©

1996

DATA SHEET

MOS INTEGRATED CIRCUIT

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

→ oversampling-type A/D and D/A converters

•

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

Package

µPD9903GT

48-pin plastic shrink SOP (375 mil)

µPD9903 ANALOG SUBSCRIBER LINE LSI (DIGITAL CODEC)

The information in this document is subject to change without notice.

Document No. S10897EJ3V0DS00 (3rd edition)

Date Published June 1997 N

Printed in Japan

The mark

shows major revised points.