features

 Constant On-Resistance Over

Entire Analog Range

 Low Leakage

 Low Crosstalk

 Break-Before-Make Switching

 Rad Hardness

benefits

 Low Distortion

 Eliminates Large Signal Errors

 High Precision

 Improved Channel Isolation

 Eliminates Inadvertent Shorting

Between Channels

 Fault Protection

applications

 Audio Switching

 Precision Switching

 Video Switching

 Video Routing

 Sample/Hold

 Aerospace

description

The DG183/184/185 are precision dual double-pole,

single-throw (DPST) analog switches designed to provide

accurate switching of video and audio signals. This series is

ideally suited for applications requiring a constant

on-resistance over the entire analog range.

The major difference in the devices is the on-resistance

(DG183—10 , DG184—30 , DG185—75  Reduced

errors are achieved through low leakage current (ID(on)

< 2 nA). Applications which benefit from the flat JFET

on-resistance include audio switching, video switching, and

data acquisition.

To achieve fast and accurate switch performance, each device

comprises four n-channel JFET transistors and a TTL

compatible bipolar driver. In the on state, each switch conducts

current equally well in either direction. In the off condition, the

switches will block up to 20 V peak-to-peak, with feedthrough

of less than –60 dB at 10 MHz.