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DG384A_MIL/387A_MIL
Vishay Siliconix
CMOS Analog Switches
(Obsolete for non-hermetic. See DG381B Series for pin-for-pin replacements.)
FEATURES
D D D D
BENEFITS
APPLICATIONS
"15-V Input Range D Full Rail-to-Rail Analog Signal Range D Low Level Switching Circuits Low rDS(on): 30 W D Minimizes Signal Error D Programmable Gain Amplifiers Single Supply Operation D Low Power Dissipation D Portable and Battery Powered Sytems Pin and Function Compatible with the JFET DG180 Family
DESCRIPTION
The DG384A_MIL and DG387A_MIL monolithic CMOS analog switches were designed for applications in instrumentation, communications, and process control. This series is suited for applications requiring fast switching and nearly flat on-resistance over the entire voltage range. switches are ideal for battery powered applications, without sacrificing switching speed. Break-before-make switching action is guaranteed, and an epitaxial layer prevents latchup. Single supply operation is allowed by connecting the V- rail to 0 V.
Designed on Vishay Siliconix' PLUS-40 CMOS process, these devices achieve low power consumption (3.5 mW typical) and excellent on/off switch performance. These
Each switch conducts equally well in both directions when on, and blocks up to the supply voltage when off. These switches are CMOS and quasi TTL logic compatible.
FUNCTIONAL BLOCK DIAGRAM AND PIN CONFIGURATION
DG384A_MIL
Dual-In-Line D1 NC D3 S3 S4 D4 NC D2 S1 IN1 V- GND 0 5 6 7 8 Top View 12 11 10 9 NC V+ IN2 S2 1 Logic "0" v 0.8 V Logic "1" w 4 V OFF ON
1 2 3 4
16 15 14 13
TRUTH TABLE
Logic Switch
Document Number: 71679 S-04302--Rev. A, 16-Jul-01
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DG384A_MIL/387A_MIL
Vishay Siliconix
FUNCTIONAL BLOCK DIAGRAM AND PIN CONFIGURATION
DG387A_MIL
Dual-In-Line Metal Can NC NC D1 S1 IN V+ NC 1 2 3 4 5 6 7 14 13 12 11 10 9 8 NC NC D2 S2 NC V- GND IN 3 4 V+ (Substrate and Case) 5 NC Top View Top View 6 GND 7 V- S1 2 8 D1 10 1 9 NC D2
DG387A_MIL
S2
TRUTH TABLE
Logic
0 1
SW1
ON OFF Logic "0" v 0.8 V Logic "1" w 4 V
SW2
OFF ON
ORDERING INFORMATION
Temp Range DG384A_MIL
-55 to 125_C 16-Pin CerDIP DG384AAK/883 5962-9678801QEA
Package
Part Number
DG387A_MIL
-55 to 125_C _ 14-Pin CerDIP 10-Pin Metal Can DG387AAK/883 DG387AAA/883
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Document Number: 71679 S-04302--Rev. A, 16-Jul-01
DG384A_MIL/387A_MIL
Vishay Siliconix
ABSOLUTE MAXIMUM RATINGS
Voltages Referenced to V- V+ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44 V GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 V Digital Inputsa, VS, VD . . . . . . . . . . . . . . . . . . . . . . . . (V-) -2 V to (V+) +2V or 30 mA, whichever occurs first Current, Any Terminal Except S or D . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 mA Continuous Current, S or D . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 mA (Pulsed at 1 ms, 10% duty cycle max) . . . . . . . . . . . . . . . . . . . . . . . . . . 100 mA Storage Temperature (AA, AK, Suffix) . . . . . . . . . . . . . . -65 to 150_C Power Dissipationb 14-Pin CerDIPc . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 825 mW 10-Pin Metal Cand . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 450 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 welded or soldered to PC Board. c. Derate 11 mW/_C above 75_C d. Derate 6 mW/_C above 75_C
SCHEMATIC DIAGRAM (TYPICAL CHANNEL)
V+
S
V- VIN Level Shift/ Drive V+ GND D
V-
FIGURE 1.
