DESCRIPTION
The ETC5064 (µ-law), ETC5067 (A-law) are monolithic PCM CODEC/FILTERS utilizing the A/D and D/Aconversion architectureshown in the BlockDiagrams and a serial PCM interface. The devices are fabricated using double-polyCMOS process.

■ COMPLETE CODEC AND FILTERING SYSTEM INCLUDING :
   - Transmit high-pass and low-pass filtering.
   - Receive low-pass filter with sin x/x correction.
   - Active RC noise filter.
   - µ-law or A-law compatible CODER and DECODER.
   - Internal precision voltage reference.
   - Serial I/O interface.
   - Internal auto-zero circuitry.
   - Receive push-pull power amplifiers.
■ µ-LAW ETC5064
■ A-LAW ETC5067
■ MEETS OR EXCEEDS ALL D3/D4 AND CCITT SPECIFICATIONS.
■ ± 5 V OPERATION.
■ LOW OPERATING POWER-TYPICALLY 70 mW
■ POWER-DOWN STANDBY MODE-TYPICALLY 3 mW
■ AUTOMATIC POWER DOWN
■ TTL OR CMOS COMPATIBLE DIGITAL INTERFACES
■ MAXIMIZES LINE INTERFACE CARD CIRCUIT DENSITY
■ 0°C TO 70°C OPERATION: ETC5064/67
■ –40°C TO 85°C OPERATION: ETC5064-X/67-X