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2010•Yibiao jishu yu chuanganqiRequires access

Design of Signal Generator Based on DDS Chip

Ding Hai-fei

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Abstract

The This paper introduced a signal generator based on DDS chip AD9833.The system adopted a combination of FPGA and AD9833,with the FPGA being the control center,AD9833 being the direct digital frequency synthesizer and AD8320 being the amplitude modulator.The device can produce sine wave,triangular wave and square wave,which all have the ability of adjusting the frequency,mgnitude and bias.The measurement result shows that the signal generator has little frequency error and high resclution.

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What this paper is about

The This paper introduced a signal generator based on DDS chip AD9833.The system adopted a combination of FPGA and AD9833,with the FPGA being the control center,AD9833 being the direct digital frequency synthesizer and AD8320 being the amplitude modulator.The device can produce sine wave,triangular wave and square wave,which all have the ability of adjusting the frequency,mgnitude and bias.The measurement result shows that the signal generator has little frequency error and high resclution.

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Available abstract

The This paper introduced a signal generator based on DDS chip AD9833.The system adopted a combination of FPGA and AD9833,with the FPGA being the control center,AD9833 being the direct digital frequency synthesizer and AD8320 being the amplitude modulator.The device can produce sine wave,triangular wave and square wave,which all have the ability of adjusting the frequency,mgnitude and bias.The measurement result shows that the signal generator has little frequency error and high resclution.

Key concepts: Signal generator, Sine wave, Generator (circuit theory), Direct digital synthesizer, SIGNAL (programming language), Chip, Square wave, Field-programmable gate array

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