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DG406/407
Vishay Siliconix
16-Ch/Dual 8-Ch High-Performance CMOS Analog Multiplexers
DESCRIPTION
The DG406 is a 16-channel single-ended analog multiplexer designed to connect one of sixteen inputs to a common output as determined by a 4-bit binary address. The DG407 selects one of eight differential inputs to a common differential output. Break-before-make switching action protects against momentary shorting of inputs. An on channel conducts current equally well in both directions. In the off state each channel blocks voltages up to the power supply rails. An enable (EN) function allows the user to reset the multiplexer/demultiplexer to all switches off for stacking several devices. All control inputs, address (Ax) and enable (EN) are TTL compatible over the full specified operating temperature range. Applications for the DG406/407 include high speed data acquisition, audio signal switching and routing, ATE systems, and avionics. High performance and low power dissipation make them ideal for battery operated and remote instrumentation applications. For additional application information order Faxback document numbers 70601 and 70604. Designed in the 44 V silicon-gate CMOS process, the absolute maximum voltage rating is extended to 44 volts, allowing operation with 20 V supplies. Additionally single (12 V) supply operation is allowed. An epitaxial layer prevents latchup. For applications information please request FaxBack documents 70601 and 70604.
FEATURES
* * * * * * Low On-Resistance - rDS(on): 50 Low Charge Injection - Q: 15 pC Fast Transition Time - tTRANS: 200 ns Low Power: 0.2 mW Single Supply Capability 44 V Supply Max Rating
Pb-free Available
RoHS*
COMPLIANT
BENEFITS
* * * * * * Higher Accuracy Reduced Glitching Improved Data Throughput Reduced Power Consumption Increased Ruggedness Wide Supply Ranges: 5 V to 20 V
APPLICATIONS
* * * * * * * Data Acquisition Systems Audio Signal Routing Medical Instrumentation ATE Systems Battery Powered Systems High-Rel Systems Single Supply Systems
FUNCTIONAL BLOCK DIAGRAM AND PIN CONFIGURATION
DG406 Dual-In-Line and SOIC Wide-Body
V+ NC NC S16 S15 S14 S13 S12 S11 S10 S9 GND NC A3 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Top View Decoders/Drivers 28 27 26 25 24 23 22 21 20 19 18 17 16 15 D VS8 S7 S6 S5 S4 S3 S2 S1 EN A0 A1 A2
DG407
V+ Db NC S8b S7b S6b S5b S4b S3b S2b S1b GND NC NC
Dual-In-Line and SOIC Wide-Body
1 2 3 4 5 6 7 8 9 10 11 12 13 14 Top View Decoders/Drivers 2 28 27 26 25 24 23 22 21 20 19 18 17 16 15 Da VS8a S7a S6a S5a S4a S3a S2a S1a EN A0 A1 A2
* Pb containing terminations are not RoHS compliant, exemptions may apply Document Number: 70061 S-71009-Rev. I, 14-May-07 www.vishay.com 1
DG406/407
Vishay Siliconix
FUNCTIONAL BLOCK DIAGRAM AND PIN CONFIGURATION
DG406
S 16
PLCC and LCC
NC NC S8 V+ VD
DG407
S 8b
PLCC and LCC
S 8a Db Da NC V+ V-
4
3
2
1
28 27 26
4
3
2
1
28 27 26
S15 S14 S13 S12 S11 S10 S9
5 6 7 8 9 10 11 Decoders/Drivers 12 13 14 15 16 17 18 A3 A2 A1 A0 GND NC EN
