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E4237/E4257/E4287
Dual Channel Per-Pin Parametric Measurement Unit
TEST AND MEASUREMENT PRODUCTS Description
E42X7 is a family of Dual Channel Parametric Measurement Units (PMU) designed for automated test equipment and instrumentation. Manufactured in a wide voltage Bi-CMOS process, it is a monolithic solution for a per-pin PMU. The E42X7 family consists of three products: E4287 * 16.25V I/O range * 4 current ranges up to 40 mA * Analog mux for providing a FLASHTM programming level * Driven guard pin E4257 * 16.25V I/O range * 4 Current ranges up to 40 mA * Small 9mm x 9mm footprint E4237 * 16.25VI/O range * 2 current ranges up to 4 mA * Low capacitance for use in relayless tester architectures Every member of the E42X7 family can drive capacitive loads of up to 300 pF with no external compensation components. A user selectable FORCE amplifier compensation switch allows users to add compensation components for stability with larger capacitive loads. Integrated voltage clamp circuitry provides a method for clamping DUT (Device Under Test) compliance voltage and protecting the DUT from damage. Each channel of the E42X7 also features an on-board window comparator that can be used to determine if a measurement value is within a user defined range for go/ no-go testing. Also included with the E42X7 are a number of integrated switches that allow the connection of a central "system" PMU to the E42X7 FORCE and SENSE pins and allow the E42X7 to provide "pull-up" or "pull-down" resistors and termination voltages for DUTs with open element outputs. The E42X7 is designed to be a low power, low cost, small footprint solution to allow high pin count testers to support a PMU per-pin.
Features
* Four Quadrant Operation (FV/MI, FV/MV, FI/MV, FI/MI) * 4 Current Ranges ( 40 A, 400 A, 4 mA, 40 mA) (E4287, E4257) * 2 Current Ranges ( 40 A and 4 mA) (E4237) * Wide Output Voltage Range - -3.25V to +13V @ RF pin across all ranges - -3.25V to 13V @ FORCE Pin (Ranges A, B, C) - -1.25V to +11V @ FORCE (Range D) * Low Power Dissipation * FV Linearity to 0.025% FSVR * Extremely Fast Settling Times offer reduced test times/increased tester thru-put. * Central PMU Switches for External PMU, -4.75 V to +14.5V, 40 mA Ranges * Switches for Pin Driver Super Voltages * Driven Guard Output (E4287) * Test Head Ground Reference * Stable with up to 300 pF Capacitive Loading with no external compensation capacitors * Switchable Compensation allows stability with up to 10 nF Capacitive Loading * 14x14 mm, 80 Pin MQFP Package (E4287) * Small, 9x9 mm, 64-Pad LPCC Package (E4237, E4257)
Applications
* Automated Test Equipment - Memory Testers - Logic Testers - Mixed Signal Testers - SOC Testers * Instrumentation
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E4237/E4257/E4287
TEST AND MEASUREMENT PRODUCTS Functional Block Diagram
VA
1K
Channel 0
VAOUT
1K 700
E4287
SELC VC
1K
VBOUT VB HiZ SELCOMP LIMIT VINP REXT (1 OF 4) (1 OF 2) RF
1K 700
HLV LLV
E4287, 4257 E4237
FORCE DUT SENSE
GUARD IVMAX IVMIN DUTNH COMPARE DUTNL EPMUF IVMON DUT GND EPMUS
E4287
Channel 1
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E4237/E4257/E4287
TEST AND MEASUREMENT PRODUCTS E4287 PIN Description
[0] refers to Channel 0, [1] refers to Channel 1
Pin Name Pin # Description
PMU
VINP[0:1] FORCE[0:1] SENSE[0:1] GUARD[0:1] DUTGND FV/FI*[0:1], MI/MV*[0:1] RS0, RS1[0:1] RF, RA, RB, RC, RD[0:1] IVMIN[0:1] IVMAX[0:1] DUTNH[0:1] DUTNL[0:1] IVMON DISMON[0:1] HLV[0:1], LLV[0:1] HIZ[0:1] COMP1[0:1], COMP2[0:1] SELCOMP[0:1] 50, 11 59, 2 58, 3 52, 9 66 37, 24 36, 25 45, 16, 46, 15 57, 4, 53, 8, 54, 7, 55, 6, 56, 5 63, 78 62, 79 42, 19 39, 22 75 35, 26 64, 77 65, 76 38, 23 51, 10 49, 12 34, 27 Analog voltage input which programs the output voltage or current of the PMU. Analog output pin which forces current or voltage. Analog input pin which senses voltage. Driven guard output. Device Under Test (DUT) ground reference input to both channels. Digital inputs which determine whether the PMU is forcing voltage or forcing current, measuring current or measuring voltage. Digital inputs which select one of the four current ranges. Pins to resistors corresponding to ranges A through D. RF common pin to the resistors. Analog input voltages which establish the lower and upper threshold level for the measurement comparator. Digital comparator outputs that indicate the DUT measurement is less than the upper threshold (not high) and greater than the lower threshold (not low). Analog voltage output that provides a real time monitor of either the measured voltage or measured current level for the selected channel. Digital input which disables IVMON output. Analog input voltage that establishes the upper voltage clamp level. Analog input voltage that establishes the lower voltage clamp level. Digital input which places the FORCE output into high impedance. Compensation pins that require an external capacitor connected between COMP1 and COMP2. Digital input selects an internal or external compensation capacitor.
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E4237/E4257/E4287
TEST AND MEASUREMENT PRODUCTS E4287 PIN Description (continued)
[0] refers to Channel 0, [1] refers to Channel 1
Pin Name External PMU EPMUF EPMUS SELIPMU[0:1] SELEPMU[0:1] Analog MUX VA[0:1] VAOUT[0:1] VB[0:1] VBOUT[0:1] VC[0:1] SELC[0:1] Power Supplies VCC[0:1] SVCC VEE[0:1] AGND VDD DGND
Pin #
Description
70 71 44, 17 43, 18
External PMU force input to both channels. External PMU sense input to both channels. Digital input that switches internal PMU to FORCE/SENSE. Digital input that switches external PMU to FORCE/SENSE.
31, 30 69, 72 32, 29 68, 73 33, 28 47, 14
Voltage A switch analog input. Voltage A output. Voltage B switch analog input. Voltage B output. Voltage C switch analog input. Digital inputs to select C switches.
60, 61, 1, 80 74 40, 41, 20, 21 67 13 48
PMU positive analog power supply. Switch positive analog power supply to both channels. Negative analog power supply. Analog ground to both channels. Positive digital power supply to both channels. Digital ground to both channels.
