DESCRIPTION

· The ADF4002 is a frequency synthesizer designed for implementing local oscillators in both upconversion and downconversion sections of wireless receivers and transmitters.

· It features a low noise digital phase frequency detector (PFD), a precision charge pump, a programmable reference divider, and a programmable N divider.

· The 14-bit reference counter allows for selectable REFIN frequencies at the PFD input.

· When combined with an external loop filter and voltage-controlled oscillator (VCO), it forms a complete phase-locked loop (PLL).

· Additionally, by programming both R and N to 1, the device can function as a standalone PFD and charge pump.

FEATURES

· 400 MHz bandwidth

· Operates on a 2.7 V to 3.3 V power supply

· Separate charge pump supply (VP) enables 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 modes

· 104 MHz phase detector

APPLICATIONS

· Clock conditioning

· Clock generation

· Intermediate Frequency (IF) Local Oscillator (LO) generation