Digital Reception/ Transmission Ic Integrated Dvb Compliant Qam Demodulator - Atmel Corporation

The AT76C651B is a DVB-compliant Quadrature Amplitude Modulation (QAM) demodulation circuit, which CAN be used in DVB and other applications using Quadra- ture Phase Shift Keying (QPSK) or QAM transmission systems. The signal, after output from Tuner and adjacent channels rejection Filter is sampled at Intermediate Frequency (IF). The signal is converted to digital format and goes through several processing steps required for demodulation: Automatic gain control, baseband down conversion, Timing recovery with anti-aliasing filtering, square root raised-cosine receive filtering, Carrier recovery and digital gain control and equalization (linear and decision feedback dual structure). The output from demodulation then goes through forward error decoding: DVB/DAVIC de-mapping, frame synchronization, de-interleaving, Reed-Solomon decoding and spectrum de-randomization. The output before decoding may also be output directly for use with post-processing devices in applications other than DVB. An additional block situated in the back-end may be used to Filter out programmable PIDs, providing additional flexibility in interactive solutions or DVB data-broadcast PC receive cards. By ATMEL Corporation
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AT76C651B Pinout will be updated soon..., now you can download the pdf datasheet to check the pinouts !
AT76C651B circuits will be updated soon..., now you can download the pdf datasheet to check the circuits!

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