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Integrated receiver chip minimizes DTV BOM

Posted: 14 Dec 2009 ?? ?Print Version ?Bookmark and Share

Keywords:tuner? baseband IC? DTV? TV? receiver?

MT3141 tuner

Microtune Inc. rolls a new highly-integrated RF-to-baseband IC-based on silicon architecture that enables TV manufacturers to use a smaller, higher-performance and more cost-effective receiver across their next-generation global DTV designs. The MT3141 allows manufacturers to build thinner, lighter DTVs that deliver premium performance for all brands, models, price points and screen sizes.

Based on Microtune's MicroCeiver architecture, the MT3141 is a miniaturized RF-to-baseband single chip that combines the functions of an RF tuner, analog TV demodulator, IF filters and amplifiers in a tiny 6 mm x 6 mm IC. It is the receiver engineered to exceed the RF performance requirements of worldwide analog/digital broadcast and cable standards, including those for China's new CTTB (also known as DTMB or DMB-T) and Europe's next-generation DVB-T2 requirements. It is small enough for the lightest 'picture on a wall' TVs, but packs the performance to put a superb TV picture on the biggest wide screen.

"Faced with increasing complexity, shrinking ASPs, divergent broadcast standards, and the need to differentiate, TV manufacturers have been looking for a new class of world-standard electronics," said James Fontaine, president and CEO of Microtune. "Yet across all these factors, manufacturers and consumers are driven by TV picture quality. With our MT3141, manufacturers can drive world-class receiver performance into global TVs, while reducing their footprint, design effort and manufacturing costs."

Key performance metrics include typical noise figure of 3dB; video signal to noise ratio >60dB; typical sensitivity ATSC of -88dBm; DVB-T desired to undesired signal exceeding NorDig 2.1 specifications by >10dB. The MT3141 receiver delivers excellent sensitivity and superior adjacent channel rejection, technical metrics that directly translate into an increase in DTV signal coverage for broadcasters and high-quality, stable TV reception for TV viewers.

A single chip, the MT3141 receives all frequencies in the 44MHz to 1GHz range. It converts a selected channel either to a low-IF or to a standard IF between 4MHz and 57MHz, and it outputs filtered audio and baseband video signals. It is characterized by a very high level of integration with minimal external BOM that require no active components. The MT3141 virtually eliminates an external BOM.

In addition, the MT3141 complies with worldwide broadcast standards and is engineered to exceed all performance requirements published for them, including those for legacy analog TV reception (NTSC, PAL and SECAM analog television signals for off-air and cable). The transition to digital broadcast around the world is expected to continue through at least 2018.

Offered in a 6mm x 6mm 40-pin QFN package, the MT3141 tuner is available now to early access customers and is priced at $2 in high volume. To simplify evaluation and design for qualified customers, Microtune offers a MicroCeiver MT3141 evaluation board and reference design.

At $2 in high volumes, the MT3141 breaks through price, performance and size barriers to enable TV manufacturers finally to deploy an advanced silicon receiver in an unified high-quality front-end across all next-generation TV platforms.

For application notes on receivers click here.

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