ADF4251 Datasheet (Analog Devices) - Dual Fractional-N/Integer-N Frequency Synthesizer

ADF4251, Dual Fractional-N/Integer-N Frequency Synthesizer

The ADF4251 is a dual fractional-N/integer-N frequency synthesizer that can be used to implement local oscillators (LO) in the upconversion and downconversion sections of wireless receivers and transmitters.

Both the RF and IF synthesizers consist of a low noise digital PFD (phase frequency detecto

ADF4251 Features

* 3.0 GHz Fractional-N/1.2 GHz Integer-N 2.7 V to 3.3 V Power Supply Separate V P Allows Extended Tuning Voltage to 5 V Programmable Dual Modulus Prescaler RF: 4/5, 8/9 IF: 8/9, 16/17, 32/33, 64/65 Programmable Charge Pump Currents 3-Wire Serial Interface Digital Lock Detect Power-Down Mode Programmab