ATTL7557AAU データシートの表示（PDF） - Agere -> LSI Corporation

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ATTL7557AAU

Low-Power SLICs with Battery Switch

Agere -> LSI Corporation 

Data Sheet

January 2000

Description (continued)

L7556, L7557 Low-Power SLICs

with Battery Switch

BATTERY

SWITCH

PT

PR

A=4

A = –4

POWER CONDITIONING

& REFERENCE

VREG

+

1 V/8 mA

–

SPARE

–

OP AMP

+

CF1

CF2

DCOUT

VITR

SN

XMT

–

RCVN

+

RCVP

DCR

dc RESISTANCE

ADJUST

BATTERY FEED

STATE CONTROL

LCTH

+

LOOP CLOSURE DETECTOR

–

RTSP

+

RTSN

RING TRIP DETECTOR

–

ICM

RING GROUND

DETECTOR

B0

B1

NLC

NRDET

RGDET

Figure 1. Functional Diagram

12-2551.a (F)

Lucent Technologies Inc.

3

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