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E4237/E4257/E4287
TEST AND MEASUREMENT PRODUCTS E4287 PIN Description (continued)
80 Pin INT_TEP_MQFP Package (w/Internal Heat Spreader) 14mm x 14mm X 2.0mm
VBOUT[1]
VBOUT[0]
VAOUT[1]
VAOUT[0]
IVMAX[1]
IVMAX[0]
62
IVMIN[1]
IVMIN[0]
63
DUTGND
EPMUS
EPMUF
VCC[1]
80
79
78
77
76
75
74
73
72
71
70
69
68
67
66
65
64
VCC[1] FORCE[1] SENSE[1] RF[1] RD[1] RC[1] RB[1] RA[1] GUARD[1] COMP1[1] VINP[1] COMP2[1] VDD SELC[1] RS1[1] RS0[1] SELIPMU[1] SELEPMU[1] DUTNH[1] VEE[1]
61
VCC[0]
IVMON
HLV[1]
HLV[0]
LLV[1]
LLV[0]
AGND
SVCC
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
60 59 58 57 56 55 54 53
VCC[0] FORCE[0] SENSE[0] RF[0] RD[0] RC[0] RB[0] RA[0] GUARD[0] COMP1[0] VINP[0] COMP2[0] DGND SELC[0] RS1[0] RS0[0] SELIPMU[0] SELEPMU[0] DUTNH[0] VEE[0]
E4287AHF
(Top View)
52 51 50 49 48 47 46 45 44 43 42 41
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
VEE[1]
DUTNL[1]
HIZ[1]
FV/FI*[1]
DISMON[1]
SELCOMP[1]
VC[1]
VB[1]
VB[0]
VC[0]
SELCOMP[0]
DISMON[0]
FV/FI*[0]
HIZ[0]
DUTNL[0]
MI/MV*[1]
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MI/MV*[0]
VEE[0]
VA[1]
VA[0]
40
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E4237/E4257/E4287
TEST AND MEASUREMENT PRODUCTS E4257 PIN Description
[0] refers to Channel 0, [1] refers to Channel 1
Pad Name Internal PMU VINP[0:1] FORCE[0:1] SENSE[0:1] DUTGND FV/FI*[0:1] MI/MV*[0:1] RS0[0:1] RS1[0:1] RA RB, RC, RD, RF[0:1] IVMIN[0:1] IVMAX[0:1] DUTNH[0:1] DUTNL[0:1] IVMON DISMON[0:1] HLV[0:1] LLV[0:1] HIZ[0:1] COMP1[0:1], COMP2[0:1] SELCOMP[0:1] External PMU EPMUF EPMUS SELIPMU[0:1] SELEPMU[0:1] Power Supplies VCC[0:1] SVCC VEE[0:1] AGND VDD DGND Thermal Diode String VC0 VC1 24 25 Connected to Cathode of the thermal diode string. Connected to Anode of the thermal diode string. 64, 49 55 17, 32 58 38 11 PTU positive analog power supply. Switch positive analog power supply. Negative analog power supply. Analog ground. Positive digital power supply. Digital ground. 57 56 14, 35 15, 34 External PMU force input to both channels. External PMU sense input to both channels. Digital input that switches internal PMU to FORCE/SENSE. Digital input that switches external PMU to FORCE/SENSE. 9, 40 1, 48 2, 47 59 20, 29 21, 28 13, 36 12, 37 7, 6, 5, 4, 3, 42, 43, 44, 45, 46 62, 51 63, 50 16, 33 18, 31 54 22, 27 61, 52 60, 53 19, 30 8, 41 10, 39 23, 26 Analog voltage input which programs the output "FORCE" voltage or current. Analog output pin which forces current or voltage. Analog input pin which senses voltage. Device Under Test (DUT) ground reference input to both channels. Digital inputs which determine whether the PMU is forcing voltage or current. Digital inputs that select one of four current ranges. Pins to resistors corresponding to ranges A through D. RF common pin to the resistors. Analog input voltages which establish the lower and upper threshold level for the measurement comparator. Digital outputs that indicate the DUT measurement is less than the upper threshold (not high) and greater than the lower threshold (not low). Analog voltage output that provides a real time monitor of either the measured voltage or measured current level for the selected channel. Digital input which disables IVMON output. Analog voltage input that establishes the upper voltage clamp level. Analog voltage input that establishes the lower voltage clamp level. Digital input which places the FORCE output into high impedance. Compensation pins that require an external capacitor connected between COMP1 and COMP2. Digital input selects an internal or external compensation capacitor. Pad # Description
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E4237/E4257/E4287
TEST AND MEASUREMENT PRODUCTS E4257 PIN Description (continued)
64-Pad LPCC 9mmx 9mm
IVMAX[1]
IVMAX[0]
63
IVMIN[1]
IVMIN[0]
DUTGND
EPMUS
EPMUF
VCC[1]
49
50
51
52
53
54
55
56
57
58
59
60
61
62
FORCE[1] SENSE[1] RF[1] RD[1] RC[1] RB[1] RA[1] COMP1[1] VINP[1] COMP2[1] VDD RS1[1] RS0[1] SELIPMU[1] SELEPMU[1] DUTNH[1]
64
VCC[0]
IVMON
HLV[1]
HLV[0]
LLV[1]
LLV[0]
AGND
SVCC
48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33
1 2 3 4 5
FORCE[0] SENSE[0] RF[0] RD[0] RC[0] RB[0] RA[0] COMP1[0] VINP[0] COMP2[0] DGND RS1[0] RS0[0] SELIPMU[0] SELEPMU[0] DUTNH[0]
E4257ALP Bottom View
6 7 8 9
EXPOSED THERMAL PAD (Connect to VEE)
10 11 12 13 14 15 16
VEE[1] 32
DUTNL[1] 31
HIZ[1] 30
FV/FI*[1] 29
MI/MV*[1] 28
DISMON[1] 27
SELCOMP[1] 26
VC1 25
VC0 24
SELCOMP[0] 23
DISMON[0] 22
MI/MV*[0] 21
FV/FI*[0] 20
HIZ[0] 19
DUTNL[0] 18
IVMAX[0]
IVMAX[1]
50
IVMIN[0]
IVMIN[1]
DUTGND
EPMUS
EPMUF
VCC[0]
64
63
62
61
60
59
58
57
56
55
54
53
52
51
FORCE[0] SENSE[0] RF[0] RD[0] RC[0] RB[0] RA[0] COMP1[0] VINP[0] COMP2[0] DGND RS1[0] RS0[0] SELIPMU[0] SELEPMU[0] DUTNH[0]
49
VCC[1]
IVMON
HLV[0]
HLV[1]
LLV[0]
LLV[1]
AGND
SVCC
VEE[0] 17
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
48 47 46 45 44 43
FORCE[1] SENSE[1] RF[1] RD[1] RC[1] RB[1] RA[1] COMP1[1] VINP[1] COMP2[1] VDD RS1[1] RS0[1] SELIPMU[1] SELEPMU[1] DUTNH[1]
E4257ALP Top View
42 41 40 39 38 37 36 35 34 33
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
VEE[0]
DUTNL[0]
HIZ[0]
FV/FI*[0]
MI/MV*[0]
DISMON[0]
SELCOMP[0]
SELCOMP[1]
DISMON[1]
MI/MV*[1]
FV/FI*[1]
HIZ[1]
DUTNL[1]
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VEE[1]
VC0
VC1
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E4237/E4257/E4287
TEST AND MEASUREMENT PRODUCTS E4237 PIN Description
Pad Name Internal PMU VINP[0:1] FORCE[0:1] SENSE[0:1] DUTGND FV/FI*[0:1] MI/MV*[0:1] RS[0:1] RA, RC, RF[0:1] IVMIN[0:1] IVMAX[0:1] DUTNH[0:1] DUTNL[0:1] IVMON DISMON[0:1] HLV[0:1] LLV[0:1] HIZ[0:1] COMP1[0:1], COMP2[0:1] SELCOMP[0:1] External PMU EPMUF EPMUS SELIPMU[0:1] SELEPMU[0:1] Power Supplies VCC[0:1] SVCC VEE[0:1] AGND VDD DGND Thermal Diode String VC0 VC1 N/C 24 25 4, 6, 43, 45 Connected to Cathode of the thermal diode string. Connected to Anode of the thermal diode string. Not connected. 64, 49 55 17, 32 58 38 11 PTU positive analog power supply. Switch positive analog power supply. Negative analog power supply. Analog ground. Positive digital power supply. Digital ground. 57 56 14, 35 15, 34 External PMU force input to both channels. External PMU sense input to both channels. Digital input that switches internal PMU to FORCE/SENSE. Digital input that switches external PMU to FORCE/SENSE. 9, 40 1, 48 2, 47 59 20, 29 21, 28 13, 36, 12, 37 7, 5, 3, 42, 44, 46 62, 51 63, 50 16, 33 18, 31 54 22, 27 61, 52 60, 53 19, 30 8, 41 10, 39 23, 26 Analog voltage input which programs the output "FORCE" voltage or current. Analog output pin which forces current or voltage. Analog input pin which senses voltage. Device Under Test (DUT) ground reference input to both channels. Digital inputs which determine whether the PMU is forcing voltage or current. Digital inputs that select one of two current ranges (connect together externally). Pins to resistors corresponding to ranges A and C. RF common pin to the resistors. Analog input voltages which establish the lower and upper threshold level for the measurement comparator. Digital outputs that indicate the DUT measurement is less than the upper threshold (not high) and greater than the lower threshold (not low). Analog voltage output that provides a real time monitor of either the measured voltage or measured current level for the selected channel. Digital input which disables IVMON output. Analog voltage input that establishes the upper voltage clamp level. Analog voltage input that establishes the lower voltage clamp level. Digital input which places the FORCE output into high impedance. Compensation pins that require an external capacitor connected between COMP1 and COMP2. Digital input selects an internal or external compensation capacitor. Pad # Description
