Vishay Siliconix
DG211B, DG212B
Document Number: 70040
S11-0179-Rev. J, 07-Feb-11
www.vishay.com
1
Improved Quad CMOS Analog Switches
FEATURES
• ± 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
• Industrial instrumentation
• Test equipment
• Communications systems
• Disk drives
• Computer peripherals
• Portable instruments
• Sample-and-hold circuits
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.)
FUNCTIONAL BLOCK DIAGRAM AND PIN CONFIGURATION
Logic “0” 0.8 V
Logic “1” 2.4 V
* Pb containing terminations are not RoHS compliant, exemptions may apply.
IN
1
IN
2
D
1
D
2
S
1
S
2
V- V+
GND V
L
S
4
S
3
D
4
D
3
IN
4
IN
3
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
Top View
DG211B
Dual-In-Line, SOIC and TSSOP
TRUTH TABLE
Logic DG211B DG212B
0 ON OFF
1OFFON
