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19-0114; Rev 2; 12/96
Improved, SPST/SPDT Analog Switches
_______________General Description
Maxim's redesigned DG417/DG418/DG419 precision, CMOS, monolithic analog switches now feature guaranteed on-resistance matching (3 max) between switches and guaranteed on-resistance flatness over the signal range (4 max). These switches conduct equally well in either direction and guarantee low charge injection, low power consumption, and an ESD tolerance of 2000V minimum per Method 3015.7. The new design offers low off-leakage current over temperature (less than 5nA at +85C). The DG417/DG418 are single-pole/single-throw (SPST) switches. The DG417 is normally closed, and the DG418 is normally open. The DG419 is singlepole/double-throw (SPDT) with one normally closed switch and one normally open switch. Switching times are less than 175ns max for tON and less than 145ns max for tOFF. Operation is from a single +10V to +30V supply, or bipolar 4.5V to 20V supplies. The improved DG417/DG418/DG419 are fabricated with a 44V silicon-gate process.
______________________New Features
o Plug-In Upgrades for Industry-Standard DG417/DG418/DG419 o Improved RDS(ON) Match Between Channels (3 max, DG419 only) o Guaranteed RFLAT(ON) Over Signal Range (4 max) o Improved Charge Injection (10pC max) o Improved Off-Leakage Current Over Temperature (<5nA at +85C) o Withstand Electrostatic Discharge (2000V min) per Method 3015.7
DG417/DG418/DG419
__________________Existing Features
o Low RDS(ON) (35 max) o Single-Supply Operation +10V to +30V Bipolar-Supply Operation 4.5V to 20V o Low Power Consumption (35W max) o Rail-to-Rail Signal Handling o TTL/CMOS-Logic Compatible
________________________Applications
Sample-and-Hold Circuits Test Equipment Modems Guidance and Control Systems Audio Signal Routing Communications Systems Battery-Operated Systems Fax Machines PBX, PABX Military Radios
______________Ordering Information
PART DG417CJ DG417CY DG417C/D DG417DJ DG417DY TEMP. RANGE 0C to +70C 0C to +70C 0C to +70C -40C to +85C -40C to +85C PIN-PACKAGE 8 Plastic DIP 8 SO Dice* 8 Plastic DIP 8 SO
Ordering Information continued at end of data sheet. * Contact factory for dice specifications.
_____________________Pin Configurations/Functional Diagrams/Truth Tables
TOP VIEW
S N.C. 1 2 8 7 6 D VIN VL S N.C. 1 2 8 7 6 D VIN VL D S1 1 2 8 7 6 S2 VIN VL
GND 3 V+ 4
GND 3 V+ 4
GND 3 V+ 4
DG417
DIP/SO
DG417 LOGIC 0 1 SWITCH ON OFF
5
DG418
DIP/SO
DG418 LOGIC 0 1 SWITCH OFF ON
5
DG419
DIP/SO
DG419 SWITCH 1 ON OFF
5
LOGIC 0 1
SWITCH 2 OFF ON
N.C. = NO INTERNAL CONNECTION SWITCHES SHOWN FOR LOGIC "0" INPUT
________________________________________________________________ Maxim Integrated Products
1
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800
Improved, SPST/SPDT Analog Switches DG417/DG418/DG419
ABSOLUTE MAXIMUM RATINGS
Voltage Referenced to VV+ .......................................................................................44V GND....................................................................................25V VL ..................................................(GND - 0.3V) to (V+ + 0.3V) Digital Inputs VS, VD (Note 1) .........(V- - 2V) to (V+ + 2V) or 30mA (whichever occurs first) Continuous Current (any terminal) (Note 1) ........................30mA Peak Current, S or D (pulsed at 1ms, 10% duty cycle max)..100mA Continuous Power Dissipation (TA = +70C) Plastic DIP (derate 9.09mW/C above +70C) .............727mW SO (derate 5.88mW/C above +70C) ..........................471mW CERDIP (derate 8.00mW/C above +70C) ..................640mW Operating Temperature Ranges DG41_C_ .............................................................0C to +70C DG41_D_ ..........................................................-40C to +85C DG41_AK ........................................................-55C to +125C Storage Temperature Range .............................-65C to +150C Lead Temperature (soldering, 10sec) .............................+300C
Note 1: Signals on S, D, or IN exceeding V+ or V- are clamped by internal diodes. Limit forward current to maximum current ratings.
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.
