High Performance Frac-N Synthesizer Integrates VCO

The CML Microcircuits CMX940 is a low-power, high-performance, 49 MHz to 2040 MHz Fractional-N PLL with fully-integrated wideband VCOs.

RFMW announces design and sales support for a high performance synthesizer from CML Microcircuits. The CMX940 is a low-power, high-performance Fractional-N PLL with fully-integrated wideband VCOs and programmable output divider, generating RF signals over a continuous frequency range of 49 MHz to 2040 MHz. Two, level-controlled, single-ended RF outputs support Tx and Rx sub-systems. A configurable reference path is used to minimize close-in phase noise and mitigate integer and sub-integer boundary spurious. Available in a 7 x 7 mm VQFN package, the chip configuration is controlled by a SPI compatible C-BUS serial interface and requires only external loop filter and clock reference to provide a complete and very compact RF synthesizer solution with typical phase noise of -122 dBc/Hz, 10 kHz offset at 520 MHz. Drawing only 58 mA from a 3.0 – 3.6V supply, it’s the perfect choice for a wide variety of portable and battery powered wireless applications, including digital narrowband two-way radio equipment compliant with ETSI PMR co-existence standards applicable under the Radio Equipment Directive.


Join RFMW's Newsletter
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.

Related Posts

Leave a Reply