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15 May 2008


RFMD introduces ML5825 frequency transverter

RF Micro Devices (RFMD) Inc of Greensboro, NC, USA has introduced its ML5825 frequency transverter, which is designed to upconvert transmitted 2.4 GHz signals to 5.8 GHz and downconvert received 5.8 GHz signals to 2.4 GHz. It is specifically optimized for streaming video applications.

RFMD says that the addition of frequency translation functionality to a pre-existing 2.4 GHz ISM band radio allows original equipment manufacturers to quickly bring to market products for operation in the 5.8 GHz ISM band, including digital cordless phones and custom wireless data systems, such as streaming audio and video appliances.

On a single die, the ML5825 incorporates a voltage controlled oscillator (VCO), phase locked loop (PLL)-based synthesizer, low noise amplifier (LNA), receive and transmit bandpass filtering and mixers, and a transmit pre-driver. By offering a digitally controlled 18 dB gain step, the ML5825 allows radio designers to optimize third order input intercept point (IIP3) performance and noise figure based on specific application needs, says the company. Additionally, the ML5825 offers a low power standby mode of 10 microamps.

"The movement of many data communications systems to the 5.8 GHz ISM band presents an opportunity to leverage the existing system design know-how accumulated from 2.4 GHz products," said Alastair Upton, general manager of RFMD's Broadband and Consumer Business Unit. "The ML5825 gives OEMs the ability to rapidly bring new 5.8 GHz products to market with low risk and a reduced total cost of implementation."  

The ML5825 features:

  • Input voltage operation from 2.8 to 3.6 V
  • Selectable transmit output power
  • 4 dB noise figure in high gain mode
  • -14 dBm IIP3 in low gain mode
  • Integrated VCO/PLL spurious content -60 dBc or better

Available in a 4 x 5 x 0.9 mm, 28-pin QFN package, the ML5825 is priced at $1.46 each in quantities of 10,000 units.

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