ELECTRICAL CHARACTERISTICS--Dual Supplies
(V+ = +15V, V- = -15V, VL = 5V, GND = 0V, VINL = 0.8V, VINH = 2.4V, TA = TMIN to TMAX, unless otherwise noted.)
PARAMETER SWITCH Analog Signal Range Drain-Source On-Resistance On-Resistance Match Between Channels (Note 4) On-Resistance Flatness (Note 4) Source-Off Leakage Current (Note 5)
SYMBOL
CONDITIONS
MIN
TYP (Note 2)
MAX
UNITS
VS_, VD RDS(ON)
(Note 3) V+ = 13.5V, V- = -13.5V, T = +25C A VD = 10V, A IS = -10mA TA = TMIN to TMAX V+ = 15V, V- = -15V, VD = 10V, IS = -10mA TA = +25C TA = TMIN to TMAX TA = +25C TA = TMIN to TMAX C, D
-15 20 20
15 35 30 45 3 4 4 6
V
RDS(ON)
V+ = 15V, V- = -15V, RFLAT(ON) VD = 5V, IS = -10mA
IS(OFF)
V+ = 16.5V, V- = -16.5V, TA = +25C VD = 15.5V, TA = TMIN to VS = 15.5V TMAX DG417/ DG418 TA = TMIN to TMAX TA = +25C DG419 TA = TMIN to TMAX TA = +25C TA = TMIN to TMAX TA = +25C DG419 TA = TMIN to TMAX TA = +25C
-0.25 C, D A C, D A C, D A C, D A C, D A -5 -20 -0.25 -5 -20 -0.75 -10 -40 -0.4 -10 -40 -0.75 -10 -40 -0.1 0.1
0.25 5 20 0.25 5 20 0.75 10 40 0.4 10 40 0.75 10 40 nA nA nA
Drain-On Leakage Current (Note 5)
ID(ON)
V+ = 16.5V, V- = -16.5V, VD = 15.5V, VS = 15.5V
2
_______________________________________________________________________________________
Drain-Off Leakage Current (Note 5)
ID(OFF)
V+ = 16.5V, V- = -16.5V, VD = 15.5V, VS = 15.5V
DG417/ DG418
Improved, SPST/SPDT Analog Switches
ELECTRICAL CHARACTERISTICS--Dual Supplies (continued)
(V+ = +15V, V- = -15V, VL = 5V, GND = 0V, VINL = 0.8V, VINH = 2.4V, TA = TMIN to TMAX, unless otherwise noted.)
DG417/DG418/DG419
PARAMETER LOGIC INPUT Logic Input Current with Input Voltage High Logic Input Current with Input Voltage Low DYNAMIC Turn-On Time Turn-Off Time Transition Time Break-Before-Make Interval Charge Injection (Note 3) Off-Isolation Rejection Ratio (Note 6) Crosstalk (Note 7) Drain Off-Capacitance Source Off-Capacitance Drain-Source On-Capacitance SUPPLY Positive Supply Current Negative Supply Current Logic Supply Current Ground Current
SYMBOL
CONDITIONS
MIN
TYP (Note 2)
MAX
UNITS
IINH IINL
VIN = 2.4V VIN = 0.8V
-0.5 -0.5
0.005 0.005
0.5 0.5
A A
tON tOFF tTRANS tD Q OIRR
DG417/DG418, VD = 10V, Figure 2 DG417/DG418, VD = 10V, Figure 2 DG419, VS = 10V, Figure 3
TA = +25C TA = TMIN to TMAX TA = +25C TA = TMIN to TMAX TA = +25C TA = TMIN to TMAX 5
100 60
175 250 145 210 175 250
ns ns ns ns
DG419, VS1 = VS2 = 10V, Figure 4, TA = +25C VGEN = 0V, Figure 5, TA = +25C RL = 500, CL = 5pF, f = 1MHz, Figure 6, TA = +25C DG419, RL = 50, CL = 5pF, f = 1MHz, Figure 7, TA = +25C
13 3 68 85 8 8 30 35 10
pC dB dB pF pF pF
CD (OFF) CS (OFF) CD (ON) or CS (ON)
VD = 0V, f = 1MHz, Figure 8, TA = +25C VD = 0V, f = 1MHz, Figure 8, TA = +25C
VS = 0V, f = 1MHz, Figure 9, TA = +25C
DG417/DG418 DG419 TA = +25C TA = TMIN to TMAX TA = +25C TA = TMIN to TMAX TA = +25C TA = TMIN to TMAX TA = +25C TA = TMIN to TMAX -1 -5 -1 -5 -1 -5 -1 -5
I+ IIL IGND
V+ = 16.5V, V- = -16.5V, VIN = 0V or 5V V+ = 16.5V, V- = -16.5V, VIN = 0V or 5V V+ = 16.5V, V- = -16.5V, VIN = 0V or 5V V+ = 16.5V, V- = -16.5V, VIN = 0V or 5V
-0.0001 -0.0001 -0.0001 -0.0001
1 5 1 5 1 5 1 5
A A A A
_______________________________________________________________________________________
3
Improved, SPST/SPDT Analog Switches DG417/DG418/DG419
ELECTRICAL CHARACTERISTICS--Single Supply
(V+ = +12V, V- = 0V, VL = 5V, GND = 0V, VINH = 2.4V, VINL = 0.8V, TA = +25C, unless otherwise noted.)
