低导通电阻宽带/视频开关 Low On-Resistance Wideband/Video Switches
DESCRIPTION
The DG641, DG642, DG643 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 Ω typ-DG642, low capacitance and high current handling capability.
To achieve TTL compatibility, low channel capacitances and fast switching times, the DG641, DG642, DG643 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.
FEATURES
• Wide bandwidth: 500 MHz
• Low crosstalk at 5 MHz: - 85 dB
• Low RDSon: 5 Ω, DG642
• TTL logic compatible
• Fast switching: tON 50 ns
• Single supply compatibility
• High current: 100 mA, DG642
BENEFITS
• High precision
• Improved frequency response
• Low insertion loss
• Improved system performance
• Reduced board space
• Low power consumption
APPLICATIONS
• RF and video switching
• RGB switching
• Video routing
• Cellular communications
• ATE
• Radar/FLIR systems
• Satellite receivers
• Programmable filters