Document Number: 71679 S-04302--Rev. A, 16-Jul-01
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DG384A_MIL/387A_MIL
Vishay Siliconix
SPECIFICATIONSa
Test Conditions Unless Specified Parameter Analog Switch
Analog Signal Rangee Drain-Source On-Resistance Source Off Leakage Current Drain Off Leakage Current Drain On Leakage Current VANALOG rDS(on) IS(off) ID(off) ID(on) VD = "10 V, IS = -10 mA VS = "14 V, VD = #14 V VS = "14 V, VD = #14 V VD = VS = "14 V Full Room Full Room Hot Room Hot Room Hot -1 -100 -1 -100 -11 -100 -15 30 "0.1 "0.1 "0.1 15 50 75 1 100 1 100 1 100 nA V W
Limits Tempb Minc Typd Maxc Unit
Symbol
V+ = 15 V, V- = -15 V VIN = 0.8 V or 4 Vf
Digital Control
Input Current with Input Voltage High Input Current with Input Voltage Low VIN = 5 V IINH VIN = 15 V IINL VIN = 0 V Room Full Room Full Room Full -1 -1 -1 -1 -0.001 0.001 -0.001 1 1 mA
Dynamic Characteristics
Turn-On Time Turn-Off Time Break-Before-Make Time Charge Injection Source-Off Capacitance Drain-Off Capacitance Channel-On Capacitance Input Capacitance Off-Isolation Crosstalk (Channel-to-Channel) tON tOFF tOPEN Q CS(off) CD(off) CD(on) CIN OIRR XTALK f = 1 MHz VIN = 0 V VIN = 15 V f = 1 MHz; VS, VD = 0 V Room See Figure 2 See Figure 3 CL = 0.01 mF, Rgen = 0 W Vgen = 0 V Room Room Room Room Room Room Room Room Room Room 150 130 50 10 14 14 40 6 7 62 74 dB pF pC 300 250 ns
VIN = 0 V, RL = 1 kW W VS = 1 Vrms, f = 500 kHz
Power Supplies
Positive Supply Current Negative Supply Current Positive Supply Current Negative Supply Current I+ I- I+ VIN = 0.8 V (All Inputs) I- VIN = 4 V (One Input) (All Others = 0) Room Full Room Full Room Full Room Full -10 -100 -10 -100 0.23 0.5 1.0 mA
-0.001 0.001 -0.001 10 100 mA
Notes: a. Refer to PROCESS OPTION FLOWCHART. b. Room = 25_C, Full = as determined by the operating temperature suffix. c. The algebraic convention whereby the most negative value is a minimum and the most positive a maximum, is used in this data sheet. d. Typical values are for DESIGN AID ONLY, not guaranteed nor subject to production testing. e. Guaranteed by design, not subject to production test. f. VIN = input voltage to perform proper function.
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Document Number: 71679 S-04302--Rev. A, 16-Jul-01
DG384A_MIL/387A_MIL
Vishay Siliconix
TYPICAL CHARACTERISTICS (25_C UNLESS NOTED)
rDS(on) vs. VD and Power Supply
100 r DS(on) Drain-Source On-Resistance ( W ) - r DS(on) Drain-Source On-Resistance ( W ) - TA = 25_C 80 "5 V 60 "7.5 V 40 "10 V "15 V 20 "20 V 60 V+ = 15 V V- = -15 V 50
rDS(on) vs. VD and Temperature
40 125_C 30 25_C 20 -55_C 10 -15 -10 -5 0 5 10 15
0
-20
-15
-10
-5
0
5
10
15
20
VD - Drain Voltage (V)
VD - Drain Voltage (V)
Charge Injection vs. Analog Voltage (VS)
50 V+ = 15 V V- = -15 V CL = 1 nF 500
Switching Time and Break-Before-Make Time vs. Positive Supply Voltage
V- = -15 V TA = 25_C VINH = 4 V VINL = 0 V tOFF 300
40
400 t ON , t OFF (ns)
30 Q (pC)
20
200
tON
10
100 tOPEN DG301/303 Only
0 -15
0 -10 -5 0 5 10 15 0 5 10 15 VS - Source Voltage (V) V+ - Positive Supply Voltage (V)
Input Switching Threshold vs. Positive Supply Voltage
5 V- = 0 to -15V TA = 25_C 4 400 500
Supply Current vs. Temperature
300 3 V T (V) I+, I- ( A) V+ = 15 V V- = -15 V VIN = 4 V (One Input) (All Other = 0 V)
I+
200
2
1
0
5 10 V+ - Positive Supply Voltage (V)
Document Number: 71679 S-04302--Rev. A, 16-Jul-01