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E4237/E4257/E4287
TEST AND MEASUREMENT PRODUCTS E4237 PIN Description (continued)
64-Pad LPCC 9mmx 9mm
IVMAX[1] IVMAX[0]
63
IVMIN[1]
IVMIN[0]
DUTGND
EPMUS
EPMUF
VCC[1]
49
50
51
52
53
54
55
56
57
58
59
60
61
62
FORCE[1] SENSE[1] RF[1] N/C RC[1] N/C RA[1] COMP1[1] VINP[1] COMP2[1] VDD RS[1] RS[1] SELIPMU[1] SELEPMU[1] DUTNH[1]
64
VCC[0]
IVMON
HLV[1]
HLV[0]
LLV[1]
LLV[0]
AGND
SVCC
48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33
1 2 3 4 5
FORCE[0] SENSE[0] RF[0] N/C RC[0] N/C RA[0] COMP1[0] VINP[0] COMP2[0] DGND RS[0] RS[0] SELIPMU[0] SELEPMU[0] DUTNH[0]
E4237ALP Bottom View
6 7 8 9
EXPOSED THERMAL PAD (Connect to VEE)
10 11 12 13 14 15 16
VEE[1] 32
DUTNL[1] 31
HIZ[1] 30
FV/FI*[1] 29
MI/MV*[1] 28
DISMON[1] 27
SELCOMP[1] 26
VC1 25
VC0 24
SELCOMP[0] 23
DISMON[0] 22
MI/MV*[0] 21
FV/FI*[0] 20
HIZ[0] 19
DUTNL[0] 18
IVMAX[0]
IVMAX[1]
50
IVMIN[0]
IVMIN[1]
DUTGND
EPMUS
EPMUF
VCC[0]
64
63
62
61
60
59
58
57
56
55
54
53
52
51
FORCE[0] SENSE[0] RF[0] N/C RC[0] N/C RA[0] COMP1[0] VINP[0] COMP2[0] DGND RS[0] RS[0] SELIPMU[0] SELEPMU[0] DUTNH[0]
49
VCC[1]
IVMON
HLV[0]
HLV[1]
LLV[0]
LLV[1]
AGND
SVCC
VEE[0] 17
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
48 47 46 45 44 43
FORCE[1] SENSE[1] RF[1] N/C RC[1] N/C RA[1] COMP1[1] VINP[1] COMP2[1] VDD RS[1] RS[1] SELIPMU[1] SELEPMU[1] DUTNH[1]
E4237ALP Top View
42 41 40 39 38 37 36 35 34 33
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
SELCOMP[0]
SELCOMP[1]
FV/FI*[0]
MI/MV*[0]
DISMON[0]
DISMON[1]
MI/MV*[1]
DUTNL[0]
FV/FI*[1]
DUTNL[1]
VEE[0]
HIZ[0]
HIZ[1]
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VEE[1]
VC0
VC1
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E4237/E4257/E4287
TEST AND MEASUREMENT PRODUCTS Circuit Description
Circuit Overview E42X7 is a family of dual channel parametric test and measurement units, each of which can: * Force Voltage/Measure Current * Force Current/Measure Voltage * Force Voltage/Measure Voltage * Force Current/Measure Current Each PMU channel can force or measure voltage over a 16.25V range and force or measure current over four distinct ranges: E4257, E4287 40 A 400 A 4 mA 40 mA E4237 40 A 4 mA Also included with the E42X7 are a number of integrated switches that allow the device to be configured to: * Connect a central "system" PMU to the DUT through the FORCE and SENSE pins of the E42X7. * Provide a ~4.5K pull-up resistor to the programmed force voltage level, which allows devices with unipolar open-element outputs (i.e., open drain) to be tested without providing a designated pull-up or pull-down on a load board. PPMU Functionality The trapezoid in Figure 1 describes the V/I functionality of the E42X7's internal PMU when a DUT is connected to the FORCE or RF pins (a functional schematic of the E42X7 can be viewed in Figure 2).
The E42X7 also features integrated voltage clamp/overvoltage detection circuitry that provides over-voltage protection to the DUT (Device Under Test) during normal operation. Short-circuit protection circuitry protects the E42X7 by limiting the maximum output current to a specified value over the full-scale current for a particular range. The E4287 features an integrated analog MUX that is intended to be used to toggle the "driver high level" supplied to a pin electronics driver between normal logic levels and a super voltage level which is suitable for programming devices that require a "third-level" such as FLASHTM. The E4287 also features a pin (per channel), GUARD, which can be used to drive the guard traces of a FORCE/ SENSE pair. By surrounding FORCE and SENSE traces with guard traces which connect to the GUARD pin, an effective method to achieve minimal leakage can be achieved. The E42X7 also includes a test head ground (DUTGND) referencing features which allow the force voltage function to be referenced to a separate ground reference other than the ground (GND) power used for the device.
Output Voltage [V] VCC - 2V VCC - 4V
-100%
Output Current +100% [% Full-Scale Range]
VEE + 4V
VEE + 2V
FORCE Pin, Range D (E4257, E4287) FORCE Pin, Range C (E4237) RF Pin, All Ranges FORCE Pin, Ranges A,B,C (E4257, E4287)
Figure 1. PMU Functionality/Range at the FORCE and RF Pins
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E4237/E4257/E4287
TEST AND MEASUREMENT PRODUCTS Circuit Description (continued)
VA
1K
VAOUT
1K 700
SELC VC
E4287
1K
VBOUT
VB CCOMP HLV COMP1 SELCOMP HIZ COMP2
1K 700
LLV
VOLTAGE OR CURRENT LIMIT
VINP
10K
FORCEAMP
10K
FI FV FV/FI* LI LV 40 3K 1.5K
REXT (1 of 4) (E4257, E4287) (1 of 2) (E4237) RF 40 for E4257, E4287 400 for E4237 FORCE
MI/MV* 1K MI
1K
SELEPMU SELIPMU SENSE 1K 1K
DUT
MV GUARD
DISMON
E4287
1K
IVMAX DUTNH
IVMIN
DUTNL
IVMON
EPMUF DUTGND EPMUS
NOTE: Switch impedance shown for typical values.
Signals common to both PMUs
Figure 2. PMU Functionality/Range at the FORCE and RF Pins
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E4237/E4257/E4287
TEST AND MEASUREMENT PRODUCTS Circuit Description (continued)
Control Inputs All control inputs are CMOS compatible with characteristics as defined in the "Digital Inputs" section of the specification table. FV/FI* is a digital input which determines whether the PMU forces current or voltage, and MI/MV* is an Digital input which determines whether the PMU measures current or voltage. FV/FI* and MI/MV* are independent for each channel. HiZ is a digital input that is used to place the PMU's force amp into a high impedance state. Table 1 describes the modes of operation related to these three input pins.
HiZ 1 0 0 0 0 FV/FI* X 0 0 1 1 MI/MV* X 0 1 0 1 Mode of Operation High Impedance Force Current, Measure Voltage Force Current, Measure Current Force Voltage, Measure Voltage Force Voltage, Measure Current
SELCOMP is a digital input pin that is used to switch external capacitance in parallel with the E42X7's internal compensation in order to stabilize the force amplifier (see Figure 1) in situations where a large capacitive loading condition exists on the FORCE pin (such as during system calibration). SELCOMP functionality is illustrated in Table 3.
SELCOMP 0 1 Force Amplifier Compensation Internal Internal + CCOMP
Table 3.
SELIPMU is a digital input that is used to change the connectivity of the FORCE/SENSE pair of each channel such that the force amplifier's output/feedback is routed directly to the FORCE/SENSE pins or through an ~4.5K integrated pull-up resistance path. SELIPMU functionality is described in Table 4.
SELIPMU Force Amplifier Connectivity Force amplifier output can be connected to the FORCE pin through ~4.5K pull-up resistance if FV/FI*=1 and HiZ=0 (see On-Chip Termination Mode section) FORCE amplifier output connected to the FORCE pin through ~40 resistance (force amplifier amplifier controls the FORCE/SENSE node)
Table 1.
