Datasheet > ADF4158_18

ADF4158_18

更新时间： 2022-02-26 14:07:29

品牌	Logo	应用领域
亚德诺 - ADI		/
页数	文件大小	规格书
35页	561K
描述
Direct Modulation/Waveform Generating Fractional-N Frequency Synthesizer

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ADF4158_18 数据手册

ADF4158

Data Sheet

APPLICATION OF ADF4158 IN FMCW RADAR

The ADF4158 in FMCW radar is used for generating ramps

(sawtooth or triangle) that are necessary for this type of radar to

operate. Traditionally, the PLL was driven directly by a direct digital

synthesizer (DDS) to generate the required type of waveform.

(the DAC driving the VCO directly) for generating FMCW ramps,

which suffered from VCO tuning characteristics nonlinearities

requiring compensation. The PLL method gives highly linear

ramps without the need for calibration.

Due to the implemented waveform generating mechanism on the

ADF4158, a DDS is no longer needed, which reduces cost. In

addition, the PLL solution has advantages over another method

The application of ADF4158 in FMCW radar is shown in

Figure 48.

5.1GHz

NO DDS REQUIRED

WITH ADF4158

76.5GHz

77.0GHz

5.1333GHz

LINEAR

FREQUENCY

SWEEP

REFERENCE

OSCILLATOR

26MHz

ADF4158

PLL

×5 ×3

VCO

MULTIPLY

×15

ANTENNA

ANTENNAS

AD9288

AD9203

ADSP-BF531 AD9235

BASEBAND

MICRO-

CONTROLLER

DSP

ADC

MUX

HPF

RANGE

16B

10B

12B

MIXER

COMPENSATION

AMP

BUS

CAN/FLEXRAY

Figure 48. FMCW Radar with ADF4158

Rev. I | Page 34 of 35

1...31 32 333435

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ADF4158CCPZ	ADI	获取价格	Direct Modulation/Waveform Generating, 6.1 GHz Fractional-N Frequency Synthesizer
ADF4158CCPZ-RL7	ADI	获取价格	Direct Modulation/Waveform Generating, 6.1 GHz Fractional-N Frequency Synthesizer
ADF4158WCCPZ	ADI	获取价格	Direct Modulation/Waveform Generating, 6.1 GHz Fractional-N Frequency Synthesizer
ADF4158WCCPZ-RL7	ADI	获取价格	Direct Modulation/Waveform Generating Fractional-N Frequency Synthesizer
ADF4159	ADI	获取价格	Direct Modulation/Fast Waveform Generating, 13 GHz, Fractional-N Frequency Synthesizer
ADF4159_14	ADI	获取价格	Direct Modulation/Fast Waveform Generating,
ADF4159CCPZ	ADI	获取价格	Direct Modulation/Fast Waveform Generating, 13 GHz, Fractional-N Frequency Synthesizer
ADF4159CCPZ-RL7	ADI	获取价格	Direct Modulation/Fast Waveform Generating, 13 GHz, Fractional-N Frequency Synthesizer
ADF4159WCCPZ	ADI	获取价格	Direct Modulation/Fast Waveform Generating,
ADF4159WCCPZ-RL7	ADI	获取价格	Direct Modulation/Fast Waveform Generating,