MV3506

www.DataSheet4U.net THIS DOCUMENT IS FOR MAINTENANCE PURPOSES ONLY AND IS NOT RECOMMENDED FOR NEW DESIGNS MV3506/7/8 ADVANCE INFORMATION DS3133-2.1 MV3506 MV3507 MV3508 A-LAW FILTER/CODEC µ-LAW FILTER/CODEC A-LAW FILTER/CODEC WITH OPTIONAL SQUELCH These devices are silicon gate CMOS Companding Encoder/Decoder integrated circuits designed to implement the per channel voice frequency Codecs used in PCM systems. They contain the band-limiting filters and the analog to digital conversion circuits that conform to the desired transfer characteristic. The MV3506 and MV3508 provide the European A-Law companding and the MV3507 provides the North American µ -Law companding characteristic. The MV3508 has programmable squelch circuitry to reduce idle channel noise. These circuits provide the interface between the analog signals of the subscriber loop and digital signals of the PCM highway in a digital telephone switching system. The devices operate from dual power supplies of ±5V. TST/SE CLK SEL T SHIFT SYS CLK T STROBE PCM OUT D GND CAZ R SHIFT R STROBE PCM IN 1 2 3 4 5 6 7 8 9 10 11 22 21 20 19 VDD VOUT OUTFLT OUT PDB VIN ININ+ CAZ GND A GND VSS MV3506/ 17 7/8 16 15 14 13 12 18 FEATURES s Low Power CMOS 80mW (Operating) 10mW (Standby) s Meets or Exceeds AT & T3, and CCITT G.711, G.712 and G.733 Specifications s Input Analog Filter Eliminates Need for External Antialiasing Prefilter s Uncommitted Input and Output Op. Amps for Programming Gain s Output Op. Amp Provides ±3.1V...