25 24 23 22 21 20 19
S7 S6 S5 S4 S3 S2 S1
S7b S6b S5b S4b S3b S2b S1b
5 6 7 8 9 10 11 Decoders/Drivers 12 13 14 15 16 17 18 A2 A1 A0 GND NC NC EN
25 24 23 22 21 20 19
S7a S6a S5a S4a S3a S2a S1a
Top View
Top View
TRUTH TABLE - DG406
A3 X 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 A2 X 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 A1 X 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 A0 X 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 EN 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 On Switch None 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
TRUTH TABLE - DG407
A2 X 0 0 0 0 1 1 1 1 A1 X 0 0 1 1 0 0 1 1 A0 X 0 1 0 1 0 1 0 1 EN 0 1 1 1 1 1 1 1 1 On Switch Pair None 1 2 3 4 5 6 7 8
Logic "0" = VAL 0.8 V Logic "1" = VAH 2.4 V X = Do not Care
ORDERING INFORMATION - DG406
Temp Range Package 28-Pin Plastic DIP - 40 to 85 C 28-Pin PLCC 28-Pin Widebody SOIC Part Number DG406DJ DG406DJ-E3 DG406DN DG406DN-T1-E3 DG406DW DG406DW-E3
ORDERING INFORMATION - DG407
Temp Range Package 28-Pin Plastic DIP - 40 to 85 C 28-Pin PLCC 28-Pin Widebody SOIC Part Number DG407DJ DG407DJ-E3 DG407DN DG407DN-T1-E3 DG407DW DG407DW-E3
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Document Number: 70061 S-71009-Rev. I, 14-May-07
DG406/407
Vishay Siliconix
ABSOLUTE MAXIMUM RATINGS
Parameter Voltages Referenced to VDigital Inputsa, VS, VD Current (Any Terminal) Peak Current, S or D (Pulsed at 1 ms, 10 % Duty Cycle Max) Storage Temperature (AK, AZ Suffix) (DJ, DN Suffix) 28-Pin Plastic DIPb 28-Pin CerDIPd Power Dissipation (Package)b 28-Pin Plastic PLCCc LCC-28e 28-Pin Widebody SOIC V+ GND Limit 44 25 (V-) - 2 V to (V+) + 2 V or 20 mA, whichever occurs first 30 100 - 65 to 150 - 65 to 125 625 1.2 450 1.35 450 Unit
V
mA C mW W mW W mW
Notes: a. Signals on SX, DX or INX exceeding V+ or V- will be clamped by internal diodes. Limit forward diode current to maximum current ratings. b. All leads soldered or welded to PC board. c. Derate 6 mW/C above 75C. d. Derate 12 mW/C above 75C. e. Derate 13.5 mW/C above 75C .
Document Number: 70061 S-71009-Rev. I, 14-May-07
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DG406/407
Vishay Siliconix
SPECIFICATIONSa
Test Conditions Unless Otherwise Specified V+ = 15 V, V- = - 15 V Parameter Analog Switch Analog Signal Rangee Drain-Source On-Resistance rDS(on) Matching Between Channelsg Source Off Leakage Current Symbol VANALOG rDS(on) rDS(on) IS(off) VEN = 0 V VD = 10 V VS = 10 V DG406 DG407 VS = VD = 10 Sequence Each Switch On DG406 DG407 VD = 10 V, IS = - 10 mA Sequence Each Switch On VD = 10 V VAL = 0.8 V, VAH = 2.4 Vf Tempb Full Room Full Room Room Full Room Full Room Full Room Full Room Full Full Full VA = 2.4 V, 15 V VEN = 0 V, 2.4 V, VA = 0 V f = 1 MHz Full Full Room Room Full Room Full Room Full Room Full Room Room Room Room DG407 DG406 DG407 Room Room Room Room Full Room Full Room Full Room Full 7 200 50 150 70 15 - 69 8 130 65 140 70 13 - 0.01 50 - 0.01 - 20 - 20 -1 - 10 500 900 - 20 - 20 30 75 -1 - 10 500 700 30 75 A pF 25 10 200 400 150 300 350 450 25 10 200 400 150 300 350 450 ns -1 -1 50 5 0.01 0.04 0.04 0.04 0.04 - 0.5 - 50 -1 - 200 -1 - 100 -1 - 200 -1 - 100 2.4 0.8 1 1 -1 -1 0.5 50 1 200 1 100 1 200 1 100 - 0.5 -5 -1 - 40 -1 - 20 -1 - 40 -1 - 20 2.4 0.8 1 1 0.5 5 1 40 1 20 1 40 1 20 Typc A Suffix - 55 to 125 C Mind - 15 Maxd 15 100 125 D Suffix - 40 to 85 C Mind - 15 Maxd 15 100 125 Unit V %
