The ADF4252 is a frequency synthesizer from Analog Devices. It is powered by 2.7V to 3.3V and supports 3.0GHz fractional-N/1.2GHz integer-N. It supports 4/5, 8/9, 16/17, 32/33, 64/65 pre-divider ratios, 8/9, 16/17, 32/33, 64/65 programmable charge pump currents, three-wire serial interface, digital lock detect, power-down mode, programmable modulus on fractional-N synthesizer, trade-off noise versus spurious performance