Friday, 05 December 2008 
Analog Devices' releases second-generation Othello radio for 3G TD-SCDMA wireless handsets PDF Print E-mail
Thursday, 12 July 2007

New CMOS RF Transceiver adds dual-band and HSDPA support and simplifies 3G radio design by eliminating need for costly SAW filters.

Analog Devices, Inc. a global leader in high-performance semiconductors for signal processing applications, today unveiled the latest addition to its award-winning family of Othello® direct conversion radios and its broad TD-SCDMA product portfolio, the Othello-3T AD6552. Expanding on the company’s legacy as a leading provider of solutions for TD-SCDMA wireless handsets, the Othello-3T AD6552 is ADI’s second-generation radio designed specifically for the 3G TD-SCDMA standard and complements all of the company’s TD-SCDMA baseband chipsets, including SoftFone-LCR and SoftFone-LCR+.

Based on the proven Othello direct-conversion architecture and a novel low-noise transmitter, the AD6552 simplifies the development of the radio section of 3G wireless handsets by eliminating the SAW (surface acoustic wave) filters that are usually needed in the transmit path, reducing both cost and board space. In addition, the receiver section provides EVM performance that supports the requirements for HSDPA and includes a fully-automatic dc offset control. In addition, the AD6552 integrates virtually all of the necessary components for a handset radio design (VCOs, tank circuits, loop filters and power management) all on a single chip. Component count for a dual-band radio is reduced by almost 40% compared to the previous two-chip Othello-W single-band radio for TD-SCDMA.

Analog Devices is the only single source supplier of complete chipset solutions for the TD-SCDMA standard and the company’s chipsets have been an integral part of the network trials in China over the past three years. Today, commercial TD-SCDMA networks are being deployed in 10 cities throughout China, with a total population estimated at more than 60 million, which is roughly equivalent to the entire population of the United Kingdom or France.

“Analog Devices is the only company to offer a complete solution for TD-SCDMA and has built a broad portfolio of solutions for the standard over the past few years,” said Christian Kermarrec, vice president, RF and wireless systems, Analog Devices Inc. “Today, with networks being built that can reach 60 million potential subscribers, TD-SCDMA interest is at an all-time high. The latest addition to our TD-SCDMA product family, Othello-3T AD6552, represents the industry’s most complete and highly-integrated radio for TD-SCDMA handsets, and will enable both domestic Chinese and global handset OEMs to speed time to market and gain a position in China’s emerging 3G market.”

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