描述 Description

TDA18264 is a Full Spectrum Transceiver (FST). This device includes all the keyfunctions to realize the front end of a multiple stream receiver and transmitter for a cablegateway.
The receive function of TDA18264 allows the parallel reception of up to 16 independentcable channels, each of them being at any frequency in the RF band from 42 MHz to1002 MHz. Each channel can be 6 MHz or 8 MHz wide QAM modulated, according to ITUJ/83 annex A, B or C. TDA18264 input is connected to the cable through a cable spectrumpre-processor as TDA18204 that amplifies and corrects the tilt of the cable spectrum. Theoutput of the TDA18264 is connected to the main SoC using one or two high-speed seriallinks.
The transmit function of TDA18264 allows generating the return channel of a DOCSIS 3.0cable modem, based on the signal coming from the main SoC through a high-speed seriallink. Output of this section only requires a power amplifier as BGA3031 to drive the cablethrough a diplexer with the required power level.
TDA18264 realizes the complete 16-channel receive path and 8-channel transmit pathusing only 2.55 W.
The proprietary highly digitalized architecture enables accurate spectral analysis (from50 MHz to 1350 MHz RF band) which can be useful for providing remote diagnostic toolsto cable operators.

特性 Features

High integration level of the whole front end of a cable gateway
Parallel reception of up to 16 channels
Reception frequency band from 42 MHz to 1002 MHz
Compliant with 6 MHz and 8 MHz QAM channels
Upstream DAC to generate up to 8 return channels
Extremely small size for 16 tuners
Low power - less than 110 mW per downstream channel
Simple and cost effective application design
Simplified interfacing with SoC through high-speed serial links

應(yīng)用 Application

Cable gateways
DOCSIS 3.0 cable modems