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DG9424/9425/9426
Vishay Siliconix
Low-Voltage, Dual Supply, Low rON, Quad SPST Analog Switches
FEATURES
D 2.7- thru 12-V Single Supply or "3- thru "6-Dual Supply D On-Resistance--rDS(on): 1.7 W D Fast Switching --tON: 42 ns --tOFF: 28 ns D TTL, CMOS Compatible D Low Leakage: 0.2 nA D 2000-V ESD Protection
BENEFITS
D D D D Widest Dynamic Range Low Signal Errors and Distortion Break-Before-Make Switching Action Simple Interfacing
APPLICATIONS
D D D D D D Automatic Test Equipment Data Acquisition Systems Communication Systems ADC Systems xDSL and PBX/PABX Audio Signal Routing
DESCRIPTION
The DG9424/9425/9426 are low voltage precision monolithic quad single-pole-single-throw analog switches. Combining high speed (tON: 42 ns), flat rDS(on) over the analog signal range ( W), minimal insertion lose ( - 3 dB at 190 MHz), and excellent crosstalk and off-isolation performance, the DG9424/9425/9426 are ideally suited for audio and video signal switching. The DG9424 and DG9425 respond to opposite control logic as shown in the Truth Table. The DG9426 has two normally open and two normally closed switches.
Using BiCMOS wafer fabrication technology allows the DG9424/9425/9426 to operate on single and dual supplies. Single supply voltage ranges from 3 to 12 V while dual supply operation is recommended with "3 to "6 V.
FUNCTIONAL BLOCK DIAGRAM AND PIN CONFIGURATION
DG9424/DG9425
TSSOP IN1 COM1 NC1/NO1 VGND NC4/NO4 COM4 IN4 1 2 3 4 5 6 7 8 Top View 16 15 14 13 12 11 10 9 IN2 COM2 NC2/NO2 V+ VL NC3/NO3 COM3 IN3
TRUTH TABLE
Logic
0 1
DG9424
OFF ON
DG9425
ON OFF
Document Number: 71807 S-31267--Rev. C, 16-Jun-03
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DG9424/9425/9426
Vishay Siliconix
FUNCTIONAL BLOCK DIAGRAM AND PIN CONFIGURATION
DG9426
TSSOP
IN1 COM1 NC1 VGND NC4 COM4 IN4
1 2 3 4 5 6 7 8 Top View
16 15 14 13 12 11 10 9
IN2 COM2 NO2 V+ VL NO3 COM3 IN3
TRUTH TABLE
Logic
0 1
SW1, SW4
ON OFF
SW2, SW3
OFF ON
ORDERING INFORMATION
Temp Range DG9424/9425
DG9424DQ - 40 to 85_C 16 Pin TSSOP 16-Pin DG9425DQ
Package
Part Number
DG9426
- 40 to 85_C 16-Pin TSSOP DG9426DQ
ABSOLUTE MAXIMUM RATINGS
V+ to V - . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . - 0.3 TO 13 V GND to V - . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V VL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . (GND - 0.3 V) to (V+) +0.3 V IN, COM, NC, NOa . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . - 0.3 to (V+ +0.3 V) Continuous Current (NO, NC, COM Pins) . . . . . . . . . . . . . . . . . . . . . 100 mA Peak Current, S or D (Pulsed 1 ms, 10% Duty Cycle) . . . . . . . . . . . . 200 mA Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . - 65 to 150_C Notes: a. Signals on NC, NO, COM or IN exceeding V+ or V - will be clamped by internal diodes. Limit forward diode current to maximum current ratings. b. All leads welded or soldered to PC Board. c. Derate 7 mW/_C above 25_C Power Dissipation (Package)b 16-Pin TSSOPc . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 450 mW
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Document Number: 71807 S-31267--Rev. C, 16-Jun-03
DG9424/9425/9426
Vishay Siliconix
