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A/V demodulator delivers enhanced picture quality

Posted: 24 Apr 2009 ?? ?Print Version ?Bookmark and Share

Keywords:A/V demodulator? TV reception? analog standard broadcast?

Fresco Microchip Inc. has developed an audio/video demodulator that provides universal support for NTSC, PAL and SECAM analog broadcast standards for cable and terrestrial broadcast TV reception.

The FM1050 is claimed to be the first standalone universal legacy demodulator IC to eliminate the need for multiple external SAW filters typically required for TV-grade reception. The FM1050 employs Fresco's iSAW technology to achieve optimum adjacent channel rejection and simplify traditional designs through component count and cost reduction.

Additionally, the FM1050 includes Fresco's smartTUNE technology for enhancing picture quality by reducing the visible effects of TV interference caused by tuner artifacts. The chip is suited for standard analog-only tuner modules or on-board platforms commonly found in TVs, STBs and DVD-Rs.

The chip accepts a standard 36MHz intermediate frequency signal from a silicon tuner or traditional MOPLL based CAN tuner and demodulates standard (NTSC/PAL/SECAM) and non-standard worldwide A/V analog formats. Typical video SNR is 55dB (unweighted) and >60dB (weighted); enhanced over modulation support is >120 percent.

The FM1050 is available in a 40-pin 5mm x 5mm QFN package. The company has begun to sample the FM1050 to qualified customers.

The company wouldn't provide pricing information, but explained that the current ASP of a comparable product that consists of multiple SAW filters, amplifiers and a discrete analog demod (NTSC/PAL/SECAM) in high volume is $1.10. The FM1050 is a single integrated chip that offers a system cost savings compared to competitive products since it eliminates dozens of discrete components, expensive SAW filters and amplifiers, the company said.

- Ismini Scouras

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