CD22357A Datasheet | Intersil

Feature PCM CODEC TO SLIC [ /Title (CD22 354A, CD223 57A) /Subject (CMO S Single Chip, Full Feature PCM CODE C) / Author () /Keywords (Harris Semiconductor, RSLIC 18, Tele, SLICs, SLACs , Telephone, Telephony, WLL, Wireless Local Loop, Features - Meets or Exceeds All AT&T D3/D4 Specifications and CCITT Remendations - plete CODEC and Filtering Systems: No External ponents for Sample-and-Hold and Auto-Zero Functions. Receive Output Filter with (SIN X)/X Correction and Additional 8k Hz Suppression - Variable Data Clocks - From 64k Hz - - - - . 2.1MHz - Receiver Includes Power-Up Click Filter - TTL or CMOS-patible Logic - ESD Protection on All Inputs and Outputs Description The CD22354A and CD22357A are monolithic silicongate, double-poly CMOS integrated circuits containing the band-limiting filters and the panding A/D and D/A conversion circuits that conform to the AT&T D3/D4 specifications and CCITT remendations. The CD22354A provides the AT&T µ-law and the CD22357A provides the CCITT A-law panding characteristic. The primary applications for the CD22354A and CD22357A are in telephone systems. These circuits perform the analog and digital conversions between the subscriber loop and the PCM highway in a digital switching system. The functional block diagram is shown below. With flexible features , including synchronous and asynchronous operations and variable data rates, the CD22354A and CD22357A are ideally suited for PABX, central office switching system, digital telephones as well as other applications that require accurate A/D and D/A conversions and minimal conversion time. Applications - PABX - Central Office Switching Systems - Accurate A/D and D/A Conversions - Digital Telephones - Cellular Telephone Switching Systems - Voice Scramblers - Descramblers - T1 Conference Bridges - Voice Storage and Retrieval Systems - Sound Based Security Systems - puterized Voice Analysis - Mobile Radio Telephone Systems - Microwave Telephone...