Drain Off Leakage Current
ID(off)
nA
Drain On Leakage Current Digital Control Logic High Input Voltage Logic Low Input Voltage Logic High Input Current Logic Low Input Current Logic Input Capacitance Dynamic Characteristics Transition Time Break-Before-Make Interval Enable Turn-On Time Enable Turn-Off Time Charge Injection Off Isolationh Source Off Capacitance Drain Off Capacitance Drain On Capacitance Power Supplies Positive Supply Current Negative Supply Current Positive Supply Current Negative Supply Current
ID(on)
VINH VINL IAH IAL Cin tTRANS tOPEN tON(EN) See Figure 3 tOFF(EN) Q OIRR CS(off) CD(off) CD(on) VS = 0 V, CL = 1 nF, RS = 0 VEN = 0 V, RL = 1 k f = 100 kHz VEN = 0 V, VS = 0 V, f = 1 MHz VEN = 0 V VD = 0 V f = 1 MHz
V A pF
See Figure 2 See Figure 4
pC dB
I+ VEN = VA = 0 or 5 V II+ VEN = 2.4 V, VA = 0 V I-
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Document Number: 70061 S-71009-Rev. I, 14-May-07
DG406/407
Vishay Siliconix
SPECIFICATIONSa (FOR SINGLE SUPPLY)
Test Conditions Unless Otherwise Specified V+ = 12 V, V- = 0 V Parameter Analog Switch Analog Signal Rangee Drain-Source On-Resistance Source Off Leakage Current Drain Off Leakage Current Symbol VANALOG rDS(on) VD = 3 V, 10 V, IS = - 1 mA Sequence Each Switch On VEN = 0 V VD = 10 V or 0.5 V VS = 0.5 V or 10 V VS = VD = 10 Sequence Each Switch On VAL = 0.8 V, VAH = 2.4 Vf Tempb Full Room Room Room DG406 DG407 DG406 DG407 Room Room Room Room 90 5 0.01 0.04 0.04 0.04 0.04 nA Typc A Suffix - 55 to 125 C Mind 0 Maxd 12 120 D Suffix - 40 to 85 C Mind 0 Maxd 12 120 Unit V %
rDS(on) Matching Between Channelsg rDS(on) IS(off) ID(off) ID(on)
Drain On Leakage Current Dynamic Characteristics Switching Time of Multiplexer Enable Turn-On Time Enable Turn-Off Time Charge Injection Power Supplies Positive Supply Current Negative Supply Current
tOPEN tON(EN) tOFF(EN) Q
VS1 = 8 V, VS8 = 0 V, VIN = 2.4 V VINH = 2.4 V, VINL = 0 V VS1 = 5 V CL = 1 nF, VS = 6 V, RS = 0
Room Room Room Room Room Full Room Full
300 250 150 20 13 - 0.01 - 20 - 20
450 600 300
450 600 300 pC ns
I+ VEN = 0 V or 5 V, VA = 0 V or 5 V I-
30 75 - 20 - 20
30 75
A
Notes: a. Refer to PROCESS OPTION FLOWCHART. b. Room = 25 C, Full = as determined by the operating temperature suffix. c. Typical values are for DESIGN AID ONLY, not guaranteed nor subject to production testing. d. The algebraic convention whereby the most negative value is a minimum and the most positive a maximum, is used in this data sheet. e. Guaranteed by design, not subject to production test. f. VIN = input voltage to perform proper function. g. rDS(on) = rDS(on) MAX - rDS(on) MIN. h. Worst case isolation occurs on Channel 4 due to proximity to the drain pin.
