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DVB-T chipset targeted at set-top box, PCTV and iDTV apps

Newport Beach, Calif.—Conexant Systems Inc. is sampling the CX24230 digital video broadcasting-terrestrial (DVB-T) demodulator and
CX24210 worldwide terrestrial and cable tuner, which together form a front-end product for DVB-T set-top boxes (STBs), PC video capture cards, and integrated digital televisions (iDTVs).

The CX24230 DVB-T demodulator features an internal MCU and memory. The firmware for the MCU is provided by Conexant, simplifying customer software development requirements. Features include a 12-bit A/D converter, digital adjacent channel filtering, and an enhanced forward error correction architecture.

The CX24210 tuner supports multiple worldwide digital and analog terrestrial standards, including DVB-T, ATSC, PAL, NTSC and SECAM. The tuner also complies with global cable specifications, including DOCSIS(R) 2.0, EuroDOCSIS, and DVB-cable (DVB-C).

Cost-saving features of the CX24210 include integrated voltage controlled oscillators, synthesizers, and loop-through circuitry and an internal adjustable band-pass filter that enables standard-specific optimization, eliminating the need for additional SAW filters. It requires only a single 3.3 volt power supply for operation.

The CX24210 tuner has been optimized to work with the company's recently announced CX2445X family of DOCSIS 2.0 front-end cable modem chips.

For a full story on the CX2445X family, click here.

The tuner can also be used with Conexant's CX2488X family of PCIe audio/video decoders to form a complete system product for analog and digital PCTV applications.

The demodulator is packaged in a 64-pin thin quad flat pack (TQFP), and the tuner is offered in a 48-pin quad flat no-lead (QFN) package.

Pricing: Together, the CX24230 and CX24210 are priced at $5.00 in quantities of 10,000.
Availability: Sampling now with volume production scheduled for September 2007.
Product briefs: CX24210 and CX24230.

Conexant Systems, 1-888-855-4562, www.conexant.com

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