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.

About the Author
John Hamilton has over 40 years of experience in RF and Microwave technology, applications, technical support and marketing. He is the Vice President of Marketing at RFMW, holds multiple degrees and has a background in Test & Measurement.

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