CMX940 RF Synthesizers CML Micro CMX940 RF Synthesizers are low-power high-performance Fraction-N PLL with fully integrated wideband VCO and programmable output divider. These RF synthesizers generate RF signals over a continuous frequency range of 49MHz to 2040MHz. The CMX940 synthesizers have two single-ended RF outputs to support Tx and Rx sub-systems. These RF synthesizers ICs are configured by an SPI compatible C-BUS serial bus. The CMX940 synthesizers are available in a 7mm x 7mm LGA-48 package reducing component count and PCB board area. These RF synthesizers are low noise general purpose 48.57MHz to 2.04GHz RF synthesizers. The CMX940 comes with a dual-loop architecture.