VES1820X Description
The VES1820X is a single chip channel receiver for 16, 32, 64, 128 and 256-QAM modulated signals. The device interfaces directly to the IF signal, which is sampled by a 9-bit AD converter. The VES1820X performs the clock and the carrier recovery functions.
VES1820X Key Features
- 16/32/64/128/256 QAM demodulator (DVB-C patible : ETS 300-429)
- On chip 9-bit ADC
- On chip PLL for crystal frequency multiplication
- Digital down conversion
- Half Nyquist filters (roll off = 15 %)
- Automatic gain control PWM output (AGC)
- Symbol timing recovery, with programmable second order loop filter
- Variable symbol rate capability from SACLK/64 to SACLK/4 (SACLK max = 36 MHz)
- Programmable anti-aliasing filters
- Full digital carrier recovery loop