RFMW offers Dual PLL with On-chip VCO

CML Microcircuits CMX979 RF frac N synthesizer with integrated VCO offers 2700 to 3600MHz output LO RFMW, Ltd. announces design and sales support for CML Microcircuits’ CMX979 low power, dual RF/IF synthesizer IC. The CMX979’s RF fractional-N synthesizer section, with integrated VCO, takes only 36-45mA to produce a 2.7 to 3.6GHz output LO signal. The synthesizer’s configurable 1/2/4/6/8 frequency divider can shift its output to as low as 338MHz. With only 9mA additional current the device’s low power integer-N IF synthesizer, with integrated VCO and loop filter, can produce an output signal in the 500 to 1000MHz range and its 1/4/8/16 configurable output divider can shift that to as low as 31MHz. Targeted towards low power / low cost RF solutions the CMX979 combines RF and IF LO synthesizers in a small footprint to support super-heterodyne and single conversion radio architectures. On-chip calibration of integrated RF and IF VCOs ensures performance across temperature and supply voltage variations. The CMX979 requires very few external components and is available in a small 6x6mm VQFN package.

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