PARAMETER SWITCH Analog Signal Range Drain-Source On-Resistance DYNAMIC Turn-On Time Turn-Off Time Break-Before-Make Interval Charge Injection (Note 3) SUPPLY Positive Supply Current Negative Supply Current Logic Supply Current Ground Current
SYMBOL
CONDITIONS
MIN
TYP (Note 2)
MAX
UNITS
VANALOG RDS(ON) tON tOFF tD Q
(Note 3) IS = -10mA, VD = 3.8V, V+ = 10.8V DG417/DG418, VD = 8V, Figure 2 DG417/DG418, VD = 8V, Figure 2 DG419, RL = 1000, CL = 35pF, Figure 4 CL = 10nF, VGEN = 0V, RGEN = 0V, Figure 5 All channels on or off, V+ = 13.2V, VL = 5.25V, VIN = 0V or 5V All channels on or off, V+ = 13.2V, VL = 5.25V, VIN = 0V or 5V All channels on or off, VL = 5.25V, VIN = 0V or 5V All channels on or off, VL = 5.25V, VIN = 0V or 5V
0 40 110 40 60 2
12 100
V ns ns ns
10
pC
I+ IIL IGND
-0.0001 -0.0001 -0.0001 -0.0001
A A A A
Note 2: Typical values are for design aid only, are not guaranteed, and are not subject to production testing. The algebraic convention where the most negative value is a minimum and the most positive value a maximum is used in this data sheet. Note 3: Guaranteed by design. Note 4: On-resistance match between channels and flatness is guaranteed only with bipolar-supply operation. Flatness is defined as the difference between the maximum and the minimum value of on-resistance as measured at the extremes of the specified analog range. Note 5: Leakage parameters IS(OFF), ID(OFF), and ID(ON) are 100% tested at the maximum rated hot temperature and guaranteed by correlation at +25C. Note 6: Off-Isolation Rejection Ratio = 20log (VD/VS), VD = output, VS = input to off switch. Note 7: Between any two switches.
4
_______________________________________________________________________________________
Improved, SPST/SPDT Analog Switches
__________________________________________Typical Operating Characteristics
(TA = +25C, unless otherwise noted.)
DG417/DG418/DG419
ON-RESISTANCE vs. VD AND POWER-SUPPLY VOLTAGE
45 40 RDS(ON) () 35 30 25 20 15 10 5 -20 -10 0 VD (V) 10 20 5 -20 A: V+ = 5V, V- = -5V B: V+ = 10V, V- = -10V C: V+ = 15V, V- = -15V D: V+ = 20V, V- = -20V
DG417-01
ON-RESISTANCE vs. VD AND TEMPERATURE
DG417-02
ON-RESISTANCE vs. VD (SINGLE SUPPLY)
V- = 0V 120 100 80 60 V+ = 5V
DG417-03
50
35 30 25 20 15 V+ = 15V V- = -15V TA = +125C
140
A RDS(ON) ()
B
C D
TA = -55C 10 TA = +25C 40 20 -10 0 VD (V) 10 20 0 5 10 VD (V) 15 20 V+ = 10V V+ = 15V V+ = 20V
ON-RESISTANCE vs. VD AND TEMPERATURE
DG417-04
OFF-LEAKAGE CURRENT vs. TEMPERATURE
DG417-05
RDS(ON) ()
TA = +85C
ON-LEAKAGE CURRENT vs. TEMPERATURE
V+ = 16.5V V- = -16.5V VD = 15V VS = 15V
DG417-06
70 60 50 TA = +85C 40 TA = +25C 30 20 10 0 5 10 VD (V) 15 V+ = 12V V- = 0V TA = +125C RDS(ON) ()
100 10 OFF-LEAKAGE (nA) 1 0.1 0.01 V+ = 16.5V V- = -16.5V VD = 15V VS = 15V
100 10 ON-LEAKAGE (nA) 1 0.1 0.01
0.001 0.0001 20 -75 25 TEMPERATURE (C) 125
0.001 0.0001 -75 25 TEMPERATURE (C) 125
CHARGE INJECTION vs. ANALOG VOLTAGE
DG417-07
SUPPLY CURRENT vs. TEMPERATURE
