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5 May 2008


RFMD launches 2.4GHz ISM-band transceiver

RF Micro Devices Inc of Greensboro, NC, USA is sampling the ML2726 low-power, low-IF, frequency shift key (FSK) transceiver, designed for operation in the license-free 2.4GHz industrial, scientific and medical (ISM) band.

RFMD says that the ML2726 reference design, which demonstrates FCC part-15 compliance, enables consumer product original equipment manufacturers (OEMs) to quickly bring to market products featuring wireless data connectivity for multiple applications, including game controllers, PC peripherals, automatic meter reading, security systems, telemetry and point-of-sale vending equipment.

The highly integrated RF transceiver incorporates a sigma-delta fractional-N synthesizer, voltage controlled oscillator (VCO), upconversion and downconversion mixers, data slicer and transceiver configuration registers. By offering what is claimed to be a market-leading 2Mb/s data transmission rate, the ML2726 minimizes average power consumption, leading to longer battery life in portable applications. It also incorporates self-alignment of the low-IF receiver and phase locked loop (PLL) detection and control, both easing implementation and eliminating the cumbersome mass production tuning process which is customary with competing transceiver solutions, the firm claims.

Technical features include: closed-loop transmit FSK modulation; analog and digital data output; digital transmit data input; digital received signal strength indication (RSSI) output; integrated power regulation enabling 2.7 to 4.5 V operation; and –81dBm sensitivity at 0.1% bit error rate (BER).

“The highly specialized wireless data markets, such as meter reading and wireless game controllers, demand a high level of support and component flexibility to meet their individual application needs,” says Alastair Upton, general manager of RFMD’s Broadband and Consumer Business unit.

The ML2726 comes in a 7mm x 7mm x 1mm, 32-pin TQFP package and is priced at $2.67 each, in quantities of 10,000 units.

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