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Analog Devices - PLL Frequency Synthesizer

Numéro de référence ADF4106
Description PLL Frequency Synthesizer
Fabricant Analog Devices 
Logo Analog Devices 





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ADF4106 fiche technique
Data Sheet
PLL Frequency Synthesizer
ADF4106
FEATURES
GENERAL DESCRIPTION
6.0 GHz bandwidth
2.7 V to 3.3 V power supply
Separate charge pump supply (VP) allows extended
tuning voltage in 3 V systems
Programmable dual-modulus prescaler
8/9, 16/17, 32/33, 64/65
Programmable charge pump currents
Programmable antibacklash pulse width
3-wire serial interface
Analog and digital lock detect
Hardware and software power-down mode
The ADF4106 frequency synthesizer can be used to implement
local oscillators in the up-conversion and down-conversion
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, programmable
A counter and B counter, and a dual-modulus prescaler (P/P + 1).
The A (6-bit) counter and B (13-bit) counter, in conjunction
with the dual-modulus prescaler (P/P + 1), implement an N
divider (N = BP + A). In addition, the 14-bit reference counter
(R Counter) allows selectable REFIN frequencies at the PFD
input. A complete phase-locked loop (PLL) can be implemented
APPLICATIONS
if the synthesizer is used with an external loop filter and voltage
controlled oscillator (VCO). Its very high bandwidth means
Broadband wireless access
Satellite systems
Instrumentation
that frequency doublers can be eliminated in many high
frequency systems, simplifying system architecture and
reducing cost.
Wireless LANS
Base stations for wireless radios
FUNCTIONAL BLOCK DIAGRAM
AVDD DVDD
VP CPGND
RSET
REFERENCE
REFIN
CLK
DATA
LE
RFINA
RFINB
14-BIT
R COUNTER
14
R COUNTER
LATCH
24-BIT INPUT
REGISTER 22
FUNCTION
LATCH
SDOUT
FROM
FUNCTION
LATCH
A, B COUNTER
LATCH
13
N = BP + A
13-BIT
B COUNTER
PRESCALER
P/P + 1
LOAD
LOAD
6-BIT
A COUNTER
CE AGND DGND
6
PHASE
FREQUENCY
DETECTOR
CHARGE
PUMP
CP
LOCK
DETECT
CURRENT
SETTING 1
CURRENT
SETTING 2
CPI3 CPI2 CPI1 CPI6 CPI5 CPI4
HIGH Z
19 AVDD
MUX
MUXOUT
SDOUT
M3 M2 M1
ADF4106
Figure 1.
Rev. F
Document Feedback
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or 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 ©2001–2015 Analog Devices, Inc. All rights reserved.
Technical Support
www.analog.com

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