A: I+ at V+ = 16.5V B: I- at V- = -16.5V C: IL at VL = 5V A B C 0.01 0.001 0.0001
DG417-08
60 40 20 Q (pC) 0 -20 -40 -60 -20 -15 -10 -5 0 VD (V) 5 10 15 V+ = 15V V- = -15V
100 10 1 0.1
I+, I-, IL (A)
20
-75
25 TEMPERATURE (C)
125
_______________________________________________________________________________________
5
Improved, SPST/SPDT Analog Switches DG417/DG418/DG419
______________________________________________________________Pin Description
PIN DG417 1 -- -- 2 3 4 5 6 7 8 -- DG418 -- 1 -- 2 3 4 5 6 7 8 -- DG419 -- -- 2 -- 3 4 5 6 7 1 8 NAME S S S1 N.C. GND V+ VL IN VD S2 FUNCTION Analog-Switch Source Terminal (normally closed) Analog-Switch Source Terminal (normally open) Analog-Switch Source Terminal 1 (normally closed) No Internal Connection Logic Ground Analog-Signal Positive Supply Input Logic-Level Positive Supply Input Logic-Level Input Analog-Signal Negative Supply Input Analog-Switch Drain Terminal Analog-Switch Source Terminal 2 (normally open)
__________Applications Information
Operation with Supply Voltages Other than 15V
Using supply voltages other than 15V reduces the analog signal range. The DG417/DG418/DG419 switches operate with 4.5V to 20V bipolar supplies or with a +10V to +30V single supply; connect V- to 0V when operating with a single supply. Also, all device types can operate with unbalanced supplies, such as +24V and -5V. VL must be connected to +5V to be TTL compatible, or to V+ for CMOS-logic level inputs. The Typical Operating Characteristics graphs show typical on-resistance with 20V, 15V, 10V, and 5V supplies. (Switching times increase by a factor of two or more for operation at 5V.)
V+
S
D
Vg
DG41_
Overvoltage Protection
Proper power-supply sequencing is recommended for all CMOS devices. Do not exceed the absolute maximum ratings because stresses beyond the listed ratings may cause permanent damage to the devices. Always sequence V+ on first, followed by VL, V-, and logic inputs. If power-supply sequencing is not possible, add two small, external signal diodes in series with the supply pins for overvoltage protection (Figure 1).
V-
Figure 1. Overvoltage Protection Using External Blocking Diodes
Adding diodes reduces the analog signal range to 1V below V+ and 1V above V-, without affecting low switch resistance and low leakage characteristics. Device operation is unchanged, and the difference between V+ and V- should not exceed +44V.
6
_______________________________________________________________________________________
Improved, SPST/SPDT Analog Switches
_____________________________________________________Test Circuits/Timing Diagrams
DG417/DG418/DG419
+5V LOGIC INPUT +3V 50% 0V t R < 20ns t F < 20ns SWITCH INPUT t OFF IN VOUT SWITCH OUTPUT 0V t ON 0.9 x VOUT 0.9 x VOUT LOGIC INPUT GND D VL
+15V V+ S
DG417 DG418
SWITCH OUTPUT VOUT RL 300 CL 35pF
V-
-15V CL INCLUDES FIXTURE AND STRAY CAPACITANCE. RL VOUT = VD RL + RDS(ON)
LOGIC INPUT WAVEFORMS INVERTED FOR SWITCHES THAT HAVE THE OPPOSITE LOGIC SENSE.
