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
