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TP3054 - CODEC/Filter COMBO

Datasheet Summary

Description

The TP3054 TP3057 family consists of m-law and A-law monolithic PCM CODEC filters utilizing the A D and D A conversion architecture shown in Figure 1 and a serial PCM interface The devices are fabricated using National’s advanced double-poly CMOS process (microCMOS) The encode portion of each device

Features

  • Y Complete CODEC and filtering system (COMBO) including Transmit high-pass and low-pass filtering Receive low-pass filter with sin x x correction Active RC noise filters m-law or A-law compatible COder and DECoder Internal precision voltage reference Serial I O interface Internal auto-zero circuitry Y m-law 16-pin TP3054 Y A-law 16-pin TP3057 Y Designed for D3 D4 and CCITT.

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TP3054 TP3057 ‘‘Enhanced’’ Serial Interface CODEC Filter COMBO Family August 1994 TP3054 TP3057 ‘‘Enhanced’’ Serial Interface CODEC Filter COMBO Family General Description The TP3054 TP3057 family consists of m-law and A-law monolithic PCM CODEC filters utilizing the A D and D A conversion architecture shown in Figure 1 and a serial PCM interface The devices are fabricated using National’s advanced double-poly CMOS process (microCMOS) The encode portion of each device consists of an input gain adjust amplifier an active RC pre-filter which eliminates very high frequency noise prior to entering a switched-capacitor band-pass filter that rejects signals below 200 Hz and above 3400 Hz Also included are auto-zero circuitry and a companding coder which samples the filtered signal and encodes
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