RS0 and RS1 are digital inputs to an internal analog MUX which selects an external resistor corresponding to a desired current range. The truth table for RS0 and RS1, along with the associated external resistor values and current ranges, is shown in Table 2. RS0 and RS1 are independent for each channel of the E4287 and E4257. RS0 and RS1 for each channel should be connected together externally on the E4237.
RS0 0 0 1 1 RS1 0 1 1 0 Range A B C D Current Range (Max) 40 A 400 A 4 mA 40 mA "Nominal" Ext. R RA = 12.4K RB = 1.24K RC = 124 RD = 12.4 E4257, E4287 E4257, E4287
0
1
Table 4. SELIPMU Functionality
SELEPMU is a digital input that is used to connect an external (system) PMU to FORCE/SENSE pins as may be done during calibration of the device in a typical ATE application. SELEPMU functionality is described below in Table 5.
Table 2.
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E4237/E4257/E4287
TEST AND MEASUREMENT PRODUCTS Circuit Description (continued)
SELEPMU 0 External PMU Connectivity EPMUF and EPMUS pins are disconnected from the FORCE and SENSE pins. EPMUF is connected to FORCE through ~40 of resistance, and EPMUS is connected to SENSE through ~1K of resistance.
DISMON [0] 0 1 0 [1] 0 1 1 1 0 0 MI/MV* IVMON [0] X X 1 0 X X [1] X X X X 1 0 High Impedance High Impedance (both channels cannot use IVMON at the same time) Measured Current, Channel 0 Measured Voltage, Channel 0 Measured Current, Channel 1 Measured Voltage, Channel 1
1
Table 5. SELEPMU Functionality
0
SELC is a digital input pin that is used to control the analog mux section of the E4287 and select between the normal logic level used in an application and the super voltage level so that the desired pin electronics driver levels are channeled through the E4287 to the pin driver. SELC functionality is described in Table 6.
SELC 0 1 VAOUT VA VC VBOUT VB VC
1 1
Table 7. IVMON Functionality
FORCE/RF/SENSE FORCE is an analog output pin through which a programmed voltage or current can be applied to the DUT. SENSE is a high impedance analog input that is also connected to the DUT and provides feedback for the Force amplifier (see Figure 1) in "force voltage" mode and measures DUT compliance voltage measurement in the "measure voltage" mode. RF is an analog output pin through which a programmed voltage or current can be supplied to the DUT. Since there is no disconnect switch between the FORCE amplified output and the RF pin, using the RF pin as the PMU output offers extended output voltage capability and full-scale current (note that on-chip termination mode only works when using the FORCE pin). Force Voltage (FV) Mode In the FV mode (FV/FI* = 1), the force amplifier (see Figure 2) is configured as a unity gain buffer.
Table 6. Analog Mux Functionality (E4287 only)
DISMON is a digital input pin that is used to select the desired PMU measurement channel that appears at IVMON, or to place the IVMON pin in a high impedance state. DISMON functionality is described in Table 7.
IVMON IVMON is an analog output pin which displays the measured parameter (i.e. compliance voltage or compliance current) from the channel selected using DISMON. The relationship between DISMON, MI/MV*, and the parameter displayed at IVMON is illustrated in Table 7.
VINP
+ -
Force Amp.
REXT FORCE/RF
+ -
SENSE
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TEST AND MEASUREMENT PRODUCTS Circuit Description (continued)
In FV mode, VINP is a high impedance analog input that sets the output voltage at the RF and/or FORCE output pins across their specified ranges as follows: VFORCE/RF = VVINP VVINP x specified Gain Error specified Offset Voltage specified Linearity Error
REXT Output of Force Amp Imeasured FORCE/RF
+
4X
-
Measured current can be tested with window comparator or routed to IVMON
Force Current (FI) Mode In the FI mode (FV/FI* = 0), the negative feedback to the force amplifier is provided from the output of a 4x gain instrument amplifier that senses the voltage across REXT.
VINP
In the MI mode, the voltage displayed at IVMON relates to the current measured through REXT as follows: VIVMON = Imeasured Specified Linearity Error x specified MI Gain specified Offset Current The nominal relationship between the current measured (Imeasured) and the voltage displayed at IVMON is depicted in Table 9.
Imeasured VIVMON +2V 0V - 2V
+ -
Force Amp.
REXT FORCE/RF
+
4X
-
In FI mode, VINP is a high impedance analog input that sets the output current at the RF and/or FORCE pins across their specified compliance voltage ranges as follows: IFORCE/RF = VVINP x specified FI Gain specified Offset Current specified Linearity Error The nominal relationship between VVINP and the current at the FORCE or RF pins is displayed in Table 8.
VVINP +2V 0V - 2V IFORCE/RF + Full-Scale Current 0 - Full-Scale Current
+ Full-Scale Current 0 - Full-Scale Current
Table 9. Nominal VIVMON/Imeasured Relationship
Measure Voltage (MV) Mode In the MV mode (MI/MV* = 0), DUT compliance voltage is monitored using the SENSE pin, and the resulting measurement can be tested using the on-chip window comparator, or routed to the IVMON pin.
SENSE
+ -
Table 8. Nominal Forced Current/VVINP Relationship
Measured voltage can be tested with window comparator or routed to the IVMON pin.
Measure Current (MI) Mode In the MI mode (MI/MV* = 1), the current through REXT is sensed using a 4x gain instrument amplifier, and the resulting measurement can be tested using the on-chip window comparator or routed to the IVMON pin.
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In the MV mode, the voltage monitored at SENSE maps 1:1 with the voltage measured at IVMON as follows: VIVMON = VSENSE x specified Gain specified Offset Voltage specified Linearity Error
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TEST AND MEASUREMENT PRODUCTS Circuit Description (continued)
Window Comparator The voltage clamp circuitry will constrain the DUT voltage (Vcompliance) to within a range determined by the HLV and LLV pins as follows:
+
DUTNH
IVMAX
-
To PPMU measured parameter
Vmin Vcompliance Vmax where: Vmin = VLLV specified Limit Accuracy Vmax = VHLV specified Limit Accuracy As the voltage clamp circuitry uses the FORCE pin to sense the DUT compliance voltage, applications that connect the RF pin to the DUT (see Applications Information section) must connect the FORCE pin to the RF pin for proper voltage limiting functionality. In the event of a voltage clamping condition, the DUTNL and DUTNH comparator outputs are designed to "pulldown" to logic "0" in order to indicate that the E42X7 is clamping and may be influencing any measurement that is being made (see Window Comparator section). Current Limiting The E42X7 features current limiting circuitry that limits the amount of current that the device can delivery through RF or FORCE pins. The amplitude of the short circuit current is a function of the current range selected. The maximum short-circuit current through the FORCE pin is the sum of the force amp current limit and the voltage clamp current limit if the voltage clamp is enabled and engaged. In the event that the voltage clamp is engaged, and the FORCE pin voltage exceeds the HLV or LLV pin settings by more than ~1.5V, the E42X7 will open all of the internal switches connected to the FORCE and SENSE nodes in order to protect internal PMU circuitry from damage.
+
DUTNL IVMIN
-
Each channel of the E42X7 features two comparators connected in a "window comparator" topology. These comparators can be used to provide two-bit measurement range classification for go/no-go testing of devices. IVMAX and IVMIN are high impedance analog voltage inputs that establish the upper and lower thresholds for the window comparator. DUTNH and DUTNL are LVTTL outputs that indicate where a PPMU measured parameter lies in relation to the IVMAX and IVMIN thresholds and are also used to indicate when voltage clamping is taking place during measurement as shown in Table 10.
Condition Measurement is within the range established by IVMAX and IVMIN Measurement is above the range established by IVMAX and IVMIN Measurement is below the range established by IVMAX and IVMIN V/I Limiting is engaged and having an effect on the measurement DUTNH 1 0 1 0 DUTNL 1 1 0 0
Table 10. Comparator Output Truth Table
Voltage Clamp The integrated voltage clamp circuitry is controlled using the HLV and LLV input pins. HLV and LLV are high impedance analog voltage inputs that establish the "high" and "low" clamp thresholds.
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TEST AND MEASUREMENT PRODUCTS Circuit Description (continued)
On-Chip "Termination" Mode When the E42X7 is placed in FV mode and the internal PMU is not selected (SELIPMU = 0), it can be placed in "termination" mode by setting the HiZ input to logic "0".
