| 基于DDS数控信号发生器 |
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| 引用本文： | 林夕伟.基于DDS数控信号发生器[J].浙江教育学院学报,2008(4):82-86. |
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| 作者姓名： | 林夕伟 |
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| 作者单位： | 浙江教育学院信息学院,浙江杭州,310012 |
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| 摘 要： | 以DDS芯片AD9850产生正弦波形为基础，利用比较器、放大器、DAC和乘法器电路构成频率、相位和振幅均可数控的多种波形信号发生器．该信号发生器的频率在AD9850内部实现数控功能，振幅通过DAC芯片控制乘法器的输入比例因子实现数控功能，从而可以精确地设置波形的频率和振幅，降低波形失真度．
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| 关 键 词： | DDS 信号发生器 DAC 线性乘法器 数控 波形失真 |
Numerical Control Signal Generating Using DDS |
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| LIN Xiwei.Numerical Control Signal Generating Using DDS[J].Journal of ZHEJIANG Education Institute,2008(4):82-86. |
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| Authors: | LIN Xiwei |
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| Institution: | LIN Xiwei (Information School, Zhejiang Education Institute, Hangzhou 310012, China) |
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| Abstract: | AD9850, which is a kind of DDS chip,generates sine wave. Comparator, amplifier, DAC and multiplier are adopted to generate various waveforms based on sine wave. All kinds of waveforms can be adjusted on frequency, phase and amplitude. The NC frequency is performed inside AD9850. DAC adjusts the input voltages of multiplier to performing NC amplitude. It sets precise frequency and amplitude of waveform, and reduces wave distortion. |
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| Keywords: | DDS DAC |
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