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Philips ships front-end chipset for digital video receivers

Posted: 08 Aug 2002 ?? ?Print Version ?Bookmark and Share

Keywords:royal philips electronics? tda6650tt? tda6651tt? tda9888ts? tda9889ts?

Royal Philips Electronics has introduced a front-end chipset targeted at improving digital video reception of digital terrestrial video receivers. The chipset consists of the company's TDA6650TT/TDA6651TT mixer-Oscillator/PLL (MOPLL) device and the TDA9888TS/TDA9889TS AGC amplifier.

The TDA6650TT/TDA6651TT MOPLL down-converts the antenna signal to a first-IF frequency, introducing very low levels of phase noise, and achieving linearity to cope with stringent NORDIG specifications, maintaining reception integrity, even in the presence of strong interference sources.

Although primarily designed for terrestrial digital video reception, the MPOLL can also handle analog TV signals, enabling the design of a common front-end for hybrid analog/digital broadcast tuners.

The frequency selective AGC amplifiers - the TDA9889TS (European/North American) and TDA9888TS (Japanese) - apply automatic gain control to the output of the TDA6650TT/TDA6651TT.

In addition, the AGC amplifiers further down-convert the signal to a 5MHz second-IF frequency along with additional out-of band channel filtering.

The device is suited to handle the coded orthogonal frequency division modulation/vestigial sideband modulated signals used for digital terrestrial transmissions, eliminating the need for filters and components normally required in the receiver.

The TDA6650TT and TDA6651TT will initially be available in a TSSOP38 package, and subsequently in ultra-small HVQFN40 (6-by-6mm footprint) package. The TDA9888TS and TDA9889TS are housed in 16-pin SSOP packages.

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