S1S2
D1D2
NC NC
NC NC
IN1
V–
V+
IN2
NC GND
Plastic Dip
1
2
3
4
5
6
7
14
13
12
11
10
9
8
Top View
DG381B
DG381B/384B/387B/390B
Vishay Siliconix
Document Number: 71404
S-02968—Rev. A, 22-Jan-01 www.vishay.com
1
CMOS Analog Switches
FEATURES BENEFITS APPLICATIONS
D"15-V Input Range
DLow rDS(on): 30 W
DSingle Supply Operation
DPin and Function Compatible with the
JFET DG180 Family
DFull Rail-to-Rail Analog Signal Range
DMinimizes Signal Error
DLow Power Dissipation
DLow Level Switching Circuits
DProgrammable Gain Amplifiers
DPortable and Battery Powered
Sytems
DESCRIPTION
The DG381B–DG390B series of monolithic CMOS analog
switches was 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.
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
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.
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
TRUTH TABLE
Logic Switch
0 ON
1 OFF
Logic “0” v 0.8 V
Logic “1” w 4 V
DG384B
D1S1
NC
Dual-In-Line
IN1
D3V–
S3GND
S4NC
D4V+
NC IN2
D2S2
Top View
DG387B
S2
NC
IN
NC
NC
V–
V+
NC
D1
NC
D2
NC
S1
GND
Dual-In-Line
Top View
1
2
3
4
5
6
7
14
13
12
11
10
9
8
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
DG390B
D1S1
NC
Dual-In-Line
IN1
D3V–
S3GND
S4NC
D4V+
NC IN2
D2S2
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
Top View
DG381B/384B/387B/390B
Vishay Siliconix
www.vishay.com
2Document Number: 71404
S-02968—Rev. A, 22-Jan-01
FUNCTIONAL BLOCK DIAGRAM AND PIN CONFIGURATION
TRUTH TABLE
Logic Switch
0 OFF
1 ON
Logic “0” v 0.8 V
Logic “1” w 4 V
TRUTH TABLE
Logic SW1SW2
0 ON OFF
1 OFF ON
Logic “0” v 0.8 V
Logic “1” w 4 V
TRUTH TABLE
Logic SW1, SW2SW3, SW4
0 OFF ON
1 ON OFF
Logic “0” v 0.8 V
Logic “1” w 4 V
DG381B/384B/387B/390B
Vishay Siliconix
Document Number: 71404
S-02968—Rev. A, 22-Jan-01 www.vishay.com
3
ORDERING INFORMATION
Temp Range Package Part Number
DG381B
–40 to 85_C14-Pin Plastic DIP DG381BDJ
DG384B
–40 to 85_C16-Pin Plastic DIP DG384BDJ
DG387B
–40 to 85_C14-Pin Plastic DIP DG387BDJ
DG390B
–40 to 85_C16-Pin Plastic DIP DG390BDJ
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 –65 to 150_C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Dissipationb
14-Pin Plastic DIPd470 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 6.5 mW/_C above 25_C
SCHEMATIC DIAGRAM (TYPICAL CHANNEL)
FIGURE 1.