VINP
SENSE pin to protect it from over-voltage. The internal PMU should be disabled (HiZ=1) in order to prevent it from initiating pull-up mode. REXT Selection The E42X7 is designed for the full-scale voltage drop across REXT (RA, RB, RC, RD) to be 0.5V. Resistor values can be chosen that will enable the E42X7 to operate with full-scale current ranges other than those specified provided the voltage swing across REXT does not exceed 0.5V and the full-scale current for each range does not exceed those specified in this datasheet. Thermal Diode String The E42X7 features an internal diode string connected between the VC[0] and VC[1] pins that can be used to perform device junction temperature measurements as shown in the figure below.
+ -
Force Amp.
REXT
RF
~4.5K Typ. FORCE
When configured in this manner, the E42X7 can be used to provide an ~4.5K "pull-up" or "pull-down" resistor at the FORCE pin to the termination voltage programmed by VVINP for testing devices with unipolar "open-element" outputs (i.e. open drain).
External PMU The E42X7 features on-chip routing and switches for connecting an external PMU to the FORCE and SENSE pins of each channel. The EPMUF pin is the "External PMU Force" input and is connected to the FORCE pin through an on-chip 40, 40 mA switch. The EPMUS pin is the "External PMU Sense" input and is used to connect the external PMU's sense line to the E42X7's SENSE pin through an on-chip high impedance switch. The on-chip switches used for routing the external PMU are located in a separate on-chip well that can be sepeartely powered from the core on-chip PMU circuitry using SVCC. This allows the voltage range of the external PMU to be greater than that of the core PMU without increasing core PMU power dissipation. NOTE: When using SVCC > VCC to extend the range of the external PMU, care must be taken to ensure that the RF pin voltage does NOT exceed VCC. This can be accomplished by setting SELIPMU=0 to disconnect the RF pin from FORCE, and will also disconnect the internal sense circuitry from the
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VC[0]
100 A External Current Source
SELC = 0 Temperature Coefficient= -4.841mV/C
VC[1]
(0.813 - Tj[C] = VC[1] - VC[0] 3 0.00162
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TEST AND MEASUREMENT PRODUCTS Circuit Description (continued)
Common Mode Error/Calibration In order to attain a high degree of accuracy in a typical ATE application, offset and gain errors are accounted for through software calibration. When operating the E42X7 in the Measure Current (MI) or Force Current (FI) modes, an additional source of error, common mode error, should be accounted for. Common mode error is a measure of how the common mode voltage, VCM, at the input of the current sense amplifier affects the forced or measured current values (see Figure 3). Since this error is created by internal resistors in the current sense amplifier, it is very linear in nature. Using the common mode error and common mode linearity specifications, one can see that with a small number of calibration steps (see Applications note PMU-A1), the effect of this error can be significantly reduced.
VOS@IVMON
Power Supplies The E42X7 requires four external power supply levels to operate: - - - - VCC (Positive Analog Supply) VEE (Negative Analog Supply) SVCC (Switch Supply) VDD (Digital Supply)
CM Linearity
VCC and VEE provide power to all of the E42X7's internal analog circuitry except for the internal CMOS transmission gates used for the analog mux, external PMU switches, IVMON switches, and the "termination" mode switches. Power to these switches is provided by the SVCC supply. This allows for power savings in that the E42X7 can be used with rail voltages that are less than those that are being switched using the analog mux or external PMU switches. Note that in applications where SVCC > VCC, care must be taken to ensure that SELIPMU = 0 whenever the FORCE pin voltage exceeds VCC.
CM Error = Slope 2 mV VCM@FORCE -3.5V -2 mV 9.5V
Power Supply Sequencing In order to avoid the possibility of latch-up, the following power-up requirements must be satisfied: 1. VEE GND VDD VCC SVCC at all times 2. VEE All Analog Inputs VCC 3. GND All Digital Inputs VDD
(Note: Slope may be negative)
The following sequence can be used as a guideline when powering up the E42X7: 1. 2. 3. 4. 5. 6. VEE (substrate) SVCC VCC VDD Digital Inputs Analog Inputs
Figure 3. Graphical Representation of Common Mode Error
The three diode configuration shown in Figure 4 should be used on a once-per-board basis to prevent damage to the PMU in the event of a power supply failure and to ensure that power up requirements are not violated.
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TEST AND MEASUREMENT PRODUCTS Circuit Description (continued)
VCC
VDD 1N5820 or Equivalent Schottky Diodes
GND
VEE
Figure 4. Power Supply Protection Scheme Warning: It is extremely important that the voltage on any device pin does not exceed the range of VEE - 0.5 to VCC +0.5V at any time, either during power up, normal operation, or during power down. Failure to adhere to this requirement could result in latchup of the device, which could be destructive if the system power supplies are capable of supplying large amounts of current. Even if the device is not immediately destroyed, the cumulative damage caused by the stress of repeated latchup may affect device reliability.
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TEST AND MEASUREMENT PRODUCTS Application Information
Required External Components Per PMU
CCOMP (470 pF, Optional)
COMP1
COMP2
12.4 k
RA
1.24 k
RB
E4257, E4287
124
RC
12.4
RD
E4257, E4287
RF
VCC
VDD
VEE
0.1 F
0.1 F
0.1 F
VCC
VDD
VEE
Actual decoupling capacitor values depend on the system environment.
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TEST AND MEASUREMENT PRODUCTS Application Information (continued)
Per Pin PMU An application of the E42X7 is as a Per-Pin Parametric Measurement Unit (PPMU) in ATE as shown in the figure below. IVMON is connected to an external ADC to perform measurements for either MI or MV. Such measurements can also be used to calibrate the inputs to the comparator. Typically, IVMONs from multiple PMUs are connected to a single ADC where DISMON is used to select a PPMU. Connecting the PMU to a DUT Pin A Device Under Test (DUT) may be connected to the PPMU either `locally" or `remotely' to the pin electronics:
Local Pin Electronics:
PPMU
Pin Electronics REXT RF
DCL
FORCE Inductors
DUT Pin
SENSE
DUT Pin
F
S
4287 PPMU
IVMON
F S SYSTEM PMU
DISMON[0:1]
Remote Pin Electronics (via Relays)
Note: FORCE must be connected to RF in order to ensure voltage limiting functionality
PPMU
REXT RF DUT Pin Pin Electronics
FORCE
ADC
SENSE GUARD
F
S
SYSTEM PMU
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TEST AND MEASUREMENT PRODUCTS Application Information (continued)
Use of Switches for Super Voltage (E4287 ONLY) An application of the E42X7 switches and switch matrices is to connect their PMU and an external PMU to a DUT pin and to switch a pin electronics driver's levels to a Super Voltage as shown below. In many applications, the external PMU's range may need to exceed that of a pin's PMU (a pin's PMU range may be restricted in order to save power). For example, VEE = -5.0V, VCC = +8.25V, SVCC = +14.75V would permit a PMU range of -3.25V, +6.5V, super voltage of +12V, and an external PMU range of -4.75V, +14.5V (SELIPMU = 0).
E4287 ONLY
SYSTEM PMU
E4287
ADC
F
SELEPMU
40
S
1K
F
IVMON PPMU SELIPMU
40
S
1K
DVH SELC DVHH
1K
1000 pF
1K 1K
PIN'S DRIVER
DUT PIN
DVL
1K
1000 pF
OUTPUT WAVEFORM:
DVHH (Super Voltage) DVH NOTE: Switch impedance is shown for typical value DVL
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TEST AND MEASUREMENT PRODUCTS E4287 Package Information
E42X7 Package: 14 x 14 x 2.0 mm, 80 Pin, Int_TEP_MQFP (with Internal Heat Spreader)
PIN Descriptions
12
D D1 N
A
1
e
12
-A- -B- E1 E
DIMS. A A1 A2
-D-
TOL. MAX 2.35 0.25 Max +.10/-.05 .25 .10 .25 .10 +.15/-.10 BASIC .05 2.00 16.00 14.00 16.00 14.00 .88 .65 .30 0 - 7 MAX MAX .12 .10
D D1 E
.20 RAD. TYP .
