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).
### Features and Benefits
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
**ADF4002-EP supports defense and aerospace applications (AQEC standard)**