SPECIFICATIONSa (SINGLE SUPPLY 12 V)
Test Conditions Unless Specified Parameter Analog Switch
Analog Signal Rangee On-Resistance VANALOG rON V+ = 10.8 V, V - = 0 V INO, INC = 50 mA, VCOM = 2/9 V Full Room Full 0 1.8 12 3 4 V W
Limits
- 40 to 85_C
Symbol
V+ = 12 V V - = 0 V V, VL = 5 V, VIN = 2.4 V, 0.8 Vf
Tempb
Mind
Typc
Maxd
Unit
Digital Control
Input Current IINL or IINH Full -1 0.01 1 mA
Dynamic Characteristics
Turn-On Timee Turn-Off Timee Break-Before-Make Time Delaye Charge Injectione Off Isolatione Channel-to-Channel Crosstalke NO, NC Off Capacitancee COM Off Capacitancee Capacitancee tON tOFF tD QINJ OIRR XTALK CNO(off) CNC(off) CCOM(off) CCOM(on) f = 1 MH MHz RL = 300 W , CL = 35 pF VNO, VNC = 5 V See Figure 2 DG9426 Only, VNO, VNC = 5 V RL = 300 W , CL = 35 pF Vg = 0 V, Rg = 0 W , CL = 1 nF RL = 50 W , CL = 5 pF, f = 1 MHz Room Full Room Full Room Room Room Room Room Room Room 2 38 - 56 - 77 49 37 89 F pF dB pC 42 28 57 65 42 44 ns
Channel On
Power Supplies
Positive Supply Current Negative Supply Current Logic Supply Current Ground Current I+ IVIN = 0 or VL IL IGND Room Full Room Full Room Full Room Full -1 -5 -1 -5 0.02 - 0.002 0.002 - 0.002 1 5 mA 1 5
SPECIFICATIONSa (DUAL SUPPLY "5 V)
Test Conditions Unless Specified Parameter Analog Switch
Analog Signal Rangee On-Resistance VANALOG rON INO(off) INC(off) ICOM(off) ICOM(on) V+ = 4.5 V, V - = - 4.5 V INO, INC = 50 mA, VCOM = "3.5 V V+ = 5.5 V, V - = - 5.5 V VCOM = "4.5 V, VNO, VNC = #4.5 V V+ = 5.5 V, V - = - 5.5 V VNO, VNC = VCOM = "4.5 V Full Room Full Room Full Room Full Room Full -1 - 10 -1 - 10 -1 - 10 -5 2 5 3.3 4.3 1 10 1 10 1 10 nA V W
Limits
- 40 to 85_C
Symbol
V+ = 5 V V - = - 5 V V, VL = 5 V, VIN = 2.4 V, 0.8 Vf
Tempb
Mind
Typc
Maxd
Unit
Switch Off Leakage Current Channel On Leakage Current
Digital Control
Input Currenta IINL or IINH Full -1 0.05 1 mA
Document Number: 71807 S-31267--Rev. C, 16-Jun-03
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DG9424/9425/9426
Vishay Siliconix
SPECIFICATIONSa (DUAL SUPPLY "5 V)
Test Conditions Unless Specified Parameter Dynamic Characteristics
Turn-On Timee Turn-Off Timee Break-Before-Make Time Delaye Charge Injectione Off Isolatione Channel-to-Channel Crosstalke Source Off Capacitancee Drain Off Capacitancee Capacitancee tON tOFF tD QINJ OIRR XTALK CNO(off) CNC(off) CCOM(off) CCOM(on) f = 1 MH MHz RL = 300 W , CL = 35 pF VNO, VNC = "3.5 V See Figure 2 DG9426 Only, VNO, VNC = 3.5 V RL = 300 W , CL = 35 pF Vg = 0 V, Rg = 0 W , CL = 1 nF RL = 50 W , CL = 5 pF, f = 1 MHz Room Full Room Full Room Room Room Room Room Room Room 2 112 - 56 - 82 38 38 89 F pF dB pC 56 42 74 81 64 67 ns
Limits
- 40 to 85_C
Symbol
V+ = 5 V, V - = - 5 V VL = 5 V, VIN = 2.4 V, 0.8 Vf
Tempb
Mind
Typc
Maxd
Unit
Channel On
Power Supplies
Positive Supply Currente Negative Supply Currente Logic Supply Currente Ground Currente I+ IVIN = 0 or VL IL IGND Room Full Room Full Room Full Room Full -1 -5 -1 -5 0.03 - 0.002 0.002 - 0.002 1 5 mA 1 5
SPECIFICATIONSa (SINGLE SUPPLY 5 V)
Test Conditions Unless Specified Parameter Analog Switch
Analog Signal Rangee On-Resistancee VANALOG rON V+ = 4.5 V, INO, INC = 50 mA VCOM = 1 V, 3.5 V Full Room Full 3.4 5 4.8 5.8 V W
