器件名称:
GX4201
功能描述:
Wideband, Monolithic 1x1 Video Crosspoint Switch
文件大小:
156.01KB 共6页
简 介:
GX4201 Wideband, Monolithic 1x1 Video Crosspoint Switch DATA SHEET FEATURES -3 dB bandwidth, 300 MHz with CL = 0 pF off isolation at 100 MHz, 80 dB differential phase and gain at 4.43 MHz, 0.01° & 0.02% 800 W disabled power consumption input signal levels from -2 V to +3 V logic input compatible with TTL and 5 V CMOS open collector TALLY output FUNCTIONAL BLOCK DIAGRAM TALLY CIRCUIT DESCRIPTION The GX4201 is a wideband 1x1 video crosspoint implemented in bipolar monolithic technology. The device is characterized by excellent differential gain and phase in the enabled state, and very high off-isolation in the disabled state. The fully buffered unilateral signal path ensures negligible output to input feedback while delivering minimal output switching transients through make-before-break switching. For use in NxM routing matrices, the device features a very high, nearly constant input impedance, coupled with very high output impedance in the disabled state. This allows multiple GX4201's to be paralleled at the input and output without additional circuitry. An open collector PNP to VCC TALLY output provides indication of crosspoint selection. To maximize system bandwidth, an external current source is used to bias the output device of the crosspoint. One external current source is required per output bus. For less demanding applications, a load resistor can be used in place of the output current source, causing a slight increase in differential phase. Non-additive mixing……
