DG308B_11 Datasheet, PDF (1/15 Pages) Vishay Siliconix – Improved Quad CMOS Analog Switches

DG308B, DG309B
Vishay Siliconix
Improved Quad CMOS Analog Switches
DESCRIPTION
The DG308B, DG309B analog switches are highly improved
versions of the industry-standard DG308A, DG309. 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 DG308B and DG309B
can handle up to ± 22 V input signals. 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 DG308B is a normally open switch and the DG309B is
a normally closed switch. (see Truth Table.)
FEATURES
• ± 22 V supply voltage rating
• CMOS compatible logic
• Low on-resistance - R_DS(on): 45 
• Low leakage - I_D(on): 20 pA
• Single supply operation possible
• Extended temperature range
• Fast switching - t_ON: < 200 ns
• Low glitching - Q: 1 pC
BENEFITS
• Wide analog signal range
• Simple logic interface
• Higher accuracy
• Minimum transients
• Reduced power consumption
• Superior to DG308A, DG309
• Space savings (TSSOP)
APPLICATIONS
• Industrial instrumentation
• Test equipment
• Communications systems
• Disk drives
• Computer peripherals
• Portable instruments
• Sample-and-hold circuits
FUNCTIONAL BLOCK DIAGRAM AND PIN CONFIGURATION
DG308B
Dual-In-Line, SOIC and TSSOP
IN_{1 1}
D₁
2
S₁
3
V-
4
GND
5
S₄
6
D₄
7
IN_{4 8}
16 ^IN2
15 ^D2
14 ^S2
V+
13
NC
12
11 ^S3
10 ^D3
9
IN₃
TRUTH TABLE
Logic
0
1
Logic “0” 3.5 V
Logic “1” 11 V
DG308B
OFF
ON
Top View
* Pb containing terminations are not RoHS compliant, exemptions may apply
Document Number: 70047
S11-0303-Rev. G, 28-Feb-11
DG309B
ON
OFF
www.vishay.com
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