DG183

DG183/184/185 Vishay Siliconix High-Speed Drivers and Dual DPST JFET Switches FEATURES D Constant On-Resistance Over Entire Analog Range D Low Leakage D Low Crosstalk D Break-Before-Make Switching D Rad Hardness BENEFITS D D D D D Low Distortion Eliminates Large Signal Errors High Precision Improved Channel Isolation Eliminates Inadvertent Shorting Between Channels D Fault Protection APPLICATIONS D D D D D D 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. on-resistance include audio switching, video switching, and data acquisition. The major difference in the devices is the on-resistance (DG183—10 W , DG184—30 W , DG185—75 W). Reduced errors are achieved through low leakage current (ID(on) < 2 nA). Applications which benefit from the flat JFET 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 D1 NC D3 S3 S4 D4 NC D2 1 2 3 4 5 ...