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Analog Devices - Phase Detector/Frequency Synthesizer

Numéro de référence ADF4002
Description Phase Detector/Frequency Synthesizer
Fabricant Analog Devices 
Logo Analog Devices 





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ADF4002 fiche technique
Data Sheet
Phase Detector/Frequency Synthesizer
ADF4002
FEATURES
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
APPLICATIONS
Clock conditioning
Clock generation
IF LO generation
GENERAL DESCRIPTION
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.
REFIN
CLK
DATA
LE
RFINA
RFINB
AVDD DVDD
24-BIT INPUT
REGISTER 22
SDOUT
FUNCTIONAL BLOCK DIAGRAM
VP CPGND
REFERENCE
RSET
14-BIT
R COUNTER
14
R COUNTER
LATCH
FUNCTION
LATCH
N COUNTER
LATCH
PHASE
FREQUENCY
DETECTOR
CHARGE
PUMP
CP
LOCK
DETECT
CURRENT
SETTING 1
CURRENT
SETTING 2
CPI3 CPI2 CPI1 CPI6 CPI5 CPI4
AVDD
SDOUT
MUX
HIGH Z
MUXOUT
13-BIT
N COUNTER
M3 M2 M1
ADF4002
CE AGND DGND
Figure 1.
Rev. D
Document Feedback
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responsibilityisassumedbyAnalogDevices for itsuse,nor foranyinfringementsofpatentsor other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700 ©2006–2015 Analog Devices, Inc. All rights reserved.
Technical Support
www.analog.com

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