STLC30R80

INTEGRATED RINGING SLIC

FOR SHORT LOOP APPLICATIONS

MONOCHIP SLIC SUITABLE FOR SHORT

LOOP APPLICATIONS

IMPLEMENTES ALL KEY FEATURES OF

THE BORSHT FUNCTION

INTEGRATED RINGING

SOFT BATTERY REVERSAL WITH PRO-

GRAMMABLE TRANSITION TIME

ON HOOK TRANSMISSION

LOW POWER DISSIPATION IN ALL OPER-

ATING MODES

AUTOMATIC DUAL BATTERY OPERATION

INTEGRATED RING TRIP DETECTION

METERING PULSE INJECTION

LOOP START, GROUND START FEATURES

SURFACE MOUNT PACKAGE

-40 TO +85°C OPERATING RANGE

DESCRIPTION

The STLC30R80 is a SLIC device suitable for

short loop applications. The SLIC provides the

generation of the ringing signal and the standard

battery feeding with full programmability of the DC

characteristic.

In particular two external resistors allow to set the

limiting current value (up to 50mA) and the value

of the resistive feeding when not in constant cur-

rent region.

November 2001

®

BGND

VREG

ILTF

D0

D1

D2

RS

ZAC

IREF

RING

D99TL431AMOD

DET

GDK/AL

CSIN

CAC

AGND CREV CSVR

LOGIC

INTERFACE

&

DECODER

SUPERVISION

COMMANDS

LINE STATUS

ILT

LINE

INTERFACE

ILL

TIP

RT1 RT2

CRT

REFERENCE

&

BIAS SWITCHING

DC

PROCESSOR

+

AC+

DC

AC

DC

RLIM

RTH

ZB

TX

VBAT BASE

RDC

AC

PROCESSOR

RX

ZAC1

CSOUT

TTXIN

RES

SW

BLOCK DIAGRAM

TQFP44 (10 x 10)

ORDERING NUMBER: STLC30R80

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