Datasheet > AM7943-1JC

AM7943-1JC

更新时间： 2024-10-27 23:29:55

品牌	Logo	应用领域
其他 - ETC		电信
页数	文件大小	规格书
20页	282K
描述
Telecommunication IC

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中文翻译

获取价格

数据手册

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AM7943-1JC 数据手册

Am7943

Subscriber Line Interface Circuit

DISTINCTIVE CHARACTERISTICS

Programmable constant-current feed

Current gain = 200

–19 V to –58 V battery operation

Two-wire impedance set by single external

impedance

Programmable loop-detect threshold

Low power Standby state

On-hook transmission

On-chip ring relay driver and relay snubber

circuit

Performs polarity reversal

Ground-key detector

On-chip Thermal Management (TMG) feature

Ideal for DLC and PABX applications

Tip Open state for ground-start lines

BLOCK DIAGRAM

TMG

Ring Relay

Driver

RINGOUT

A(TIP)

Input

Decoder

Ground-Key

Detector

and Control

HPA

Two-Wire

Interface

DET

RSN

VTX

Signal

Transmission

HPB

Off-Hook

Detector

Power-Feed

Controller

RDC

CAS

B(RING)

Ring-Trip

Detector

VBAT

BGND

AGND/DGND

VCC

VEE

Publication# 080136 Rev: D Amendment: /0

Issue Date: October 1999

12 3 4 5 6 7...20

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