*Common to Substrate and Case

Refer to JAN38510 Information, Military Section

NC

Dual-In-Line

V–

V+

NC

1

2

3

4

5

6

7

8

16

15

14

13

12

11

10

9

Top View

Flat

Package

V+

V–*

1

2

3

4

5

6

7

14

13

12

11

10

9

8

Top View

DG183/184/185

Siliconix

S-52895—Rev. D, 16-Jun-97

1

High-Speed Drivers with Dual DPST JFET Switches

Features

Benefits

Applications

D Constant On-Resistance Over

Entire Analog Range

D Low Leakage

D Low Crosstalk

D Break-Before-Make Switching

D Rad Hardness

D Low Distortion

D Eliminates Large Signal Errors

D High Precision

D Improved Channel Isolation

D Eliminates Inadvertent Shorting

Between Channels

D Fault Protection

D Audio Switching

D Precision Switching

D Video Switching

D Video Routing

D Sample/Hold

D 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

W, DG184—30 W, DG185—75 W). Reduced

< 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.

Functional Block Diagram and Pin Configuration

Truth Table

Logic

Switch

0

OFF

1

ON

Logic “0”

v 0.8 V

Logic 0

v 0.8 V

Logic “1”

w 20V

Logic “1”

w 2.0 V

Updates to this data sheet may be obtained via facsimile by calling Siliconix FaxBack, 1-408-970-5600. Please request FaxBack document #70032.