CCCCCCCC CCCCCCCC CCCCCCCC
15
100 I- 0 -100 -55
-35
-15
5
25
45
65
85
105
125
Temperature (_C)
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DG384A_MIL/387A_MIL
Vishay Siliconix
TYPICAL CHARACTERISTICS (25_C UNLESS NOTED)
Off Isolation and Crosstalk vs. Frequency
120 15 V+ = 15 V V- = -15 V 100 Crosstalk 10 I+, I- (mA) 80 (dB) Off Isolation 60 V+ = 15 V V- = -15 V RL= 50 W
Supply Curents vs. Switching Frequency
5 +I 40
-I 0
20 10 k
100 k
1M
10 M
1k
10 k
100 k
1M
f - Frequency (Hz)
f - Frequency (Hz)
Leakage vs. Temperature
100 nA V+ = 15 V V- = -15 V VS, VD = "14 V 400 350 300 t ON t OFF (ns) , 250 200 150 100 50 10 pA -55 -35 0 -15 5 25 45 65 85 105 125 10
Switching Time vs. Power Supply Voltage
V+ = 15 V V- = -15 V
10 nA I S, I D Current
ID(on) 1 nA
tON tOFF
100 pA
ID(off) or IS(off)
12
14
16
18
20
22
Temperature (_C)
V+, V- Positive and Negative Supplies (V)
Switching Time vs. Temperature
400 r DS(on) Drain-Source On-Resistance ( W ) - 350 300 t ON t OFF (ns) , 250 200 150 100 50 0 -55 tOFF tON V+ = 15 V V- = -15 V VS = 3 V 170 150 130 110 90 70 50 30 10 -35 -15 5 25 45 65 85 105 125
rDS(on) vs. Analog and Positive Supply Voltage
V- = 0 V TA = 25_C V+ = 5 V
V+ = 10 V V+ = 15 V
0
2
4
6
8
10
12
14
Temperature (_C)
V+, V- Positive and Negative Supplies (V)
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Document Number: 71679 S-04302--Rev. A, 16-Jul-01
DG384A_MIL/387A_MIL
Vishay Siliconix
TEST CIRCUITS
+15 V Logic "1" = Switch On V+ VS = 3 V S IN 5V GND V- RL 300 W CL 33 pF VS 90% 10% 0V -15 V CL (includes fixture and stray capacitance) VO = VS RL RL + rDS(on) Switch Output tON tOFF D VO Logic Input 0V 50%
VINH
FIGURE 2. Switching Time
+15 V Logic Input D1 D2 VO2 VO1 Switch Output RL1 300 W RL2 300 W CL2 33 pF CL1 33 pF 0V VS1 VO1 0V VS2 Switch Output VO2 50% 0V tBBM 50% Logic "1" = Switch On VINH 50%
V+ VS1 = 3 V VS2 = 3 V S1 S2 IN GND V-
-15 V CL (includes fixture and stray capacitance)
FIGURE 3. Break-Before-Make SPDT (DG387A_MIL)
+15 V
Rg
V+ S IN D CL 1 nF V- VO VO
DVO
Vg 5V
INX ON OFF ON
GND
-15 V
FIGURE 4. Charge Injection
Document Number: 71679 S-04302--Rev. A, 16-Jul-01
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DG384A_MIL/387A_MIL
Vishay Siliconix
APPLICATIONS
The DG384A_MIL and DG387A_MIL will switch positive analog signals while using a single positive supply. This allows their use in applications where only one supply is available. The trade-offs or performance given up while using single supplies are: 1) increased rDS(on), 2) slower switching speed. Typical curves for aid in designing with single supplies are supplied (see Typical Characteristics). The analog voltage should not go above or below the supply voltages which in single operation are V+ and 0 V.
In the integrator of Figure 4, RD controls the discharge rate of the capacitor so that the pulsed or continuous current ratings are not exceeded. During reset SW1 is closed and SW2 is open. Opening SW2 with SW1 also open will hold the integrator output at its present value.
SW1
RD
C
Reset VIN Start/Stop SW2 R -
V O + RC
1
V IN * dt
DG381A
R
+
FIGURE 5. Integrator with Reset and Start/Stop
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Document Number: 71679 S-04302--Rev. A, 16-Jul-01
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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