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ADF4007BCP-REEL PDF预览

ADF4007BCP-REEL

更新时间: 2024-11-04 22:05:19
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亚德诺 - ADI /
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描述
High Frequency Divider/PLL Synthesizer

ADF4007BCP-REEL 数据手册

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High Frequency Divider/PLL Synthesizer  
ADF4007  
FEATURES  
GENERAL DESCRIPTION  
7.5 GHz bandwidth  
The ADF4007 is a high frequency divider/PLL synthesizer that  
can be used in a variety of communications applications. It can  
operate to 7.5 GHz on the RF side and to 120 MHz at the PFD.  
It consists of a low noise digital PFD (phase frequency  
detector), a precision charge pump, and a divider/prescaler. The  
divider/ prescaler value can be set by two external control pins  
to one of four values (8, 16, 32, or 64). The reference divider is  
permanently set to 2, allowing an external REFIN frequency of  
up to 240 MHz.  
Maximum PFD frequency of 120 MHz  
Divide ratios of 8, 16, 32, or 64  
2.7 V to 3.3 V power supply  
Separate charge pump supply (VP) allows  
extended tuning voltage in 3 V systems  
R
SET contol of charge pump current  
Hardware power-down mode  
APPLICATIONS  
Satellite communications  
Broadband wireless access  
CATV  
Instrumentation  
Wireless LANs  
A complete PLL (phase-locked loop) can be implemented if the  
synthesizer is used with an external loop filter and a VCO  
(voltage controlled oscillator). Its very high bandwidth means  
that frequency doublers can be eliminated in many high  
frequency systems, simplifying system architecture and  
reducing cost.  
FUNCTIONAL BLOCK DIAGRAM  
V
V
CPGND  
R
SET  
P
DD  
REFERENCE  
ADF4007  
PHASE  
FREQUENCY  
DETECTOR  
REF  
R COUNTER  
CHARGE  
PUMP  
IN  
CP  
÷ 2  
MUXOUT  
MUX  
N COUNTER  
÷ 8, ÷ 16,  
÷ 32, ÷ 64  
RF  
RF  
A
B
IN  
IN  
N2  
N1  
GND  
M2  
M1  
Figure 1.  
Rev. 0  
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. Trademarks and  
registered trademarks are the property of their respective owners.  
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.  
Tel: 781.329.4700  
Fax: 781.326.8703  
www.analog.com  
© 2004 Analog Devices, Inc. All rights reserved.  

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