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ST introduces Bluetooth/FM radio combo

Posted: 28 Jan 2008     Print Version  Bookmark and Share

Keywords:wireless PAN  Bluetooth  FM radio transceiver 


STMicroelectronics has introduced its 4th-generation Bluetooth/FM Radio combo solution, which meets the demanding integration and cost requirements of the cellphone market. By combining Bluetooth wireless PAN functionality with an FM radio transceiver in a single 65nm chip, the STLC2690 is said to offer leading-edge integration and performance.

This combination of features and functionality saves space and cost for manufacturers of portable products, while delivering to consumers stereo FM R(B)DS reception (Rx) direct to their Bluetooth headsets. The fully integrated short range FM R(B)DS transmitter (Tx) allows users to enjoy stored music content on any in-car or home FM radio tuner and delivers increased versatility to the mobile device.

The new chip is manufactured in ST's advanced low-leakage ultralow-power 65nm RFCMOS technology, and reinforces ST's position of being able to offer the lowest power consumption in the Bluetooth arena.

"STLC2690 is just the first of a wider family of 65nm connectivity solutions that will become available during 2008 and beyond," said Leon Cloetens, VP and general manager of connectivity division at ST.

The STLC2690 is compliant with BT v2.1+EDR and further increases the field-proven class-1.5 Bluetooth output power, requiring only one supply voltage and without any calibration in production. The Bluetooth link stability is dramatically increased by also further improving the Bluetooth receiver sensitivity, while reducing the best-in-class current consumption by up to 35 per cent compared to former generation products in 130nm technology.

The integrated FM receiver sets a new world standard for receiver sensitivity and with real-time programmable filters for optimum search and sensitivity stability, the STLC2690 can also be used with integrated FM antennas. The device supports all deployed R(B)DS services and all worldwide FM bands (65-108MHz).

The short-range FM transmitter is designed for use in mobile phones that also take advantage of the presence of a FM receiver. Proprietary SureTune technology automatically selects the optimal FM transmit frequency, while the programmable high output power allows stable operation even when using integrated antennas with poor efficiency. The STLC2690 delivers a stable and user-friendly FM transmission implementation with real enhancement of the user experience in mobile applications.

The STLC2690 comes in a WLCSP with a 0.4mm pitch. Its ultralow external BOM count allows a PCB footprint as small as 36mm². The pin-out arrangement of the STLC2690 is also suitable for use on low-cost PCB assemblies.

STLC2690 samples are currently being evaluated by several leading handset manufacturers. Volume production is scheduled for 2H 08.

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