UPD9903 Datasheet, PDF (1/28 Pages) NEC – UPD9903 ANALOG SUBSCRIBER LINE LSI DIGITAL CODEC

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. It features three of the functions required for analog subscriber
circuits: 2W/4W conversion, CODEC supervision, and subscriber line supervision.
Use of the µPD9903 in combination with a BS-SLIC (µPC7073) can reduce the number of components required
in analog subscriber circuits.
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
• Ring-Trip function
• Single power supply (+5 V)
• Low power consumption during standby mode: 20 mW (TYP.)
ORDERING INFORMATION
Part Number
µPD9903GT
Package
48-pin plastic shrink SOP (375 mil)
The information in this document is subject to change without notice.
Document No. S10897EJ3V0DS00 (3rd edition)
The mark shows major revised points.
Date Published June 1997 N
Printed in Japan
©
1996