ADI ADF4002BCPZ

The ADF4002 frequency synthesizer is used to implement local oscillators in the upconversion and downconversion 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.

• 400 MHz bandwidth
• 2.7 V 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

• Clock conditioning
• Clock generation
• IF LO generation