Stresses beyond those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
Document Number: 70061 S-71009-Rev. I, 14-May-07
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DG406/407
Vishay Siliconix
TYPICAL CHARACTERISTICS TA = 25 C, unless otherwise noted
160 80 70 r DS(on) - On-Resistance () r DS(on) - On-Resistance () 120 5V 60 50 40 30 20 10 0 - 20 - 12 -4 4 VD - Drain Voltage (V) 12 20 0 - 15 125 C 85 C 25 C 0C - 40 C - 55 C V+ = 15 V V- = - 15 V - 10 -5 0 5 VD - Drain Voltage (V) 10 15
80 8V 10 V 12 V 15 V 20 V
40
rDS(on) vs. VD and Supply
120 240 V+ = 7.5 V r DS(on) - On-Resistance () 200 I D, I S - Current (pA) 40 160 10 V 120 80 40 0 0 4 8 12 VD - Drain Voltage (V) 16 20 12 V 15 V 20 V 22 V V- = 0 V 80
rDS(on) vs. VD and Temperature
V+ = 15 V V- = - 15 V VS = - VD for ID(off) VD = VS(open) for ID(on)
IS(off) 0
- 40
DG406 ID(on), ID(off) DG407 ID(on), ID(off)
- 80
- 120 - 15
- 10
-5 0 5 10 VS , VD - Source Drain Voltage (V)
15
rDS(on) vs. VD and Supply
100 nA 10 nA V+ = 15 V V- = - 15 V VD = "14 V 350 300 250 1 nA I D, I S - Current Time (ns) ID(on), ID(off) 200
ID , IS Leakage Currents vs. Analog Voltage
tTRANS
100 pA IS(off)
tON(EN) 150 100 tOFF(EN) 50 0
10 pA
1 pA 0.1 pA - 55 - 35 - 15
5
25
45
65
85
105
125
5
10
15
20
Temperature (C)
VSUPPLY - Supply Voltage (V)
ID , IS Leakages vs. Temperature
Switching Times vs. Bipolar Supplies
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Document Number: 70061 S-71009-Rev. I, 14-May-07
DG406/407
Vishay Siliconix
TYPICAL CHARACTERISTICS TA = 25 C, unless otherwise noted
700 V- = 0 V 600 500 Time (ns) 400 300 tON(EN) 200 100 0 5 10 15 20 V+ - Supply Voltage (V) 20 10 0 - 15 V+ = 15 V, V- = - 15 V tTRANS 60 50 40 30 70
Q (pC)
V+ = 12 V, V- = 0 V
tOFF(EN)
- 10
-5
0
5
10
15
VS - Source Voltage (V)
Switching Times vs. Single Supply
- 140 - 120 6 - 100 I - Current (mA) ISOL (dB) - 80 - 60 - 40 - 20 -8 0 100 1k 10 k 100 k 1M 10 M - 10 10 4 2 0 -2 -4 10 8
Charge Injection vs. Analog Voltage
EN = 5 V AX = 0 or 5 V I+
IGND I-
-6
100
1k
10 k
100 k
1M
10 M
f - Frequency (Hz)
f - Frequency (Hz)
Off-Isolation vs. Frequency
300 V+ = 15 V V- = - 15 V 3
Supply Currents vs. Switching Frequency
260
220 Time (ns) V TH (V) tTRANS 180 tON(EN)
2
140
1
100 tOFF(EN) 60 - 55 - 35 - 15 5 25 45 65 85 105 125 0 0 5 10 15 20
Temperature (C)
VSUPPLY - Supply Voltage (V)
tON/tOFF vs. Temperature
Switching Threshold vs. Supply Voltage
Document Number: 70061 S-71009-Rev. I, 14-May-07
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DG406/407
Vishay Siliconix
SCHEMATIC DIAGRAM (TYPICAL CHANNEL)
V+ GND VREF D A0 V+ AX Level Shift Decode/ Drive V-
S1 V+ EN Sn V-
Figure 1.
TEST CIRCUITS
+ 15 V + 2.4 V EN A3 A2 A1 A0 GND 50 - 15 V Switch Output + 15 V + 2.4 V V+ VO 10 V 0V 90 % VS8 tTRANS S1 ON VO 35 pF S8 ON tTRANS V300 35 pF VS1 90 % V+ S1 S2 - S 15 10 V tr < 20 ns tf < 20 ns 50 % 0V
DG406
S16 D
10 V VO
Logic Input
3V
EN A2 A1 A0 GND 50
S1b
*
DG407
S8b Db V300 - 15 V 10 V
* = S1a - S8a, S2b S 7b, Da
Figure 2. Transition Time
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Document Number: 70061 S-71009-Rev. I, 14-May-07
DG406/407
Vishay Siliconix
TEST CIRCUITS
+ 15 V V+ A3 A2 A1 A0 EN GND 50 - 15 V V300 35 pF S1 S2 - S 16 -5V
DG406
D VO Logic Input 3V 50 % 0V tON(EN) + 15 V V+ S1b S1a - S 8a S2b - S 8b -5V Switch Output VO VO 90 % 90 % 0V tOFF(EN)
tr < 20 ns tf < 20 ns
A2 A1 A0
DG407
EN GND 50 - 15 V Da and Db V300 35 pF VO
Figure 3. Enable Switching Time
+ 15 V Logic Input +5V 3V 50 % 0V tr < 20 ns tf < 20 ns
V+ + 2.4 V EN A3 A2 A1 A0 GND 50 All S and Da
DG406 DG407
D,D b V300 - 15 V 35 pF VO Switch Output VO 0V tOPEN VS 80 %
Figure 4. Break-Before-Make Interval
Document Number: 70061 S-71009-Rev. I, 14-May-07
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DG406/407
Vishay Siliconix
APPLICATIONS HINTS
Sampling speed is limited by two consecutive events: the transition time of the multiplexer, and the settling time of the sampled signal at the output. tTRANS is given on the data sheet. Settling time at the load depends on several parameters: rDS(on) of the multiplexer, source impedance, multiplexer and load capacitances, charge injection of the multiplexer and accuracy desired. The settling time for the multiplexer alone can be derived from the model shown in Figure 5. Assuming a low impedance signal source like that presented by an op amp or a buffer amplifier, the settling time of the RC network for a given accuracy is equal to n:
