UPD9903 Description
DATA SHEET MOS INTEGRATED CIRCUIT µPD9903 µPD9903 ANALOG SUBSCRIBER LINE LSI (DIGITAL CODEC) The µPD9903 is a digital CODEC that can be used in analog subscriber circuits such as private branch exchangers (PBXs) and switching equipment for central offices.
UPD9903 Key Features
- Single-chip monolithic LSI (CMOS)
- PCM CODEC → oversampling-type A/D and D/A converters
- Programmable functions
- Termination impedance
- Hybrid balance network
- Feed resistance
- Feed current
- PAD control
- A-law and µ-law
- Digital gain set function