Limits
- 40 to 85_C
Symbol
V+ = 5 V V - = 0 V V, VL = 5 V, VIN = 2.4 V, 0.8 Vf
Tempb
Mind
Typc
Maxd
Unit
Dynamic Characteristics
Turn-On Timee Turn-Off Timee Break-Before-Make Time Delaye Charge Injectione tON tOFF tD QINJ RL = 300 W , CL = 35 pF VNO, VNC = 3.5 V, See Figure 2 DG9426 Only, VNO, VNC = 3.5 V, RL = 300 W , CL = 35 pF Vg = 0 V, Rg = 0 W , CL = 1 nF Room Hot Room Hot Room Room 5 10 pC 71 37 86 106 51 56 ns
Power Supplies
Positive Supply Currente Negative Supply Currente Logic Supply Currente Ground Currente I+ IVIN = 0 or VL IL IGND Room Hot Room Hot Room Hot Room Hot -1 -5 -1 -5 0.02 - 0.002 0.002 - 0.002 1 5 mA 1 5
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Document Number: 71807 S-31267--Rev. C, 16-Jun-03
DG9424/9425/9426
Vishay Siliconix
SPECIFICATIONSa (SINGLE SUPPLY 3 V)
Test Conditions Unless Specified Parameter Analog Switch
Analog Signal Rangee On-Resistance VANALOG rON INO(off) INC(off) ICOM(off) ICOM(on) V+ = 2.7 V, V - = 0 V INO, INC = 5 mA, VCOM = 0.5, 2.2 V V+ = 3.3 V, V - = 0 V VCOM = 0.3, 3 V, VNO, VNC = 3, 0.3 V V+ = 3.3 V, V - = 0 V VNO, VNC = VCOM = 0.3, 3 V Full Room Full Room Full Room Full Room Full -1 - 10 -1 - 10 -1 - 10 0 8 3 13.8 15.1 1 10 1 10 1 10 nA V W
Limits
- 40 to 85_C
Symbol
V+ = 3 V V - = 0 V V, VL = 3 V, VIN = 2.4 V, 0.4 Vf
Tempb
Mind
Typc
Maxd
Unit
Switch Off Leakage Currenta Channel On Leakage Currenta
Digital Controle
Input Current IINL or IINH Full -1 0.005 1 mA
Dynamic Characteristics
Turn-On Time Turn-Off Time Break-Before-Make Time Delay Charge Injectione tON tOFF tD QINJ OIRR XTALK CNO(off) CNC(off) CCOM(off) CCOM(on) f = 1 MH MHz RL = 300 W , CL = 35 pF VNO, VNC = 1.5 V See Figure 2 DG9426 Only, VNO, VNC = 1.5 V RL = 300 W , CL = 35 pF Vg = 0 V, Rg = 0 W , CL = 1 nF RL = 50 W , CL = 5 pF, f = 1 MHz Room Full Room Full Room Room Room Room Room Room Room 5 15 - 56 - 80 53 42 92 F pF dB pC 140 65 163 193 80 89 ns
Off Isolatione Channel-to-Channel Crosstalke Source Off Capacitancee Drain Off Capacitancee Channel On Capacitancee
Notes: a. Leakage parameters are guaranteed by worst case test conditions and not subject to production test. 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.
Document Number: 71807 S-31267--Rev. C, 16-Jun-03
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DG9424/9425/9426
Vishay Siliconix
TYPICAL CHARACTERISTICS (25_C UNLESS NOTED)
1
10
rON vs. VCOM and Supply Voltage
T = 25_C IS = 50 mA
12
rON vs. Analog Voltage and Temperature
IS = 50 mA A = 85_C B = 25_C C = - 40_C V+ = 2.7 V
8 r ON - On-Resistance ( W ) VCC = 2.7 V 6 r ON - On-Resistance ( W )
10
8 A 6 B C 4 V+ = 4.5 V A B C 2
4
VCC = 4.5 V
2
VCC = 10.8 V
0 0 3 6 9 12 VCOM -- Analog Voltage (V)
0 0 1 2 3 4 5 VCOM -- Analog Voltage (V)
8 7 r ON - On-Resistance ( W ) 6 5 4 3 2 1 0 -5
rON vs. Analog Voltage and Temperature
V" = "5 V IS = 50 mA A = 85_C B = 25_C C = - 40_C I+ - Supply Current (pA)
Supply Current vs. Temperature
100 V+ = 5 V VIN = 0 V
A
B
C
-3
-1
1
3
5
10 - 40
- 20
0
20
40
60
80
100
VCOM -- Analog Voltage (V)
Temperature (_C)
Leakage Current vs. Analog Voltage
60 V+ = 5 V V- = -5 V I+ - Supply Current (A)
Switching Current vs. Input Switching Frequency
