
Gennum -> Semtech
CIRCUIT DESCRIPTION
The GX434 is a high performance low cost monolithic 4x1 video multiplexer incorporating four bipolar switches with a common output, a 2 to 4 address decoder and fast chip select circuitry. The chip select input allows for multi-chip paralleled operation in routing matrix applications. The chip is selected by applying a logic 0 on the chip select input.
FEATURES
• low differential gain: 0.03% typ. at 4.43 MHz
• low differential phase: 0.012 deg. typ. at 4.43 MHz
• low insertion loss: 0.05 dB max at 100 kHz
• low disabled power consumption: 5.2 mW typ.
• high off isolation: 110 dB at 10 MHz
• all hostile crosstalk @ 5 MHz, 97 dB typ.
• bandwidth (-3dB) with 30 pF load, 100 MHz typ.
• fast make-before-break switching: 200 ns typ.
• TTL and 5 volt CMOS compatible logic inputs
• low cost 14 pin DIP and16 pin SOIC packages
• optimised performance for NTSC, PAL and SECAM applications
APPLICATIONS
Glitch free analog switching for...
• High quality video routing
• A/D input multiplexing
• Sample and hold circuits
• TV/ CATV/ monitor switching