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ADF4252BCPZ-R7

更新时间： 2024-11-04 14:48:59
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亚德诺 - ADI /
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31页 580K
描述
Dual Fractional-N/ Integer-N Frequency Synthesizer

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ADF4252BCPZ-R7 数据手册

 浏览型号ADF4252BCPZ-R7的Datasheet PDF文件第2页浏览型号ADF4252BCPZ-R7的Datasheet PDF文件第3页浏览型号ADF4252BCPZ-R7的Datasheet PDF文件第4页浏览型号ADF4252BCPZ-R7的Datasheet PDF文件第5页浏览型号ADF4252BCPZ-R7的Datasheet PDF文件第6页浏览型号ADF4252BCPZ-R7的Datasheet PDF文件第7页 
Dual Fractional-N/Integer-N  
Frequency Synthesizer  
Data Sheet  
ADF4252  
FEATURES  
GENERAL DESCRIPTION  
3.0 GHz fractional-N/1.2 GHz integer-N  
2.7 V to 3.3 V power supply  
Separate VP 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 vs. spurious performance  
The ADF4252 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 phase frequency detector (PFD), a  
precision charge pump, and a programmable reference divider.  
The RF synthesizer has a Σ-Δ-based fractional interpolator that  
allows programmable fractional-N division. The IF synthesizer  
has programmable integer-N counters. A complete phase-locked  
loop (PLL) can be implemented if the synthesizer is used with  
an external loop filter and voltage controlled oscillator (VCO).  
Control of all the on-chip registers is via a simple 3-wire interface.  
The device operates with a power supply ranging from 2.7 V to  
3.3 V and can be powered down when not in use.  
APPLICATIONS  
Base stations for mobile radio (GSM, PCS, DCS, CDMA, WCDMA)  
Wireless handsets (GSM, PCS, DCS, CDMA, WCDMA)  
Wireless LANs  
Communications test equipment  
CATV equipment  
FUNCTIONAL BLOCK DIAGRAM  
V
1
V
2
V
3
DV  
DD  
V
1
V
2
R
SET  
DD  
DD  
DD  
P
P
ADF4252  
REFERENCE  
4-BIT  
R COUNTER  
PHASE  
FREQUENCY  
DETECTOR  
2
CHARGE  
PUMP  
REF  
CP  
RF  
IN  
DOUBLER  
REF  
OUT  
LOCK  
DETECT  
OUTPUT  
MUX  
MUXOUT  
RF  
RF  
A
IN  
FRACTIONAL-N  
RF DIVIDER  
B
IN  
CLK  
DATA  
LE  
24-BIT  
DATA  
REGISTER  
IF  
IF  
B
IN  
INTEGER-N  
IF DIVIDER  
A
IN  
PHASE  
FREQUENCY  
DETECTOR  
CHARGE  
PUMP  
CP  
IF  
15-BIT  
R COUNTER  
2
DOUBLER  
A
1
A
2
D
CP  
1
CP  
2
GND  
GND  
GND  
GND  
GND  
Figure 1.  
Rev. C  
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.  
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 ©2003–2015 Analog Devices, Inc. All rights reserved.  
Technical Support  
www.analog.com  
 
 
 
 
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ADF4252BCPZ-R7 替代型号

型号 品牌 替代类型 描述 数据表
ADF4252BCPZ ADI

完全替代

 Dual Fractional-N/ Integer-N Frequency Synthe
ADF4252BCPZ-RL ADI

类似代替

 Dual Fractional-N/ Integer-N Frequency Synthe
ADF4252BCP ADI

功能相似

 Dual Fractional-N/Integer-N Frequency Synthesizer

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