NXP Semiconductors VES1820X
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.FEATURES
● 16/32/64/128/256 QAM demodulator (DVB-C compatible : 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.
● Carrier acquisition range up to 8 % of symbol rate.
● Integrated adaptative equalizer (Linear Transversal Equalizer or Decision Feedback Equalizer).
● On chip FEC decoder (Deinterleaver & RS decoder), full DVB-C compliant.
● DVB compatible differential decoding and mapping.
● Parallel or serial transport stream interface.
● I2C bus interface, for easy control.
● CMOS 0.35µm technology.
APPLICATIONS
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● DVB-C fully compatible. Digital data transmission using QAM modulations. Cable demodulation. Cable modems MMDS (ETS 300-429).