描述 Description

TDA18204HN is a cable pre-processor coupled with a low-power silicon tuner to addressthe front-end part of cable modems and gateways.
The cable pre-processor allows for smooth signal processing by a wideband receiverconnected to its output. It inputs single ended cable signal and provides amplification, tiltcompensation in the 42 MHz to 1 GHz bandwidth, low-pass filtering to reject signalsabove 1 GHz and provides a balanced output signal.
The low-power silicon tuner can be used for the battery-powered “emergency call”function of the Cable gateways. It provides a single channel reception using as small poweras possible. The output signal of the low-power silicon tuner section is a low-IF signal,interfacing a narrowband ADC at system level.
TDA18204HN copes with all cable standards worldwide and interfaces ideally to NXP? FullSpectrum Transceiver (FST) product family to make the full multi-stream RF front end of acable receiver or cable modem in a very small form factor, while providing with noadditional component the low-power path for VoIP in battery operated mode.

特性 Features

? RF front end for FST family of products
? Very low-Noise Figure (NF); 3.9 dB typical
? Very low-power consumption; 360 mW in wideband application
? Direct interfacing to the cable with single ended input
? Covers all cable standards worldwide
? Input frequency range up to 1 GHz
? Gain control to provide a stable output power irrespective of the input power
? Cable tilt correction to provide a flat output spectrum whatever the distance from thecable head-end to the user
? Balanced output to drive directly a high-performance ADC like the one implemented inNXP? FST products
? Narrowband low-power silicon tuner
? Additional outputs for optional standalone tuners or Loop-Through (LT)

應(yīng)用 Application

多數(shù)據(jù)流有線電視機(jī)頂盒(STB)
有線網(wǎng)關(guān)
DOCSIS 3.0電纜調(diào)制解調(diào)器