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TLFD600 3.3 V INTEGRATED ANALOG FRONT END
SLAS280 - MAY 2000
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NOTE: Result for appropriate receive channel gains setting
description
The TLFD600PAP is a high-speed, programmable, analog front end for Customer Premise Equipment (CPE) modems that supports G.lite and full rate ADSL applications. The codec is also Home Phoneline Networking Alliance (HPNA)-compatible, with the ability to operate with up to three HPNA devices connected to the same line. The device performs transmit encoding (D/A conversion), receive decoding (A/D conversion), transmit and receive filtering functions, receive equalizer, and programmable gain amplifications (PGA). The device also incorporates voltage compensated crystal oscillator (VCXO) DAC, DPLL, and line drivers for TX and RX channels which reduces the number of system components. Two auxiliary amplifiers are provided, on-chip, for additional on-board filtering and amplification with additional off-chip passive components. The receive channel has an update rate of 1.104 Msps in the G.lite mode and 2.208 Msps in the full rate mode. The transmit channel has an update rate of 276/552 Ksps in G.lite mode and 552 Ksps in full rate mode. A simple serial interface on the digital side reduces system component count. Both data and command lines share the same serial port. The interface can connect directly to the TI C6x and C54x family of DSP chips. The device operates using 3.3-V and 12-V supply lines (12 V is used for the on-chip TX line driver) and is packaged in a single 64-pin PAP (PowerPADTM) package. It is characterized for operation from -40C to 85C.
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.
PRODUCT PREVIEW information concerns products in the formative or design phase of development. Characteristic data and other specifications are design goals. Texas Instruments reserves the right to change or discontinue these products without notice.
Copyright (c) 2000, Texas Instruments Incorporated
POST OFFICE BOX 655303
* DALLAS, TEXAS 75265
1
PRODUCT PREVIEW
Supports Both FDM G.lite and Full Rate ADSL Applications 14-Bit Integrated A/D and D/A Converters 1.104 (G.lite)/2.208 (Full Rate) MHz Update Rate for the RX Channel 276/552 kHz Update Rate for the TX Channel Home Phoneline Networking Alliance (HPNA) Compatible Integrated Line Driver for TX and Line Receiver for RX Integrated TX/RX Filter, PGAs and Equalizer Integrated Voltage Compensated Crystal Oscillator (VCXO) DAC and Digital Phase Lock Loop (DPLL) 3.3-V and 12-V Supply Minimum -150 dBm/Hz for Analog Input Reference Noise (see Note)
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Direct Single Serial Interface to TIs C54x or C6x DSP (Data and Control) 6 General Purpose I/O Pins Integrated Auxiliary Amplifiers for System Flexibility Software and Hardware Power Down Modes Power Dissipation - 710 mW Without Line Driver - 1.25 W With Line Driver Across 50 Load Hardware Power-Down . . . 80 mW Industrial Temperature Range Available in a 64-Pin PAP Package (PowerPADTM)
IMPORTANT NOTICE Texas Instruments and its subsidiaries (TI) reserve the right to make changes to their products or to discontinue any product or service without notice, and advise customers to obtain the latest version of relevant information to verify, before placing orders, that information being relied on is current and complete. All products are sold subject to the terms and conditions of sale supplied at the time of order acknowledgment, including those pertaining to warranty, patent infringement, and limitation of liability. TI warrants performance of its semiconductor products to the specifications applicable at the time of sale in accordance with TI's standard warranty. Testing and other quality control techniques are utilized to the extent TI deems necessary to support this warranty. Specific testing of all parameters of each device is not necessarily performed, except those mandated by government requirements. Customers are responsible for their applications using TI components. In order to minimize risks associated with the customer's applications, adequate design and operating safeguards must be provided by the customer to minimize inherent or procedural hazards. TI assumes no liability for applications assistance or customer product design. TI does not warrant or represent that any license, either express or implied, is granted under any patent right, copyright, mask work right, or other intellectual property right of TI covering or relating to any combination, machine, or process in which such semiconductor products or services might be or are used. TI's publication of information regarding any third party's products or services does not constitute TI's approval, warranty or endorsement thereof.
Copyright (c) 2000, Texas Instruments Incorporated

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