E1 L
20 RAD. TYP .
e b
STANDOFF
6 4
A
A1
.25
A2
SEATING PLANE
ddd ccc
.17 MAX
L
b
ddd M C A-B S D S
-C-
LEAD COMPLANARITY
ccc C
NOTES: 1) All dimensions in mm. 2) Dimensions shown are nominal with tol. as indicated. 3) L/F: EFTEC 64T copper or equivalent, 0.127 mm (.005") or 0.15 mm (.006") THICK. 4) Foot length "L" is measured at gage plane at 0.25 above the seating plane.
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TEST AND MEASUREMENT PRODUCTS E4237, E4257 Package Information
64-Pad LPCC Package 9mm x 9mm
TOP VIEW
D
INDEX AREA (D/2 x E/2)
A
D/2
B
E/2
E
2x
aaa C
2x
aaa C
BOTTOM VIEW
D2
NxK (DATUM B)
D2/2
8
NxL
(DATUM A)
E2/2
E2
DETAIL B N PIN 1 (ND-1) x e
N-1
e
b
5
bbb M C A B
6
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TEST AND MEASUREMENT PRODUCTS E4237, E4257 Package Information (continued)
Detail B
// ccc C
SEATING PLANE
8
0.08 C
A
A3
A1
C
SIDE VIEW
Ref. A A1 A3
MIN 0.80 0
NOM 0.90 0.02 0.20 Ref.
MAX 1.00 0.05
(DATUM A OR B)
L
5 L1
NOTE 5 IS OPTIONAL
b
e/2 e
TERMINAL TIP
0.18 8.90 7.50 8.90 7.50
0.25 9.00 7.65 9.00 7.65 0.50 BSC.
0.30 9.10 7.80 9.10 7.80
D
5
D2 E E2 e k
TERMINAL/SIDE
0.20 b/2 0.35
- - 0.40 64 16 16
- - 0.45
x
NOTES: 1) Dimensioning and tolerancing conform to ASME Y14.5M-1994. 2) All dimensions are in millimeters. Angles are in degrees. 3) N is the total number of terminals. 4) The terminal #1 identifier and terminal numbering convention shall conform to JESD 95-1 SPP-012. Details of terminal #1 identifier are optional, but must be located within the zone indicated. The terminal #1 identifier may be either a mold or marked feature. 5) Dimension b applies to metallized terminal and is measured between 0.25mm and 0.30mm from terminal tip. Dimension L1 is the terminal pull back from package E up to 0.1mm is acceptable. L1 is optional. 6) ND and NE refer to the number of terminals on each D and E side respectively. 7) Depopulation is possible in a symmetrical fashion. 8) Bilateral coplanarity zone applies to exposed heat slug (if any) as well as the terminals.
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L N ND NE
TOLERANCES OF FORM AND POSITION aaa bbb ccc 0.15 0.10 0.10
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TEST AND MEASUREMENT PRODUCTS Recommended Operating Conditions
Parameter Positive Analog Power Supply (relative to GND) Negative Analog Power Supply (relative to GND) Total Analog Power Supply Positive Analog Switch Power Supply Digital Power Supply (relative to GND) Junction Temperature Thermal Resistance of Package (Junction to Case) E4287 Junction to Top of Package E4237, E4257 Junction to Top of Package E4237 , E4257 Junction to Exposed Heat Slug (Bottom, Center) Symbol VCC VEE (S)VCC - VEE SVCC VDD Tj JC 5 12.7 0.4 C/W C/W C/W Min 8 -5.25 12.75 VCC 3.0 25 3.3 Typ 10 -5 15 Max 15 -4.75 20.25 15 3.6 85 Units V V V V V C
Absolute Maximum Ratings
Parameter Positive Power Supply (relative to GND) Negative Power Supply (relative to GND) Total Power Supply Digital Power Supply (relative to GND) Digital Inputs Analog Inputs Upper/Lower Voltage Limit Input to FORCE Pin Difference Storage Temperature Junction Temperature Soldering Temperature Symbol VCC, SVCC VEE (S)VCC - VEE VDD DI AI |HLV, LLV - VFORCE| TS TJ TSOL -6.5 -0.5 -0.5 -0.5 VEE - .5 0 -55 -65 22.5 4.5 VDD + 0.5 VCC + .5 17 +125 +125 260 Min Typ Max 16 Units V V V V V V V C C C
Stresses above listed under "Absolute Maximum Ratings" may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions above those "recommended" in the operational sections of this specification is not implied. Exposure to conditions above those "recommended" for extended periods may affect device reliability.
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TEST AND MEASUREMENT PRODUCTS DC Characteristics
Power Supplies
Parameter Total Chip Power Supply Consumption (Quiescent, No-Load) Positive Supply Current (VCC) Negative Supply Current (VEE) Digital Supply Current (VDD) Positive Switch Supply Current (SVCC) Power Supply Rejection Ratio (see plot below for AC PSRR) FV/MI Mode FORCE Pin (DC) IVMON Pin (DC) FI/MV Mode FORCE Pin (DC) IVMON Pin (DC) FV/MI PSRR 70 70 FI/MV PSRR 70 70 dB dB dB dB Symbol Min Typ Max Units
ICC IEE IDD SICC
-25
10 -10
25 3.5 1
mA mA mA mA
50
Force Pin, FI/MV Mode
40
PSRR [dB]
30
20
Force Pin, FV/MI Mode
10
IVMON Pin, FV/MI and FI/MV Modes
100
500 Noise Frequency [kHz]
1000
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TEST AND MEASUREMENT PRODUCTS DC Characteristics (continued)
Force Voltage
Parameter Input Voltage Range @ VINP Input Leakage Current Output Forcing Voltage RF Pin (Full-Scale Current) FORCE Pin (E4257, E4287) Ranges A, B, C (Full-Scale Current) Range D Sourcing Full-Scale Current Zero Current Sinking Full-Scale Current FORCE Pin (E4237) Range A (Full-Scale Current) Range C Sourcing Full-Scale Current Zero Current Sinking Full-Scale Current Force Amplifier Short Circuit Current Limit Range A Range B Range C Range D Voltage Accuracy Offset Gain Linearity Temperature Dependence (Note 1) Temperature Coefficient of Offset Temperature Coefficient of Gain Capacitive Loading Range at FORCE SELCOMP = 0 SELCOMP = 1, CCOMP = 470 pF Vos FV Gain FV INL Vos/T FVGain/T CLOAD 0 0 300 10 pF nF ISC, ISK 0.5 0.8 9 45 -50 0.985 -0.01 17 1 1.6 15 45 160 50 1.015 +0.01 mA mA mA mA mV V/V %FSVR V/C ppm/C Symbol VVINP IVINP VRF VFORCE VEE + 2 VEE + 2 VEE + 2 VEE + 4 VEE + 2 VEE + 2 VEE + 2 VEE + 4 VCC - 2 VCC - 4 VCC - 2 VCC - 2 VCC - 2 VCC - 4 VCC - 2 VCC - 2 V V V V V V V V Min VEE + 1.75 -200 VEE + 2 0 Typ Max VCC - 1.75 +200 VCC - 2 Units V nA V
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TEST AND MEASUREMENT PRODUCTS DC Characteristics (continued)
Measure Current
Parameter Current Measurement Range Range A Range B (E4257, E4287) Range C Range D (E4257, E4287) Current Measurement Accuracy Measure Current Offset Gain (Note 5) Linearity Common Mode Error (Note 2) Common Mode Linearity Temperature Dependence (Note 1) Temperature Coefficient of Offset Temperature Coefficient of Gain Ranges A, B, C Range D Symbol IMEASURE -40 -400 -4 -40 VOS MI Gain MI INL CM Error CM Error Vos/T MI Gain/T -100 3.91 -0.05 -5.5 -.05 60 30 360 40 400 4 40 100 4.15 0.05 5.5 0.05 A A mA mA mV V/V % FSCR mV/V %FSCR ppm/C ppm/C ppm/C Min Typ Max Units
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TEST AND MEASUREMENT PRODUCTS DC Characteristics (continued)
Force Current
