a
Dual SPDT Switch
ADG436
FUNCTIONAL BLOCK DIAGRAM
FEATURES
44 V Supply Maximum Ratings
VSS to VDD Analog Signal Range
Low On Resistance (12 ⍀ Typ)
Low ⌬RON (3 ⍀ Max)
Low RON Match (2.5 ⍀ Max)
Low Power Dissipation
Fast Switching Times
S2A
S1A
D1
D2
S1B
S2B
t
ON < 175 ns
tOFF < 145 ns
Low Leakage Currents (5 nA Max)
Low Charge Injection (10 pC)
Break-Before-Make Switching Action
IN2
IN1
ADG436
APPLICATIONS
Audio and Video Switching
Battery Powered Systems
Test Equipment
Communications Systems
GENERAL DESCRIPTION
PRODUCT HIGHLIGHTS
The ADG436 is a monolithic CMOS device comprising two
independently selectable SPDT switches. It is designed on an
LC2MOS process which provides low power dissipation yet
gives high switching speed and low on resistance.
1. Extended Signal Range
The ADG436 is fabricated on an enhanced LC2MOS pro-
cess, giving an increased signal range which extends to the
supply rails.
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.
2. Low Power Dissipation
3. Low RON
4. Single Supply Operation
For applications where the analog signal is unipolar, the
ADG436 can be operated from a single rail power supply.
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.
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.
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© Analog Devices, Inc., 1998