DG641

DG641/642/643 Vishay Siliconix Low On-Resistance Wideband/Video Switches FEATURES D D D D D D D Wide Bandwidth: 500 MHz Low Crosstalk at 5 MHz: –85 dB Low rDS(on): 5 W , DG642 TTL Logic Compatible Fast Switching: tON 50 ns Single Supply Compatibility High Current: 100 mA, DG642 BENEFITS D D D D D D High Precision Improved Frequency Response Low Insertion Loss Improved System Performance Reduced Board Space Low Power Consumption APPLICATIONS D D D D D D D D RF and Video Switching RGB Switching Video Routing Cellular Communications ATE Radar/FLIR Systems Satellite Receivers Programmable Filters DESCRIPTION The DG641/642/643 are high performance monolithic video switches designed for switching wide bandwidth analog and digital signals. DG641 is a quad SPST, DG642 is a single SPDT, and DG643 is a dual SPDT function. These devices have exceptionally low on-resistances (5 W typ—DG642), low capacitance and high current handling capability. To achieve TTL compatibility, low channel capacitances and fast switching times, the DG641/642/643 are built on the Vishay Siliconix proprietary D/CMOS process. Each switch conducts equally well in both directions when on, and blocks up to 14 Vp-p when off. An epitaxial layer prevents latchup. FUNCTIONAL BLOCK DIAGRAM AND PIN CONFIGURATION Dual-In-Line and SOIC IN1 D1 S1 V– GND S4 D4 IN4 1 2 3 4 DG641 5 6 7 8 Top View 16 IN2 15 D2 14 S2 13 V+ 12 GND 11 S3 10 D3 9 IN3 S1 D1 V– GND 1 2 3 4 Dual-In-Line and SOIC IN1 D1 GND 8 7 6 IN S1 V+ V– D2 S...