STLC3055 查看數據表（PDF） - STMicroelectronics

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STLC3055

WLL & ISDN-TA SUBSCRIBER LINE INTERFACE CIRCUIT

STMicroelectronics 

®

STLC3055

WLL & ISDN-TA SUBSCRIBER LINE INTERFACE CIRCUIT

MONOCHIP SLIC OPTIMISED FOR WLL &

ISDN-TA APPLICATIONS

IMPLEMENT ALL KEY FEATURES OF THE

BORSHT FUNCTION

SINGLE SUPPLY (5.5 TO 15.8V)

BUILT IN DC/DC CONVERTER CONTROL-

LER.

SOFT BATTERY REVERSAL WITH PRO-

GRAMMABLE TRANSITION TIME.

ON-HOOK TRANSMISSION.

PROGRAMMABLE OFF-HOOK DETECTOR

THRESHOLD

METERING PULSE GENERATION AND FIL-

TER

INTEGRATED RINGING

INTEGRATED RING TRIP

PARALLEL CONTROL INTERFACE (3.3V

LOGIC LEVEL)

PROGRAMMABLE CONSTANT CURRENT

FEED

SURFACE MOUNT PACKAGE

INTEGRATED THERMAL PROTECTION

-40 TO +85°C OPERATING RANGE

BLOCK DIAGRAM

D0 D1 D2

TQFP44

ORDERING NUMBERS: STLC3055Q

STLC3055QTR

DESCRIPTION

The STLC3055 is a SLIC device specifically de-

signed for WLL (Wireless Local Loop) and ISDN-

Terminal Adaptors. One of the distinctive charac-

teristic of this device is the ability to operate with

a single supply voltage (from +5.5V to +15.8V)

and self generate the negative battery by means

of an on chip DC/DC converter controller that

drives an external MOS switch.

The battery level is properly adjusted depending

on the operating mode. A useful characteristic for

DET

September 2000

TX

RX

ZAC1

ZAC

RS

ZB

CKTTX

CTTX1

CTTX2

FTTX

INPUT LOGIC AND DECODER

Status and functions

AC PROC

SUPERVISION

OUTPUT LOGIC

LINE

DRIVER

OUTPUT

STAGE

BGND

TIP

RING

TTX PROC

REFERENCE Vcc

Vss

Agnd

DC PROC

CREV

CSVR

DC/DC

CONV.

CLK

RSENSE

GATE

VF

VOLT.

REG.

Vbat

CVCC

VPOS

VBAT

RTTX CAC ILTF RD IREF RLIM RTH

AGND

1/22

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