THS7103

SLOS387 − DECEMBER 2001

ADSL (ISDN) CENTRAL OFFICE LINE INTERFACE DRIVER/RECEIVER

1

www.ti.com

FEATURES

− 0.9-W Transmit Drivers

− 0.2-W Receive Channel

− No Line Matching Resistors Reduces

Output Voltage and Power Consumption

by up to 50%

Received Channels

− Bias Current Is Adjustable in 20%

Increments to Allow Lower Power Modes

for Short Line Lengths

APPLICATIONS

Driver/Receiver for ISDN Applications

DESCRIPTION

The THS7103 is a low power differential ADSL (ISDN)

central office line interface driver/receiver. It features

active termination drivers that eliminate the matching

resistors required with traditional ADSL line drivers.

Removal of the matching resistors allows the THS7103

to output nearly half the output voltage as compared

with traditional drivers, resulting in power savings of up

to 50%. The lower output voltage levels resulting from

the active termination also allow the THS7103 to

operate on a single 15-V supply, easing power supply

requirements.

The THS7103 also features integrated differential

receivers

to

reduce

the

component

count

on

multichannel ADSL line cards. To reduce valuable PCB

space further, the transmit path integrates a band-pass

filter while the receive path integrates a low-pass filter.

Four power-saving modes are featured on this device,

allowing it to operate at lower power levels for shorter

line lengths.

These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam

during storage or handling to prevent electrostatic damage to the MOS gates.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of Texas Instruments

standard warranty. Production processing does not necessarily include

testing of all parameters.

Copyright

 2001, Texas Instruments Incorporated

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

VFP PACKAGE

(TOP VIEW)

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910

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VCCOP1

TXAS1

TXAF

TXAS2

VCCON

TXBS2

TXBF

TXBS1

BUFEN

1BUFOUT

1BUFIN

RXOUTP

RXOUTN

2BUFIN

2BUFOUT

RXCM

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NC − No internal connection

PowerPAD



Preamp

Driver

Preamp

Receiver

BPF

Tx Out+

Tx Out−

Rx In+

Rx In−

LPF

Tx In+

Tx In−

Rx Out+

Rx Out−

SIMPLIFIED BLOCK DIAGRAM

PowerPAD is a trademark of Texas Instruments.