ETC5057D

串行接口编解码器/过滤器 SERIAL INTERFACE CODEC/FILTER

DESCRIPTION

The ETC5057/ETC5054 family consists of A-law and µ–law monolithic PCM CODEC/filters utilizing the A/D and D/A conversion architecture shown in the block diagram below, and a serial PCM interface. The devices are fabricated using double poly CMOS process.

COMPLETE CODEC AND FILTERING SYSTEM DEVICE INCLUDING:

– 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 auto-zero circuitry.

A-LAW 16 PINS ETC5057FN, 20 PINS

µ-LAW WITHOUT SIGNALING, 16 PINS ETC5054FN, 20 PINS

MEETS OR EXCEEDS ALL D3/D4 AND CCITT SPECIFICATIONS

±5V OPERATION

LOW OPERATING POWER - TYPICALLY 60mW

POWER-DOWN STANDBY MODE - TYPICALLY 3 mW

AUTOMATIC POWER-DOWN

TTL OR CMOS COMPATIBLE DIGITAL IN TERFACES

MAXIMIZES LINE INTERFACE CARD CIRCUIT DENSITY

0 to 70°C OPERATION