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DG387BDJ

P1-P3P4-P6P7-P9
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
V
S
= 3 V
R
L
R
L
+ r
DS(on)
V
O
= V
S
C
L
(includes fixture and stray capacitance)
V–
V+
IN
S
C
L
33 pF
D
5 V
R
L
300 W
V
O
–15 V
GND
+15 V
50%
90%
0 V
0 V
10%
Logic
Input
Switch
Output
V
S
V
INH
t
ON
t
OFF
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
V
INH
V
S1
V
S2
V
O1
V
O2
t
BBM
V
O1
S
2
S
1
D
2
R
L2
300 W
C
L2
33 pF
V+
V
O2
V
S2
= 3 V
IN
V
S1
= 3 V
R
L1
300 W
C
L1
33 pF
C
L
(includes fixture and stray capacitance)
V–
D
1
–15 V
GND
+15 V
FIGURE 4. Charge Injection
ON OFF ON
IN
X
V
O
DV
O
C
L
1 nF
5 V
V–
–15 V
V
O
GND
V+
R
g
S
V
g
D
IN
+15 V
DG381B/384B/387B/390B
Vishay Siliconix
www.vishay.com
8
Document 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 r
DS(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, R
D
controls the discharge rate of
the capacitor so that the pulsed or continuous current ratings
are not exceeded. During reset SW
1
is closed and SW
2
is
open. Opening SW
2
with SW
1
also open will hold the integrator
output at its present value.
–
+
DG381B
Reset
V
IN
Start/Stop
SW
1
SW
2
R
D
C
R
R
V
O
+
1
RC
ŕ
V
IN
·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.
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(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
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Product names and markings noted herein may be trademarks of their respective owners.
P1-P3P4-P6P7-P9

DG387BDJ

Mfr. #:
Buy DG387BDJ
Manufacturer:
Vishay / Siliconix
Description:
Analog Switch ICs RECOMMENDED ALT 781-DG387BDJ-E3
Lifecycle:
New from this manufacturer.
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