The ADF4002 frequency synthesizer is used to implement local oscillators in the up-conversion and down-conversion sections of wireless receivers and transmitters. It consists of a low-noise digital phase frequency detector (PFD), a precision charge pump, a programmable reference divider and programmable N divider. The 14-bit reference counter (R counter), allows selectable REFIN frequencies at the PFD input. A complete phase-locked loop (PLL) can be implemented if the synthesizer is used with an external loop filter and voltage controlled oscillator (VCO). In addition, by programming R and N to 1, the device can be used as a standalone PFD and charge pump. The ADF4002-EP supports defense and aerospace applications (AQEC standard). * 400 MHz bandwidth * 2.7 to 3.3 V power supply * Separate charge pump supply (VP) allows extended tuning voltage in 3 V systems * Programmable charge pump currents * 3-wire serial interface * Analog and digital lock detect * Hardware and software power-down mode * 104 MHz phase detector