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Highly-integrated tuner fits DTVs worldwide

Posted: 14 Dec 2009     Print Version  Bookmark and Share

Keywords:tuner  base band IC  DTV  TV  receiver 

MT3141 tuner

Microtune Inc. brings to the global market a world-standard RF-to-base band IC based on highly integrated silicon architecture. Claiming uncompromised performance at a compelling new price point, the MT3141 TV receiver suits global DTV designs. Smaller, higher-performing and more cost-effective than similar devices, the tuner lets all brand manufacturers build thinner, lighter DTVs across all price points and screen sizes.

Based on Microtune's MicroCeiver architecture, the MT3141 is a miniaturised RF-to-base band single chip that combines the functions of an RF tuner, analogue 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 analogue/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 base band video signals. It is characterised 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 analogue TV reception (NTSC, PAL and SECAM analogue 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 (Rs.93.48) in high volume. To simplify evaluation and design for qualified customers, Microtune offers a MicroCeiver MT3141 evaluation board and reference design.

At $2 (Rs.93.48) 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.

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