stlc1512 STMicroelectronics, stlc1512 Datasheet

stlc1512

Manufacturer Part Number

stlc1512

Description

Northenlite?? G.lite Bicmos Analog Front-end Circuit

Manufacturer

STMicroelectronics

Datasheet

1.STLC1512.pdf (26 pages)

Current page: 1 of 26
Download datasheet (311Kb)

Figure 1. Block Diagram

November 2000

This is preliminary information on a new product now in development. Details are subject to change without notice.

Low power architecture -- Class AB, current

drive, output stage through a centre tapped

transformer to facilitate power supply switching

between 5.0V and a lower voltage. (3.3V in the

reference design) This gives a reduction in

power consumption.

480mW power consumption with a typical G.lite

signal.

600mA current driving capability

Positive +5.0V and one lower supply. (3.3V in

the reference design)

Switching power supplies to save power

Thermal overload shutdown

Four programmable receive gains

Opamp for a low pass filter in the receive path

Undedicated opamp with separate power down

control (used as a transmit path filter in the

reference design)

Separate power down control for Tx and Rx

path

48-pin TQFP (7x7x1.4mm) package

DCFBON

DCFBOP

AMPOUT

LPFOUT

REF2P5

RXANG

TXANG

AMPIP

AMPIN

RBIAS

LPFIN

PAIN

PAIP

LPF AMP

TX REF

RX REF

Buffer

OPAMP

Shutdown

Thermal

BIAS

NorthenLite™ G.lite Loop Driver

PGA

The STLC1512 G.lite line driver chip contains the line

driver as well as part of the receive path required in a

central office G.lite modem. It provides an interface

between the AFE chip (STLC1511) and the tele-

phone line. The line driver chip has been designed

with low power consumption, high signal to noise

plus distortion ratio and high current driving capabili-

ty.

1.0 GENERAL DESCRIPTION

Preamp

Feedback

Amp

ORDERING NUMBER: STLC1512

Power

Stage

TQFP48 (7x7x1.40)

STLC1512

PAONx

PGA1

DCFBIN

PWRVEEx

PAOPx

BUFFP

BUFFN

RXPD

AMPPD

TXPD

PGAIN

PGA0

DCFBIP

FPP

PGAOUT

FPN

PRODUCT PREVIEW

1/26

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