100 m 10 m 1m 100 m 10 m 1m 100 n V+ = 5 V V- = -5 V
40 Leakage Current (pA)
20 ICOM(on) 0 INO(off)/INC(off) - 20 ICOM(off)
- 40 10 n - 60 -5 -3 -1 1 3 5 1n 10 100 1K 10 K 100 K 1M 10 M
VCOM, VNO, VNC - Analog Voltage www.vishay.com
Input Switching Frequency (Hz) Document Number: 71807 S-31267--Rev. C, 16-Jun-03
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DG9424/9425/9426
Vishay Siliconix
TYPICAL CHARACTERISTICS (25_C UNLESS NOTED)
Switching Time vs. Temperature and Single Supply Voltage
180 120 VSUPPLY = "5 V 150 tON V+ = 3 V 120 80 100
Switching Time vs. Temperature and Dual Supply Voltage
90
tON V+ = 5 V tOFF V+ = 3 V tON V+ = 12 V tOFF V+ = 5 V tOFF V+ = 12 V
60
tON VS = - 3.5 V
tON VS = 3.5 V
60
40 tOFF VS = - 3.5 V 20 tOFF VS = 3.5 V
30
0 - 60
- 40
- 20
0
20
40
60
80
100
0 - 60
- 40
- 20
0
20
40
60
80
100
Temperature (_C)
Temperature (_C)
Leakage Current vs. Temperature
1000 V+ = "5 V V T - Switching Threshold (V) 2.0 1.8 1.6 1.4 1.2 1.0 0.8 0.6 0.4 0.2 1 - 60 - 40 - 20 0 20 40 60 80 100 0.0 2
Switching Threshold vs. Supply Voltage
Leakage Current (pA)
100
ICOM(on) 10 ICOM(off)
4
6
8
10
12
14
Temperature (_C)
V+ - Supply Voltage (V)
Insertion Loss, Off Isolation and Crosstalk vs. Frequency
10 0 - 10 - 20 Loss (dB) - 30 - 40 - 50 - 60 - 70 - 80 - 90 100 K 1M 10 M Frequency (MHz) Document Number: 71807 S-31267--Rev. C, 16-Jun-03 100 M 1G Crosstalk Off Isolation V+ = 3 V V- = 0 V RL = 50 W Insertion Loss - 3 dB = 280 MHz
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DG9424/9425/9426
Vishay Siliconix
SCHEMATIC DIAGRAM (TYPICAL CHANNEL)
V+
S VL VVIN Level Shift/ Drive V+ GND D
V-
FIGURE 1.
TEST CIRCUITS
VL
V+
Logic Input
VINH 50% VINL
tr <5 ns tf <5 ns tOFF
VL VIN NO or NC IN GND
V+ COM VOUT VOUT RL 300 W CL 35 pF 0V tON 90%
0.9 x VOUT
V-
Switch Output Switch
VCL (includes fixture and stray capacitance) VOUT = VIN RL RL + rON
Note:
Logic input waveform is inverted for switches that have the opposite logic sense control
FIGURE 2. Switching Time
VL V+ Logic Input VIN1 VIN2 NO1 IN1 NC2 IN2 GND VCOM2 VO2 Switch Output RL1 300 W RL2 300 W CL2 35 pF CL1 35 pF Switch Output 0V VIN2 VO2 0V COM1 3V 50% 0V VIN1 VO1
VO1
90%
90%
tD
tD
VCL (includes fixture and stray capacitance)
FIGURE 3. Break-Before-Make (DG9426)
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Document Number: 71807 S-31267--Rev. C, 16-Jun-03
DG9424/9425/9426
Vishay Siliconix
TEST CIRCUITS
VL V+ VO Rg VL COM IN GND VINX VVIN = 0 - V+ V+ NO or NC VOUT CL 10 nF OFF ON Q = DVO x CL OFF INX OFF ON OFF DVO
Vg
INX dependent on switch configuration Input polarity determined by sense of switch.
FIGURE 4. Charge Injection
C
VL
V+ C V+ COM1 50 W
VS Rg = 50 W 0V, 2.4 V
VL NO1 IN1 NO2 NC IN2 GND VOUT VIN
COM2 RL VC
VOUT
0V, 2.4 V
XTALK Isolation = 20 log C = RF bypass
V-
FIGURE 5. Crosstalk
VL C VL NO or NC
V+ V+
C
VL VOUT C VL
V+
VIN Rg = 50 W 0V, 2.4 V
COM
C
V+
IN
RL 50 W GND VC 0 V, 2.4 V IN
COM Meter HP4192A Impedance Analyzer or Equivalent C
NO or NC VGND Off Isolation = 20 log C = RF Bypass VOUT VIN VV-
FIGURE 6. Off Isolation
FIGURE 7. Source/Drain Capacitances
Document Number: 71807 S-31267--Rev. C, 16-Jun-03
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