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ADF4158WCCPZ-RL7

更新时间： 2024-12-02 01:23:15
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Direct Modulation/Waveform Generating Fractional-N Frequency Synthesizer

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ADF4158WCCPZ-RL7 数据手册

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Direct Modulation/Waveform Generating,  
6.1 GHz, Fractional-N Frequency Synthesizer  
Data Sheet  
ADF4158  
FEATURES  
GENERAL DESCRIPTION  
Radio frequency (RF) bandwidth to 6.1 GHz  
The ADF4158 is a 6.1 GHz, fractional-N frequency synthesizer  
25-bit fixed modulus allows subhertz frequency resolution  
Frequency and phase modulation capability  
Sawtooth and triangular waveforms in the frequency domain  
Parabolic ramp  
Ramp superimposed with FSK  
Ramp with 2 different sweep rates  
Ramp delay  
Ramp frequency readback  
Ramp interruption  
2.7 V to 3.3 V power supply  
Separate VP allows extended tuning voltage  
Programmable charge pump currents  
3-wire serial interface  
Digital lock detect  
Power-down mode  
Cycle slip reduction for faster lock times  
Switched bandwidth fast lock mode  
Qualified for automotive applications  
with direct modulation and waveform generation capability. It  
contains a 25-bit fixed modulus, allowing subhertz resolution at  
6.1 GHz. It consists of a low noise digital phase frequency  
detector (PFD), a precision charge pump, and a programmable  
reference divider. There is a sigma-delta (Σ-Δ) based fractional  
interpolator to allow programmable fractional-N division. The  
INT and FRAC registers define an overall N-divider as N = INT +  
(FRAC/225).  
The ADF4158 can be used to implement frequency shift keying  
(FSK) and phase shift keying (PSK) modulation. There are also  
a number of frequency sweep modes available that generate  
various waveforms in the frequency domain, for example,  
sawtooth and triangular waveforms. The ADF4158 features  
cycle slip reduction circuitry, which leads to faster lock times,  
without the need for modifications to the loop filter.  
Control of all 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  
Frequency modulated continuous wave (FMCW) radar  
Communications test equipment  
FUNCTIONAL BLOCK DIAGRAM  
AV  
DV  
V
R
SET  
DD  
DD  
P
ADF4158  
SW2  
CP  
REFERENCE  
5-BIT  
R-COUNTER  
×2  
REF  
IN  
DOUBLER  
÷2  
DIVIDER  
+
PHASE  
CHARGE  
PUMP  
FREQUENCY  
DETECTOR  
V
DD  
–
HIGH-Z  
CSR  
DGND  
LOCK  
DETECT  
SW1  
FL SWITCH  
O
OUTPUT  
MUX  
V
MUXOUT  
CE  
DD  
R
DIV  
DIV  
N
RF  
A
B
IN  
N-COUNTER  
TX  
DATA  
RF  
IN  
THIRD-ORDER  
FRACTIONAL  
INTERPOLATOR  
CLK  
MODULUS  
25  
2
FRACTION  
REG  
INTEGER  
REG  
32-BIT  
DATA  
REGISTER  
DATA  
LE  
AGND  
DGND  
CPGND  
Figure 1.  
Rev. I  
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 ©2010–2018 Analog Devices, Inc. All rights reserved.  
Technical Support  
www.analog.com  
 
 
 
 
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ADF4158WCCPZ-RL7 替代型号

型号 品牌 替代类型 描述 数据表
ADF4158WCCPZ ADI

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 Direct Modulation/Waveform Generating, 6.1 GHz Fractional-N Frequency Synthesizer

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