Parameter Input Voltage Range @ VINP Input Leakage Current Output Forcing Current Range A Range B (E4257, E4287) Range C Range D (E4257, E4287) Compliance Voltage Range RF Pin ( Full-Scale Current) FORCE Pin (E4257, E4287) Ranges A, B, C (Full-Scale Current) Range D Sourcing Full-Scale Current Zero Current Sinking Full-Scale Current FORCE Pin (E4237) Range A (Full-Scale Current) Range C Sourcing Full-Scale Current Zero Current Sinking Full-Scale Current Current Accuracy Offset Gain (Note 4) Ranges A, B, C Range D Linearity Range A Ranges B, C, D (Spec at 0.05% FSCR) Common Mode Error Common Mode Linearity Temperature Dependence (Note 1) Temperature Coefficient of Offset Temperature Coefficient of Gain Ranges A, B, C Range D Capacitive Loading Range at FORCE SELCOMP = 0 SELCOMP = 1, CCOMP = 470 pF Ios FI Gain Symbol VVINP IIVIN IFORCE -40 -400 -4 -40 VRF VFORCE VEE + 2 VEE + 2 VEE + 2 VEE + 2 VEE + 4 VEE + 2 40 400 4 40 VCC - 2 VCC - 2 VCC - 4 VCC - 2 VCC - 2 VCC - 2 A A mA mA V V V V V V Min -2.5 -200 0 Typ Max 2.5 +200 Units V nA
VEE + 2 VEE + 2 VEE + 4 -5 0.241 0.234 FI INL -0.07 -0.05 CM Error CM Error Ios/T FI Gain/T -0.15 -.05 15 2 20 CLOAD 0 0
VCC - 4 VCC - 2 VCC - 2 5 0.256 0.256 0.05 0.05 0.15 0.05
V V V % FSR V/V V/V %FSCR %FSCR %FSCR/V %FSCR ppm/C ppm/C ppm/C
300 10
pF nF
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TEST AND MEASUREMENT PRODUCTS DC Characteristics (continued)
Measure Voltage
Parameter Voltage Measurement Range Voltage Measurement Accuracy Measure Voltage Offset Gain Linearity Temperature Dependence (Note 1) Temperature Coefficient of Offset Temperature Coefficient of Gain Symbol VSENSE Vos MV Gain MV INL Vos/T MV Gain/T Min VEE + 2 -50 .985 -0.01 10 1 Typ Max VCC - 2 50 1.015 +0.01 Units V mV V/V %FSVR V/C ppm/C
Digital Inputs (FV/FI, MI/MV, RS0, RS1, SELIPMU, SELEPMU, SELC, SELCOMP, HiZ, DISMON)
Parameter Input Low Level Input High Level Input Leakage Current Symbol VIL VIH IIN 2.4 -200 +200 Min Typ Max 0.8 Units V V nA
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TEST AND MEASUREMENT PRODUCTS DC Characteristics (continued)
Force & Sense Switches
Parameter Internal Force Switches On-Resistance E4257, E4287 E4237 External Force Switches Usable Input Voltage Range @ EPMUF Usable Input Current Range @ EPMUF On-resistance Leakage Current @ EPMUF Switch Open (SELEPMU = 0) Switch Closed (SELEPMU = 1) Input Capacitance SELEPMU = 1) External Sense Switches Usable Input Voltage Range @ EPMUS Usable Input Current Range @ EPMUS On-resistance Leakage Current Switch Open (SELEPMU = 0) Switch Closed (SELEPMU = 1) HiZ (Switches Open) Leakage Current (Note 3) @ FORCE = VEE + 2V to VCC - 2V @ RF = VEE + 2V to VCC - 2V @ SENSE = VEE + 2V to VCC -2V FORCE Pin Capacitance (Note 3) SELIPMU = SELEPMU = 0 (E4257, E4287) SELIPMU = SELEPMU = 0 (E4237) SELIPMU = 1, SELEPMU = 0 (E4257, E4287) SELIPMU = 1, SELEPMU = 0 (E4237) SENSE Pin Capacitance (Note 3) Internal Pull-Up Current Capability Internal Pull-Up Resistance (Switch & Resistor) Symbol RONRF_FORCE 40 400 VEPMUF IEPMUF RONEPMUF Ileak Ileak EPMUF VEPMUS IEPMUS RONEPMUS Ileak Ileak Ileak -10 -10 -10 CFORCE 0 0 0 0 CSENSE IRPU RPU 0 -6 2.5 4.5 35 13 110 20 110 110 3 6 6 pF pF pF pF pF mA k 10 10 10 nA nA nA VEE -40 40 -10 -10 120 VEE -4 1 -10 -10 SVCC 4 1.8 10 10 50 500 SVCC 40 50 10 10 Min Typ Max Units
V mA nA nA pF V mA k nA nA
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TEST AND MEASUREMENT PRODUCTS DC Characteristics (continued)
Voltage Clamp
Parameter Upper Voltage Limit Input Range Lower Voltage Limit Input Range (Note 6) Upper/Lower Voltage Limit Input to FORCE Pin Difference Upper/Lower Voltage Limit Input Current Voltage Limiting Accuracy Upper Voltage Limit (HLV) Lower Voltage Limit (LLV) Voltage clamp Current Limiting FORCE Pin Short Circuit Protection Threshold HLV LLV IHLV, ILLV VLIMIT+ VLIMIT- |ICLAMP| Vprotect HLV + 0.5 LLV - 2.5 HLV + 2.5 LLV - 0.5 V V -200 HLV - 0.325 LLV - 0.325 42 +200 HLV + 0.325 LLV + 0.325 150 nA V V mA Symbol HLV LLV |HLV, LLV - VFORCE| Min LLV + 1.0 VEE + 1.675 0 Typ Max VCC - 1.675 VCC - 6 16.5 Units V V V
Analog MUX (E4287 ONLY)
Parameter Usable Input Voltage Range (VA, VB, VC) MUX ""Super Voltage"" Input Channel 0 to Channel 1 Difference Switch On-Resistance @ 500 A On-Resistance Variability (Across full VEE to SVCC Range) Leakage Current Symbol Vin VVC[0] - VVC[1] RON_MUX RON_MUX ILEAK-MUX Min VEE -1.5 1300 Typ Max SVCC SVCC 2000 500 100 Units V V nA
IVMON
Parameter Leakage (both IVMON switches open) IVMON Output Switch Impedance IVMON Output Current Capability IVMON Output Capacitance (both IVMON switches open) Symbol ILEAK_IVMON RIVMONSW IIVMON CIVMON Min -20 0.3 -4 0 Typ Max +20 1.2 4 5 Units nA k mA pF
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TEST AND MEASUREMENT PRODUCTS DC Characteristics (continued)
Comparator
Parameter IVMAX Voltage Range IVMIN Voltage Range Comparator Offset (IVMIN, IVMAX) Input Bias Current at IVMIN, IVMAX Symbol IVMAX IVMIN Vos Ibias Min VEE + 1.75 VEE + 1.75 -100 -200 Typ Max VCC - 1.75 VCC - 1.75 +100 +200 Units V V mV nA
DUTNL, DUTNH
Parameter Output Low Level (DUTNH (L)) @ |IOL| = 1.6 mA Output High Level (DUTNH (L)) @ | IOH| = 400 A Symbol VOL Min Typ Max 400 Units mV
VOH
2.4
V
Test Head Remote Ground
Parameter DUTGND Voltage Range (referenced to GND) DUTGND Leakage Current Symbol DUTGND Ileak Min -250 -200 Typ Max 250 +200 Units mV nA
Driven Guard (E4287 ONLY)
Parameter GUARD - SENSE @ DUTGND = 0V, VSENSE = 5V Symbol VDIFF Min -100 Typ Max 100 Units mV
DC Characteristic specifications are guaranteed over full Recommended Operating Condition ranges unless otherwise noted. Note 1: Note 2: Note 3: Note 4: Temperature coefficients are valid over a 25C to 85C junction temperature range unless otherwise noted. The mV/V units shown are derived as follows: (offset current * range resistance) / output force voltage. SELIPMU = SELEPMU = FV/FI = 0. Unit Definitions: FI Gain =(IFORCE x REXT) VVINP FSVR = Full-Scale Voltage Range MI Gain = VIVMON (IFORCE x REXT)
FORCE Pin: FSVR = 16.25V (max supplies) @ Zero Current FSVR = 12.25V (max supplies) @ Full-Scale Current RF Pin: FSVR = 16.25V (max supplies) Across Entire Current Range FSCR = Full-Scale Current Range Range A: Range B: Range C: Range D: 80 A 800 A 8 mA 80 mA
Note 5: Note 6:
VCC - 6V is the maximum LLV voltage that will clamp full-scale current on Range D. LLV will clamp full-scale current for ranges A, B, and C all the way up to HLV - 1V.