% ACCURACY 0.25 0.012 0.0017 # BITS 8 12 15 N 6 9 11
The maximum sampling frequency of the multiplexer is: 1 f s = --------------------------------------------------------N ( t SETTLING + t TRANS ) where N = number of channels to scan tSETTLING = n = n x rDS(on) x CD(on) For the DG406 then, at room temp and for 12-bit accuracy, using the maximum limits: 1 f s = ------------------------------------------------------------------------------------------------------12 -12 16 ( 9 x 100 x 10 F ) + 300 x 10 s or fs = 694 kHz (3)
(1)
(2)
From the sampling theorem, to properly recover the original signal, the sampling frequency should be more than twice the maximum component frequency of the original signal. This assumes perfect bandlimiting. In a real application sampling at three to four times the filter cutoff frequency is a good practice. Therefore from equation 2 above: 1 f c = -- x f s = 173 kHz 4
rDS(on) VOUT RS = 0 CD(on)
(4)
Figure 5. Simplified Model of One Multiplexer Channel
From this we can see that the DG406 can be used to sample 16 different signals whose maximum component frequency can be as high as 173 kHz. If for example, two channels are used to double sample the same incoming signal then its cutoff frequency can be doubled.
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Document Number: 70061 S-71009-Rev. I, 14-May-07
DG406/407
Vishay Siliconix
APPLICATIONS HINTS
The block diagram shown in Figure 6 illustrates a typical data acquisition front end suitable for low-level analog signals. Differential multiplexing of small signals is preferred since this method helps to reject any common mode noise. This is especially important when the sensors are located at a distance and it may eliminate the need for individual amplifiers. A low rDS(on), low leakage multiplexer like the DG407 helps to reduce measurement errors. The low power dissipation of the DG407 minimizes on-chip thermal gradients which can cause errors due to temperature mismatch along the parasitic thermocouple paths. Please refer to Application Note AN203 for additional information.
To Sensor 1 Analog Multiplexer
Inst Amp
S/H 12-Bit A/D Converter
To Sensor 8
DG407
Controller
Figure 6. Measuring low-level analog signals is more accurate when using a differential multiplexing technique.
Vishay Siliconix maintains worldwide manufacturing capability. Products may be manufactured at one of several qualified locations. Reliability data for Silicon Technology and Package Reliability represent a composite of all qualified locations. For related documents such as package/tape drawings, part marking, and reliability data, see http://www.vishay.com/ppg?70061.
Document Number: 70061 S-71009-Rev. I, 14-May-07
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Legal Disclaimer Notice
Vishay
Disclaimer
All product specifications and data are subject to change without notice. Vishay Intertechnology, Inc., its affiliates, agents, and employees, and all persons acting on its or their behalf (collectively, "Vishay"), disclaim any and all liability for any errors, inaccuracies or incompleteness contained herein or in any other disclosure relating to any product. Vishay disclaims any and all liability arising out of the use or application of any product described herein or of any information provided herein to the maximum extent permitted by law. The product specifications do not expand or otherwise modify Vishay's terms and conditions of purchase, including but not limited to the warranty expressed therein, which apply to these products. No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted by this document or by any conduct of Vishay. The products shown herein are not designed for use in medical, life-saving, or life-sustaining applications unless otherwise expressly indicated. Customers using or selling Vishay products not expressly indicated for use in such applications do so entirely at their own risk and agree to fully indemnify Vishay for any damages arising or resulting from such use or sale. Please contact authorized Vishay personnel to obtain written terms and conditions regarding products designed for such applications. Product names and markings noted herein may be trademarks of their respective owners.
Document Number: 91000 Revision: 18-Jul-08
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