STLC3075(2005) Ver la hoja de datos (PDF) - STMicroelectronics

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STLC3075
(Rev.:2005)

INTEGRATED POTS INTERFACE FOR HOME ACCESS GATEWAY AND WLL

STMicroelectronics 

STLC3075

INTEGRATED POTS INTERFACE

FOR HOME ACCESS GATEWAY AND WLL

1 FEATURES

■ MONOCHIP SLIC OPTIMISED FOR WLL &

VoIP APPLICATIONS

■ IMPLEMENT ALL KEY FEATURES OF THE

BORSHT FUNCTION

■ SINGLE SUPPLY (4.5 TO 12V)

■ BUILT IN DC/DC CONVERTER

CONTROLLER.

■ SOFT BATTERY REVERSAL WITH

PROGRAMMABLE TRANSITION TIME.

■ ON-HOOK TRANSMISSION.

■ PROGRAMMABLE OFF-HOOK DETECTOR

THRESHOLD

■ METERING PULSE GENERATION AND FILTER

■ INTEGRATED RINGING

■ INTEGRATED RING TRIP

■ PARALLEL CONTROL INTERFACE (3.3V

LOGIC LEVEL)

■ PROGRAMMABLE CONSTANT CURRENT

FEED

■ SURFACE MOUNT PACKAGE

■ INTEGRATED THERMAL PROTECTION

■ DUAL GAIN VALUE OPTION

■ AUTOMATIC RECOGNITION FLYBACK AND

Figure 2. Block Diagram

PD D0 D1 D2

Figure 1. Package

TQFP44

Table 1. Order Codes

Part Number

STLC3075

Package

TQFP44

BUCKBOOST CONFIGURATION

■ BCDIIIS 90V TECNOLOGY

■ -40 TO +85°C OPERATING RANGE

2 DESCRIPTION

The STLC3075 is a SLIC device specifically de-

signed for WLL (Wireless Local Loop), and ISDN-

Terminal Adaptors and VoIP applications. One of

the distinctive characteristic of this device is the

ability to operate with a single supply voltage (from

+4.5V to +12V) and self generate the negative bat-

tery by means of an on chip DC/DC converter con-

troller that drives an external MOS switch.

DET

January 2005

GAIN

SETTING

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

RTTX CAC ILTF RD IREF RLIM RTH

DC PROC

CREV

CSVR

DC/DC

CONV.

VOLT.

REG.

Vbat

CLK

RSENSE

GATE

VF

CZ

CVCC

VPOS

VBAT

AGND

Rev. 3

1/26

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