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TEST AND MEASUREMENT PRODUCTS AC Characteristics
Force Voltage/Measure Current
Parameter Force Output Voltage Settling Time (Note 2) CFORCE/SENSE = 100 pF, SELCOMP = 0 To 0.025% FSVR Range A Range B (E4257, E4287) Range C Range D (E4257, E4287) To 0.1% FSVR Range A Range B (E4257, E4287) Range C Range D (E4257, E4287) CFORCE/SENSE = 1,000 pF, SELCOMP = 1, CCOMP = 470 pF To 0.025% FSVR Range A Range B (E4257, E4287) Range C Range D (E4257, E4287) To 0.1% FSVR Range A Range B (E4257, E4287) Range C Range D (E4257, E4287) Measure Current Settling Time (Note 4) CFORCE/SENSE = 100 pF, SELCOMP = 0 To 0.05% FSCR Range A Range B (E4257, E4287) Range C Range D (E4257, E4287) To 0.1% FSCR Range A Range B (E4257, E4287) Range C Range D (E4257, E4287) CFORCE/SENSE = 1,000 pF, SELCOMP = 1, CCOMP = 470 pF To 0.05% FSCR Range A Range B (E4257, E4287) Range C Range D (E4257, E4287) To 0.1% FSCR Range A Range B (E4257, E4287) Range C Range D (E4257, E4287) MItsettle Symbol FVtsettle Min Typ Max Units
25 25 25 15 17 17 17 10
105 95 85 75 95 85 75 65
s s s s s s s s
115 35 30 30 75 25 20 20
200 120 110 100 130 110 100 90
s s s s s s s s
105 40 30 40 75 35 25 30
550 195 150 100 200 125 100 75
s s s s s s s s
230 50 40 45 200 40 30 40
420 200 175 150 270 150 125 100
s s s s s s s s
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TEST AND MEASUREMENT PRODUCTS AC Characteristics (continued)
Force Voltage/Measure Current (continued)
Parameter Force Amplifier Slew Rate I/V Monitor (Note 3) DISABLE True to VMON Disable Time DISABLE False to IVMON Enable Time Slew Rate Voltage Clamp Activation Time (Note 5) Recovery Time (Note 5) Overshoot Force Amp HiZ True to FORCE Disable Time (Note 3) HiZ False to FORCE Enable Time (Note 3) Symbol SR tz toe V/t tA tR Vovershoot tz toe Min 0.9 Typ 1 750 1.5 6.7 6 6 0.5 10 45 Max Units V/s ns s V/s s s V s s
5
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TEST AND MEASUREMENT PRODUCTS AC Characteristics (continued)
Force Current/Measure Voltage
Parameter Force Output Current Settling Time (Note 2) CFORCE/SENSE = 100 pF, SELCOMP = 0 To 0.05% FSCR Range A Range B (E4257, E4287) Range C Range D (E4257, E4287) To 0.1% FSCR Range A Range B (E4257, E4287) Range C Range D (E4257, E4287) CFORCE/SENSE = 1,000 pF, SELCOMP = 1, CCOMP = 470 pF To 0.05% FSCR Range A Range B (E4257, E4287) Range C Range D (E4257, E4287) To 0.1% FSCR Range A Range B (E4257, E4287) Range C Range D (E4257, E4287) Measure Voltage Settling Time (Note 4) CFORCE/SENSE = 100 pF, SELCOMP = 0 To 0.025% FSVR Range A Range B (E4257, E4287) Range C Range D (E4257, E4287) To 0.1% FSVR Range A Range B (E4257, E4287) Range C Range D (E4257, E4287) CFORCE/SENSE = 1,000 pF, SELCOMP = 1, CCOMP = 470 pF To 0.025% FSVR Range A Range B (E4257, E4287) Range C Range D (E4257, E4287) To 0.1% FSVR Range A Range B (E4257, E4287) Range C Range D (E4257, E4287) MVtsettle Symbol FItsettle Min Typ Max Units
320 45 30 30 270 35 25 20
575 185 135 85 450 175 125 75
s s s s s s s s
540 70 30 40 490 60 25 30
700 250 200 150 650 200 150 95
s s s s s s s s
270 40 22 20 205 25 15 10
425 175 70 60 350 100 60 50
s s s s s s s s
490 60 25 30 400 45 15 20
620 195 80 70 510 175 70 60
s s s s s s s s
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TEST AND MEASUREMENT PRODUCTS AC Characteristics (continued)
Force Current/Measure Voltage (continued)
Parameter Force Amplifier Slew Rate I/V Monitor (Note 3) DISABLE True to VMON Disable Time DISABLE False to IVMON Enable Time Slew Rate Voltage Clamp Activation Time (Note 5) Recovery Time (Note 5) Overshoot Force Amp HiZ True to FORCE Disable Time (Note 3) HiZ False to FORCE Enable Time (Note 3) Symbol SR tz toe V/t tA tR Vovershoot tz toe Min 0.9 Typ 1 750 1.5 6.7 6 6 0.5 10 45 Max Units V/s ns s V/s s s V s s
5
Comparator
Parameter Propagation Delay (Note 6) >3V Swing Minimum Pulse Width (3V swing, IVMAX/IVMIN set to 50%) Maximum Toggle Rate Symbol tpd(+), (-) Min Typ Max Units
2 166
s kHz
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TEST AND MEASUREMENT PRODUCTS AC Characteristics (continued)
Note 1: Note 2: Note 3: Settling times are not production tested. Guaranteed by characterization. Measured from full-scale step at VINP to FORCE output. Test Conditions: 1. 15 pF load on output 2. input signal has 5 ns rise/fall time 3. tpd is defined as the difference between the time when the input crosses 1.5V to when the output changes 10% (of the total change) from the initial voltage level. (see timing diagram below).
10% 100%
Output
100% 10%
tpd1
2V
tpd2
Input
1.5V 0.8V 1.5V
Note 4: Note 5: Note 6:
Measured from full-scale step at VINP to IVMON output. Clamp activation/recovery time indicates the delay between when the clamps are actually engaged or disengaged and when clamping is indicated with the comparator outputs. Comparator Propagation Delay Measurements. HiZ=1, MI/MV*=0, SELIPMU=1, input signal applied to FORCE/SENSE.
VFORCE/SENSE SR = 1V/s IVMIN, IVMAX
100% 50% 0%
Tpd(+) Tpd(-)
DUTNH DUTNL
Unit Definitions: FSVR = Full-Scale Voltage Range FORCE Pin: FSVR = 16.25V (max supplies) @ Zero Current FSVR = 12.25V (max supplies) @ Full-Scale Current RF Pin: FSVR = 16.25V (max supplies) Across Entire Current Range FSCR = Full-Scale Current Range Range A: Range B: Range C: Range D:
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80 A 800 A 8 mA 80 mA
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TEST AND MEASUREMENT PRODUCTS Ordering Information
Model Number E4287AHFT
Package 14 x 14 x 2.0 mm, 80 Pin, Int_TEP_MQFP (with Internal Heat Spreader) Edge4287 Evaluation Module
EVM4287AHFT
Model Number E4237ALPT E4237ALPT-T EVM4237ALPT
Package 9mm x 9mm, 64-Pad, LPCC 9mm x 9mm 64-Pad, LPCC (Tape & Reel) Edge4237 Evaluation Module
Model Number E4257ALPT E4257ALPT-T EVM4257ALPT
Package 9mm x 9mm, 64-Pad, LPCC 9mm x 9mm 64-Pad, LPCC (Tape & Reel) Edge4257 Evaluation Module
P b
This product is lead-free.
Contact Infor mation
Semtech Corporation Test and Measurement Division 10021 Willow Creek Rd., San Diego, CA 92131 Phone: (858)695-1808 FAX (858)695-2633
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