Analog Devices has added to its family of Othello direct conversion radios and TD-SCDMA compatible devices.

The Othello-3T AD6552 is the second-generation radio designed specifically for the 3G TD-SCDMA standard and will support all of the company's TD-SCDMA baseband chipsets, including SoftFone-LCR and SoftFone-LCR+.

Based on the Othello direct-conversion architecture and a novel low-noise transmitter, the aim with this devices has been to simplify 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.

The receiver section also provides EVM performance that supports the requirements for HSDPA and includes a fully-automatic dc offset control.

The chip integrates many of the components needed for a handset radio design -VCOs, tank circuits, loop filters and power management.

Othello-3T AD6552 is sampling in a 6x6mm 40-lead lead-frame chip scale package.