L9215G Просмотр технического описания (PDF) - Agere -> LSI Corporation

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L9215G

Short-Loop Sine Wave Ringing SLIC

Agere -> LSI Corporation 

Data Sheet

September 2001

Architecture Diagram

L9215A/G

Short-Loop Sine Wave Ringing SLIC

VREF

VITR

TXI

ITR

VTX

PT

PR

AGND VCC BGND VBAT2 VBAT1

VPROG NSTAT

RTFLT DCOUT

B = 20

POWER

AAC

1.5 V

BAND-GAP

REFERENCE

–

OUT

AX

+

(ITR/306)

VREF

ITR

ITR

RFT

18 Ω

TIP/RING

CURRENT

SENSE

RFR

18 Ω

–

+1

+

VREG

+

–1

–

VREG

RINGING

27.5x

CURRENT

LIMIT

AND

INRUSH

CONTROL

RING

TRIP

LOOP

CLOSURE

VITR

RECTIFIER

COMMON-

MODE

CURRENT

DETECTOR

ICM

TRGDET

PPM

2x

X1

X1

ac INTERFACE

–

GAIN

+

9215A GAIN = 4

9215G GAIN = 1

PARALLEL

DATA

INTERFACE

CF2

OVH

CF1

FB2

FB1

RCVN

RCVP

RINGIN

PPMIN

BR B0 B1 B2

Figure 1. Architecture Diagram

12-3530.g (F)

Agere Systems Inc.

7

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