Level
Shift/
Drive
VIN
S
V+
GND
V–
D
V–
V+
DG381B/384B/387B/390B
Vishay Siliconix
www.vishay.com
4Document Number: 71404
S-02968—Rev. A, 22-Jan-01
SPECIFICATIONSa
Test Conditions Unless Specified Limits
–40 to 85_C
Parameter Symbol V+ = 15 V, V– = –15 V
VIN = 0.8 V or 4 VfTempbMindTypcMaxdUnit
Analog Switch
Analog Signal RangeeVANALOG Full –15 15 V
Drain-Source
On-Resistance rDS(on) VD = "10 V, IS = –10 mA Room
Full 30 50
75 W
Source Off
Leakage Current IS(off) VS = "14 V, VD = #14 V Room
Hot –5
–100 "0.1 5
100
Drain Off
Leakage Current ID(off) VS = "14 V, VD = #14 V Room
Hot –5
–100 "0.1 5
100 nA
Drain On
Leakage Current ID(on) VD = VS = "14 V Room
Hot –5
–100 "0.1 5
100
Digital Control
Input Current with VIN = 5 V Room
Full –1–0.001
Input Current with
Input Voltage High IINH VIN = 15 V Room
Full 0.001 1 mA
Input Current with
Input Voltage Low IINL VIN = 0 V Room
Full –1–0.001
Dynamic Characteristics
Turn-On Time tON Room 150
Turn-Off Time tOFF See Figure 2 Room 130 ns
Break-Before-Make Time tOPEN See Figure 3 Room 50
Charge Injection QCL = 0.01 mF, Rgen = 0 W Vgen = 0 V Room 10 pC
Source-Off Capacitance CS(off) Room 14
Drain-Off Capacitance CD(off) f = 1 MHz; VS, VD = 0 V Room 14
Channel-On Capacitance CD(on)
S D Room 40 pF
VIN = 0 V Room 6
Input Capacitance CIN f = 1 MHz VIN = 15 V Room 7
Off-Isolation OIRR
W
Room 62
Crosstalk
(Channel-to-Channel) XTALK
VIN = 0 V, RL = 1 kW
VS = 1 Vrms, f = 500 kHz Room 74 dB
Power Supplies
Positive Supply Current I+ VIN = 4 V (One Input) Room
Full 0.23 1 mA
Negative Supply Current I–
VIN = 4 V (One Input)
(All Others = 0) Room
Full –100 –0.001
Positive Supply Current I+ Room
Full 0.001 100 mA
Negative Supply Current I–VIN = 0.8 V (All Inputs) Room
Full –100 –0.001
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.
DG381B/384B/387B/390B
Vishay Siliconix
Document Number: 71404
S-02968—Rev. A, 22-Jan-01 www.vishay.com
5
TYPICAL CHARACTERISTICS (25_C UNLESS NOTED)
rDS(on)
– Drain-Source On-Resistance ( )W
rDS(on) vs. VD and Power Supply
100
–20 –15 –10 –505101520
80
60
40
20
0
60
–15 –10 –50 51015
50
40
30
20
10
V+ = 15 V
V– = –15 V
125_C
rDS(on) vs. VD and Temperature
50
–15 –10 –5051015
40
30
20
10
0
Q (pC)
V+ = 15 V
V– = –15 V
CL = 1 nF
Charge Injection vs. Analog Voltage (VS) 500
0 5 10 15
400
300
200
100
0
Switching Time and Break-Before-Make
Time vs. Positive Supply Voltage
V+ – Positive Supply Voltage (V)
tON (ns), tOFF
V– = –15 V
TA = 25_C
VINH = 4 V
VINL = 0 V
ÇÇÇÇÇÇÇÇ
ÇÇÇÇÇÇÇÇ
ÇÇÇÇÇÇÇÇ
ÇÇÇÇÇÇÇÇ
0
5
4
3
2
1
51015
V+ – Positive Supply Voltage (V)
Input Switching Threshold
vs. Positive Supply Voltage
(V)
T
V
V– = 0 to –15V
TA = 25_C
–55 –35 –15 5 25 45 65 85 105 125
500
400
300
200
100
0
–100
Supply Current vs. Temperature
Temperature (_C)
I+, I–(A)
I+
I–
"5 V
"7.5 V
