Micronas has a range of digital terrestrial demodulators targeted at the digital television market in China.

The DRX 398yZ demodulates high-definition and standard-definition television signals according to China's GB20600-2006 standard which is also known as DTMB (Digital Television Multimedia Broadcast).

Designed for set-top boxes, PVRs, IDTVs and PC-TV cards, the device requires only a single 8MHz SAW filter, and includes PWM RF-AGC and IF-AGC outputs. It integrates a high-speed 10-bit A/D converter, a high-quality PLL which allows the use of a simple crystal as clock reference, and SDRAM for de-interleaving.

It will offer synchronisation in the presence of phase and frequency offsets up to 500kHz, and robust timing recovery up to 100 ppm of sampling offset.

An on-chip microprocessor performs autonomous detection and operation of all possible DTMB modes without burdening the host processor.

See http://www.micronas.com