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DTV chipset simplifies front-end designs

Posted: 15 Mar 2010 ?? ?Print Version ?Bookmark and Share

Keywords:DTV IC? receiver? demodulator? China DTV?

MT3141 + MT886x CTTB receiver

Microtune Inc. has launched a cost-effective DTV receiver chipset, targeted for the China market, which allows China's TV manufacturers to deliver superior broadcast and cable reception across TVs of any size, model or price point. When implemented in TVs, the highly-integrated DTV chipset allows China's domestic electronics manufacturers to simplify TV front-end designs, reduce costs and increase reliability.

Microtune's high-performance receiver chipset consists of the MT3141 multi-standard RF receiver and one of the ICs from Microtune's new MT886x family of demodulators. The chipset is engineered to be compliant with China's GB20600-2006 National Standard for DTV broadcast, also known as the China Terrestrial Television Broadcast (CTTB) or the Digital Television Multimedia Broadcast (DTMB) standard. It is also designed to reliably exceed the RF and channel decoding requirements of the China Electronics Standardization Institute (CESI), also referred to as the Beijing Lab 4 test specifications.

The DTV chipset offers a single receiver solution designed to comply with all of China's legacy analog/digital and terrestrial/cable standards and is engineered to deliver industry-leading performance, low cost of goods and the smallest receiver footprint.

CTTB is the most technically advanced DTV broadcast standard in the world, supporting both fixed and mobile systems, single- and multiple-carrier transport and more than 300 operating modes. The Chinese government, through the Beijing Lab 4 test specifications, has established a minimum performance bar that China's TV manufacturers must meet in future digital television sets. The Chinese government is aggressively driving the transition to digital TV broadcasting and is expected to mandate a national plan for the analog-to-digital conversion.

"TV manufacturers are now searching for the latest technology to support the complete range of China's TV broadcast signals and operating modeswhile minimizing production cost and time-to-market," said James A. Fontaine, president and CEO of Microtune. "Our low-cost DTV receiver chipset is designed not only to surpass the Beijing Lab 4 benchmarks with significant margin, but also to deliver the highest grade of receiver performance across the real-world off-air and cable signal conditions of China's emerging digital broadcast environment."

The chipset is anchored by Microtune's new MT3141 receiver, a complete RF-to-baseband single chip. It is a multi-standard (terrestrial and cable) tuner with integrated PAL/SECAM/NTSC analog demodulator and is engineered to exceed the RF requirements of China's CTTB, DVB-C and PAL standards. The MT3141 chip is designed to deliver excellent sensitivity and superior adjacent channel rejection, these technical metrics that directly translate into an increase in digital TV signal coverage for broadcasters and high-quality, stable TV reception for TV viewers. The MT3141 also offers a world-standard receiver solution for those Chinese manufacturers building TVs for export.

The DTV chipset also incorporates one of four new CTTB-compliant demodulators from the MT886x series of channel decoders. The products are based on Microtune's patented Fully Adaptive Demodulation and Equalization architecture, which enables the demodulators to provide "best in class" performance to significantly improve end user TV reception. The MT886x products are designed to offer the lowest external bill of materials. Each of the MT886x products is a true SoC that integrates the memory required to support all CTTB operating modes in China and Hong Kong. By integrating the memory on die, Microtune lowers the bill of materials. It also insulates TV manufacturers from the price fluctuations in the DRAM market, which may impact suppliers whose products use alternative system-in-package or multi-chip-module approaches.

The MT886x demodulators are available in two package options (64- and 80-pin LQFP), and both packages are offered with or without optional DVB-C support. The 80-pin products are pin-compatible with Microtune's existing AU88xx family of CTTB demodulator products, allowing a streamlined migration to new designs with higher performance.

Microtune is engaged with early adopter partners on the chipset, with samples expected to be available to the wider market in Q2 10. The MT3141 + MT886x CTTB receiver chipset is priced under $7 to high-volume customers for both ICs. To simplify evaluation and design and to accelerate time-to-market, Microtune plans to offer a fully validated, ready-to-implement Manufacturing Reference Kit.

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