"10 V
"15 V
"20 V
25_C
–55_C
rDS(on)
– Drain-Source On-Resistance ( )W
TA = 25_C
DG301/303 Only
tOPEN
tOFF
tON
V+ = 15 V
V– = –15 V
VIN = 4 V (One Input)
(All Other = 0 V)
VS – Source Voltage (V)
VD – Drain Voltage (V) VD – Drain Voltage (V)
DG381B/384B/387B/390B
Vishay Siliconix
www.vishay.com
6Document Number: 71404
S-02968—Rev. A, 22-Jan-01
TYPICAL CHARACTERISTICS (25_C UNLESS NOTED)
Leakage vs. Temperature Switching Time vs. Power Supply Voltage
Off Isolation and Crosstalk vs. Frequency Supply Curents vs. Switching Frequency
f – Frequency (Hz) f – Frequency (Hz)
Temperature (_C) V+, V– Positive and Negative Supplies (V)
(dB)
I+, I– (mA)(ns)tON
,t
OFF
–55 –35 –15 5 25 45 65 85 105 125
10 pA
100 pA
1 nA
10 nA
120
2010 k 100 k 1 M 10 M
100
80
60
40
15
0
5
10
1 k 10 k 100 k 1 M
10
400
350
300
250
200
150
100
50
012 14 16 18 20 22
V+ = 15 V
V– = –15 V
tOFF
tON
Switching Time vs. Temperature
Temperature (_C)
(ns)tON
,t
OFF
–55
400
350
300
250
200
150
100
50
–35 –15 5 25 45 65 85 105 125
0
170
150
130
110
90
70
50
30
10 02468101214
rDS(on) vs. Analog and Positive Supply Voltage
V+, V– Positive and Negative Supplies (V)
rDS(on)
– Drain-Source On-Resistance ( )W
100 nA
CurrentI, I
SD
–I
+I
V+ = 15 V
V– = –15 V
V+ = 15 V
V– = –15 V
VS, VD = "14 V
ID(on)
ID(off) or IS(off)
tOFF
tON
V+ = 15 V
V– = –15 V
VS = 3 V V+ = 5 V
V+ = 10 V
V+ = 15 V
V– = 0 V
TA = 25_C
V+ = 15 V
V– = –15 V
RL= 50 W
Off Isolation
Crosstalk
DG381B/384B/387B/390B
Vishay Siliconix
Document Number: 71404
S-02968—Rev. A, 22-Jan-01 www.vishay.com
7
TEST CIRCUITS
FIGURE 2. Switching Time
VS = 3 V
RL
RL + rDS(on)
VO = VS
CL (includes fixture and stray capacitance)
V–
V+
IN
S
CL
33 pF
D
5 V RL
300 W
VO
–15 V
GND
+15 V
50%
90%
0 V
0 V
10%
Logic
Input
Switch
Output
VS
VINH
tON tOFF
Logic “1” = Switch On
FIGURE 3. Break-Before-Make SPDT (DG387B, DG390B)
0 V
50%
50%
50%
0 V
0 V
Logic
Input
Switch
Output
Switch
Output
Logic “1” = Switch On
VINH
VS1
VS2
VO1
VO2
tBBM
VO1
S2
S1
D2
RL2
300 WCL2
33 pF
V+
VO2
VS2 = 3 V
IN
VS1 = 3 V
RL1
300 WCL1
33 pF
CL (includes fixture and stray capacitance)
V–
D1
–15 V
GND
+15 V
FIGURE 4. Charge Injection
ON OFF ON
INX
VO
DVO
CL
1 nF
5 V V–
–15 V
VO
GND
V+
RgS
Vg
D
IN
+15 V
DG381B/384B/387B/390B
Vishay Siliconix
www.vishay.com
8Document Number: 71404
S-02968—Rev. A, 22-Jan-01
APPLICATIONS
The DG381B series of analog switches 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. Ope n i n g S W 2 with SW1 also open will hold the integrator
output at its present value.
–
+
DG381B
Reset
VIN
Start/Stop
SW1
SW2
RDC
R
R
VO+1
RC ŕVIN ·Ădt
FIGURE 5. Integrator with Reset and Start/Stop
Document Number: 91000 www.vishay.com
Revision: 18-Jul-08 1
Disclaimer
Legal Disclaimer Notice
Vishay
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.
