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

Manufacturer: Analog Devices

ADF4251 dual fractional-n/integer-n frequency synthesizer by Analog Devices - Datasheet Preview

Datasheet Details

Part number	ADF4251
Manufacturer	Analog Devices
File Size	450.28 KB
Description	Dual Fractional-N/Integer-N Frequency Synthesizer
Datasheet	ADF4251 Datasheet

General Description

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 detector), a precision charge pump, and a programmable reference divider.

The RF synthesizer has a ⌺-⌬ based fractional interpolator that allows programmable fractional-N division.

Overview

www.DataSheet4U.com Dual Fractional-N/Integer-N Frequency Synthesizer.

Key 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 Programmable Modulus on Fractional-N Synthesizer Trade-Off Noise versus Spurious Performance Software and Hardware Power-Down.

More Datasheets from Analog Devices

Part Number	Description
ADF4252	Dual Fractional-N/Integer-N Frequency Synthesizer
ADF4206	Dual RF PLL Frequency Synthesizers
ADF4207	Dual RF PLL Frequency Synthesizers
ADF4208	Dual RF PLL Frequency Synthesizers
ADF4210	Dual RF/IF PLL Frequency Synthesizers
ADF4211	Dual RF/IF PLL Frequency Synthesizers
ADF4212	Dual RF/IF PLL Frequency Synthesizers
ADF4213	Dual RF/IF PLL Frequency Synthesizers
ADF4216	Dual RF PLL Frequency Synthesizers
ADF4217	Dual RF PLL Frequency Synthesizers