(
)
Figure 2. DG417/DG418 Switching Time
DG419
+15V LOGIC INPUT +3V 50% 0V S2 t TRANS SWITCH VOUT1 OUTPUT t TRANS 0.8 x V OUT1 0.8 x V OUT2 LOGIC INPUT IN GND V-15V CL INCLUDES FIXTURE AND STRAY CAPACITANCE. RL 1000 CL 35pF t R < 20ns t F < 20ns S1 V+ +5V VL D VOUT
VOUT2
Figure 3. DG419 Transition Time
_______________________________________________________________________________________
7
Improved, SPST/SPDT Analog Switches DG417/DG418/DG419
______________________________________Test Circuits/Timing Diagrams (continued)
LOGIC INPUT
+3V 50% 0V +10V VOUT1 0.9 x VOUT IN1, IN2 VOUT2 0.9 x VOUT tD tD LOGIC INPUT S1 S2
+5V VL
+15V V+ D
DG419
VOUT RL 300 CL 35pF
SWITCH OUTPUT 1
0V
GND
V-15V
SWITCH OUTPUT 2
VOUT
CL INCLUDES FIXTURE AND STRAY CAPACITANCE.
Figure 4. DG419 Break-Before-Make Interval
+5V VOUT VL VOUT S IN OFF ON OFF V GEN GND
+15V V+ D
DG417 DG418 DG419
VOUT CL 10nF
V-
OFF IN
ON Q = V OUT x C L
OFF
-15V VIN = +3V
IN DEPENDS ON SWITCH CONFIGURATION; INPUT POLARITY DETERMINED BY SENSE OF SWITCH.
Figure 5. Charge Injection
8
_______________________________________________________________________________________
Improved, SPST/SPDT Analog Switches
______________________________________Test Circuits/Timing Diagrams (continued)
DG417/DG418/DG419
10nF SIGNAL GENERATOR 0dBm
+15V
+5V
DG417 DG418 DG419
10nF +15V
+5V
DG419
50
D
V+
VL 0V or 2.4V
SIGNAL GENERATOR 0dBm
D
V+
VL S1
IN NETWORK ANALYZER RL -15V S1 or S2 GND V10nF
0V or 2.4V NETWORK ANALYZER RL
IN
S2 GND V-
D 10nF
-15V
Figure 6. Off-Isolation Rejection Ratio
Figure 7. DG419 Crosstalk
10nF
+15V
+5V
DG417 DG418 DG419
10nF
+15V
+5V
DG417 DG418 DG419
V+ D
VL
V+ D
VL
IN CAPACITANCE METER S f = 1MHz GND V10nF
0V or 2.4V
IN CAPACITANCE METER S f = 1MHz GND V10nF
0V or 2.4V
-15V
-15V
Figure 8. Drain-Source Off-Capacitance
Figure 9. Drain-Source On-Capacitance
_______________________________________________________________________________________
9
Improved, SPST/SPDT Analog Switches DG417/DG418/DG419
__Ordering Information (continued)
PART DG417DK DG417AK DG418CJ DG418CY DG418C/D DG418DJ DG418DY DG418DK DG418AK DG419CJ DG419CY DG419C/D DG419DJ DG419DY DG419DK DG419AK TEMP. RANGE -40C to +85C -55C to +125C 0C to +70C 0C to +70C 0C to +70C -40C to +85C -40C to +85C -40C to +85C -55C to +125C 0C to +70C 0C to +70C 0C to +70C -40C to +85C -40C to +85C -40C to +85C -55C to +125C PIN-PACKAGE 8 CERDIP 8 CERDIP** 8 Plastic DIP 8 SO Dice* 8 Plastic DIP 8 SO 8 CERDIP 8 CERDIP** 8 Plastic DIP 8 SO Dice* 8 Plastic DIP 8 SO 8 CERDIP 8 CERDIP**
______________________Chip Topography
3 2 1
4 9 8 0.076" 1.93mm
5
* Contact factory for dice specifications. **Contact factory for availability and processing to MIL-STD-883B.
6
0.058" 1.47mm
7
TRANSISTOR COUNT: 32 SUBSTRATE CONNECTED TO V+
DIE PAD 1 2 3 4 5 6 7 8 9 DG417 D GND V+ VL IN VN.C. N.C. S DG418 N.C. GND V+ VL IN VS D N.C. DG419 S GND V+ VL IN VS D D
10
______________________________________________________________________________________
Improved, SPST/SPDT Analog Switches
________________________________________________________Package Information
PDIPN.EPS
DG417/DG418/DG419
______________________________________________________________________________________
SOICN.EPS
11
Improved, SPST/SPDT Analog Switches DG417/DG418/DG419
___________________________________________Package Information (continued)
CDIPS.EPS
Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.
12 __________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 (408) 737-7600 (c) 1996 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products.

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