Datasheet > AM7924SC

AM7924SC

更新时间： 2024-11-26 23:29:55

品牌	Logo	应用领域
其他 - ETC		电池电信集成电路光电二极管
页数	文件大小	规格书
20页	283K
描述
Telecommunication IC

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中文翻译

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数据手册

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AM7924SC 数据手册

Am7924

Subscriber Line Interface Circuit

DISTINCTIVE CHARACTERISTICS

Control states: Active and Ringing

–19 V to –58 V battery operation

On-hook transmission

Programmable constant-current feed

Programmable loop-detect threshold

Programmable ring-trip detect threshold

Current gain = 500

Two-wire impedance set by single external

impedance

On-chip Thermal Management (TMG) feature

No –5 V supply required

Fault detectors

Three on-chip relay drivers and relay snubbers,

one ringing and two general purpose

BLOCK DIAGRAM

TMG

ACO

Fault Detector

ALM

Relay Driver

RYOUT2

RYOUT1

RINGOUT

Ring Relay Driver

Input Decoder

and Control

A(TIP)

HPA

OHT

RING

DET

Two-Wire Interface

HPB

VTX

RSN

Signal Transmission

Off-Hook Detector

B(RING)

Power-Feed Controller

Ring-Trip Detector

RDC

CAS

VBAT

BGND

VCC VBREF AGND/DGND

Publication# 080197 Rev: C Amendment: /0

Issue Date: October 1999

12 3 4 5 6 7...20

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