TP3067BDW

整体式串行接口联合PCM编解码器和过滤器 MONOLITHIC SERIAL INTERFACE COMBINED PCM CODEC AND FILTER

description

The TP3064B, TP3067B, TP13064B, and TP13067B each comprise a single-chip pulse code-modulation encoder and decoder PCM codec, and PCM line filter. They also provide band-pass filtering of the analog signals prior to the encoding, and low-pass filtering after the decoding of voice signals and call-progress tones. All the functions required to interface a full-duplex 2-wire voice telephone circuit with a time-division-multiplexed TDM system are included on-chip. These devices are pin-for-pin compatible

Complete PCM Codec and Filtering Systems Include:

– Transmit High-Pass and Low-Pass Filtering

– Receive Low-Pass Filter With sin x/x Correction

– Active RC Noise Filters

– µ-Law or A-Law Compatible Coder and Decoder

– Internal Precision Voltage Reference

– Serial I/O Interface

– Internal Autozero Circuitry

µ-Law – TP13064B and TP3064B

A-Law – TP13067B and TP3067B

±5-V Operation

Low Operating Power...70 mW Typ

Power-Down Standby Mode...3mW Typ

Automatic Power Down

TTL- or CMOS-Compatible Digital Interface

Maximizes Line Interface Card Circuit Density

Improved Versions of National

Semiconductor TP3064, TP3067, TP3064-X, and TP3067-X