Analog Devices Introduces Tiny DTV Tuners
September 18, 2009
Analog Devices announced two new multi-standard terrestrial mobile TV RF tuners with features that should make them a popular choice for mobile DTV products.
The ADMTV804 is 4 x 4 mm, and the ADMTV803 is just 2 mm x 2 mm in a WLCSP package. This compares to the typical tuner's 5 mm x 5 mm size. Continuous mode power consumption is stated at 54 mA at VHF or 57 mA at UHF. The tuner chips have separate RF inputs and amplifiers for VHF and UHF. This should make it easier for manufacturers to include optimized antennas for each band. The tuners output zero-IF frequency I and Q signals. While tuners can generally be considered standard agnostic, Analog Devices lists ATSC M/H as one of the supported standards. Others standards include CMMB, DTMB, DVB-H, DVB-T, DAB, T-DMB, and ISDB-T. The product brief shows a 3 dB noise figure and typical AGC dynamic range of -102 dBm to +10 dBm. Dynamic power control is available on the chip. Complete product specifications are available only after signing a non-disclosure agreement. "Analog Devices has shipped approximately 20 million RF tuners worldwide and has had market share leadership in China since 2007, when ADI sold the world's first CMMB tuner into the Chinese mobile TV market," said Brian Kim, general manager of Integrant Technologies Division, Analog Devices. "Today, most CMMB terminals have ADI RF tuners inside." The success ADI has experienced, not only in China but in Korea and Japan as well, has served as the springboard for an expanded class of RF tuners to satisfy emerging United States and European mobile TV standards. ADI has developed chips that allow consumers in any part of the world --using any mobile TV broadcasting standard--to enjoy the highest quality reception while on the move." ADI notes ABI Research believes the size of the global mobile TV market for products, content and services could top UD$50 billion by 2013. Both tuner chips are available now at a price of $2.50/per unit in quantities of 1,000.
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