DG211B, DG212B
Vishay Siliconix
Improved Quad CMOS Analog Switches
DESCRIPTION
The DG211B, DG212B analog switches are highly improved
versions of the industry-standard DG211, DG212. These
devices are fabricated in Vishay Siliconix’ proprietary silicon
gate CMOS process, resulting in lower on-resistance, lower
leakage, higher speed, and lower power consumption.
These quad single-pole single-throw switches are designed
for a wide variety of applications in telecommunications,
instrumentation, process control, computer peripherals, etc.
An improved charge injection compensation design
minimizes switching transients. The DG211B and DG212B
can handle up to ± 22 V, and have an improved continuous
current rating of 30 mA. An epitaxial layer prevents latchup.
All devices feature true bi-directional performance in the on
condition, and will block signals to the supply levels in the off
condition.
The DG211B is a normally closed switch and the DG212B is
a normally open switch. (see Truth Table.)
FEATURES
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•
•
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•
•
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± 22 V supply voltage rating
TTL and CMOS compatible logic
Low on-resistance - R
DS(on)
: 50
Low leakage - I
D(on)
: 20 pA
Single supply operation possible
Extended temperature range
Fast switching - t
ON
: 120 ns
•
Low charge injection - Q: 1 pC
BENEFITS
•
Wide analog signal range
•
•
•
•
•
Simple logic interface
Higher accuracy
Minimum transients
Reduced power consumption
Superior to DG211, DG212
•
Space savings (TSSOP)
APPLICATIONS
•
•
•
•
•
•
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Industrial instrumentation
Test equipment
Communications systems
Disk drives
Computer peripherals
Portable instruments
Sample-and-hold circuits
FUNCTIONAL BLOCK DIAGRAM AND PIN CONFIGURATION
DG211B
Dual-In-Line, SOIC and TSSOP
IN
1
D
1
S
1
V-
GND
S
4
D
4
IN
4
1
2
3
4
5
6
7
8
Top View
16
15
14
13
12
11
10
9
IN
2
D
2
S
2
V+
V
L
S
3
D
3
IN
3
TRUTH TABLE
Logic
0
1
Logic “0”
0.8
V
Logic “1”
2.4
V
DG211B
ON
OFF
DG212B
OFF
ON
* Pb containing terminations are not RoHS compliant, exemptions may apply.
Document Number: 70040
S11-0179-Rev. J, 07-Feb-11
www.vishay.com
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