THS7102 Datasheet, PDF (1/10 Pages) Texas Instruments – ADSL (POTS) CENTRAL OFFICE LINE INTERFACE DRIVER/RECEIVER

THS7102
ADSL (POTS) CENTRAL OFFICE LINE INTERFACE DRIVER/RECEIVER
D Full Rate ADSL Central Office Line
Driver/Receiver for POTS Applications
D 15-V Single Supply Operation
D Low 1.1-W Total Power Consumption
− 0.9-W Transmit Drivers
− 0.2-W Receive Channel
D Active Termination Differential Line Drivers
− No Line Matching Resistors Reduces
Output Voltage and Power Consumption
by up to 50%
D Integrated Differential Receivers
D Includes Analog Filters in Both Transmit
and Received Channels
D Multiple Power Saving Modes
− Bias Current Is Adjustable in 20%
Increments to Allow Lower Power Modes
for Short Line Lengths
SLOS311B− MAY 2000 − REVISED DECEMBER 2001
VFP PACKAGE
(TOP VIEW)
BUFEN
1BUFOUT
1BUFIN
RXOUTP
RXOUTN
2BUFIN
2BUFOUT
RXCM
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24
2
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3
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PowerPAD
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5
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VCCOP1
TXAS1
TXAF
TXAS2
VCCON
TXBS2
TXBF
TXBS1
description
The THS7102 is a low power differential ADSL
(POTS) 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
THS7102 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 THS7102 to operate on a single
15-V supply, easing power supply requirements.
NC − No internal connection
simplified block diagram
Tx In+
Tx In−
Rx Out+
Rx Out−
Preamp BPF Driver
Receiver LPF Preamp
Tx Out+
Tx Out−
Rx In+
Rx In−
The THS7102 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.
THS7102 Features
Device
Application
Transmit
Bandpass Filter^†
Receiver
Lowpass Filter
THS7102
ADSL (POTS)
152 kHz to 1.3 MHz
146 kHz
† _{When used in conjunction with the appropriate input capacitor (see the functional block}
diagram information)
CAUTION: The THS7102 provides ESD protection circuitry. However, permanent damage can still occur if the device is subjected
to high-energy electrostatic discharge. Proper ESD precautions are recommended to avoid any performance degradation or loss
of functionality.
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.
PowerPAD is a trademark of Texas Instruments.
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
• POST OFFICE BOX 655303 DALLAS, TEXAS 75265
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