FUNCTIONAL BLOCK DIAGRAM

S1A

D1

S1B

IN1

IN2

S2B

D2

S2A

S3A

D3

S3B

IN3

IN4

S4B

D2

S4A

ADG333A

SWITCHES SHOWN FOR A LOGIC “1” INPUT

REV. 0

Information furnished by Analog Devices is believed to be accurate and

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

Quad SPDT Switch

ADG333A

© Analog Devices, Inc., 1995

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel: 617/329-4700

Fax: 617/326-8703

FEATURES

44 V Supply Maximum Ratings

Low On Resistance (45

max)

Low

∆R

max)

max)

Low Power Dissipation

Fast Switching Times

Low Leakage Currents (5 nA max)

Low Charge Injection (10 pC max)

Break-Before-Make Switching Action

APPLICATIONS

Audio and Video Switching

Battery Powered Systems

Test Equipment

Communication Systems

GENERAL DESCRIPTION

The ADG333A is a monolithic CMOS device comprising four

independently selectable SPDT switches. It is designed on an

LC

achieves a high switching speed and a 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,

battery powered instruments.

When they are ON, each switch conducts equally well in both

directions and has an input signal range which extends to the

power supplies. In the OFF condition, signal levels up to the

supplies are blocked. All switches exhibit break-before-make

switching action 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

process, giving an increased signal range which extends

to the supply rails.

2. Low Power Dissipation

4. Single Supply Operation

For applications where the analog signal is unipolar,

the ADG333A can be operated from a single rail power

supply. The part is fully specified with a single +12 V

supply.