FUNCTIONAL BLOCK DIAGRAM
S1A
D1
S1B
IN1
S2A
D2
S2B
IN2
ADG436
REV. A
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reliable. However, no responsibility is assumed by Analog Devices for its
use, nor for any infringements of patents or other rights of third parties
which may result from its use. No license is granted by implication or
otherwise under any patent or patent rights of Analog Devices.
a
Dual SPDT Switch
ADG436
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700 World Wide Web Site: http://www.analog.com
Fax: 781/326-8703 © Analog Devices, Inc., 1998
FEATURES
44 V Supply Maximum Ratings
V
SS
to V
DD
Analog Signal Range
Low On Resistance (12 V Typ)
Low DR
ON
(3 V Max)
Low R
ON
Match (2.5 V Max)
Low Power Dissipation
Fast Switching Times
t
ON
< 175 ns
t
OFF
< 145 ns
Low Leakage Currents (5 nA Max)
Low Charge Injection (10 pC)
Break-Before-Make Switching Action
APPLICATIONS
Audio and Video Switching
Battery Powered Systems
Test Equipment
Communications Systems
GENERAL DESCRIPTION
The ADG436 is a monolithic CMOS device comprising two
independently selectable SPDT switches. It is designed on an
LC
2
MOS process which provides low power dissipation yet
gives high switching speed and low on resistance.
The on resistance profile is very flat over the full analog input
range ensuring good linearity and low distortion when switching
audio signals. High switching speed also makes the part suitable
for video signal switching. CMOS construction ensures ultralow
power dissipation making the part ideally suited for portable and
battery powered instruments.
Each switch conducts equally well in both directions when ON
and has an input signal range which extends to the power sup-
plies. In the OFF condition, signal levels up to the supplies are
blocked. All switches exhibit break-before-make switching ac-
tion for use in multiplexer applications. Inherent in the design is
low charge injection for minimum transients when switching the
digital inputs.
PRODUCT HIGHLIGHTS
1. Extended Signal Range
The ADG436 is fabricated on an enhanced LC
2
MOS pro-
cess, giving an increased signal range which extends to the
supply rails.
2. Low Power Dissipation
3. Low R
ON
4. Single Supply Operation
For applications where the analog signal is unipolar, the
ADG436 can be operated from a single rail power supply.