SciFi, вроде, прав. Первая релевантная ссылка по запросу "TV Tuner IC": https://www.maximintegrated.com/en/products/comms/wireless-rf/MAX3580.html
The MAX3580 direct-conversion tuner integrates an RF input switch and a multiband tracking filter, allowing low-power tuner-on-board applications without the cost and power-dissipation issues of dual-conversion tuner solutions. The zero-IF architecture eliminates the need for SAW filters by providing baseband I and Q outputs directly to the demodulator. In addition, DC-offset cancellation is implemented on-chip using a mixed-signal architecture to improve the second-order distortion performance and the dynamic range of the downstream digitizer and demodulator.
Nikolay_Po (24.02.2020 19:04, просмотров: 234) ответил mse homjak на Обычно ИС демодулятора тоже реализована по соседству, в цыфре, на том-же кристалле.