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參數資料
| 型號： | UPD9903 |
| 廠商： | NEC Corp. |
| 元件分類： | Codec |
| 英文描述： | UPD9903 ANALOG SUBSCRIBER LINE LSI DIGITAL CODEC |
| 中文描述： | UPD9903模擬用戶線數字編解碼器大規模集成電路 |
| 文件頁數： | 1/28頁 |
| 文件大小： | 135K |
| 代理商： | UPD9903 |
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1996
DATA SHEET
MOS INTEGRATED CIRCUIT
μ
PD9903
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
μ
PD9903GT
Package
48-pin plastic shrink SOP (375 mil)
μ
PD9903 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.
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