DATA SHEET
MOS INTEGRATED CIRCUIT
µ
PD9903
µ
PD9903 ANALOG SUBSCRIBER LINE LSI (DIGITAL CODEC)
The
µ
PD9903 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
µ
PD9903 in combination with a BS-SLIC (
µ
PC7073) 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
Package
48-pin plastic shrink SOP (375 mil)
µ
PD9903GT
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.
©
1996
NEC [ NEC ]
