苗鑫
（沐曦集成电路（南京）有限公司，江苏 南京 210000）
摘要：基于XC7K325T FPGA逻辑控制和AD9783数模转换模块设计一款低噪声三角波信号发生器，输出阻抗为50 Ω，电平噪声小于5 mV的低噪声三角波调制信号。实测结果表明，该发生器与专用的信号发生器相比，其输出的三角波调制信号电平噪声较低，提高了三角波信号发生器的信号质量。
关键词：XC7K325T FPGA逻辑控制；AD9783数模转换；三角波信号发生器；三角波调制信号
中图分类号：TP274.2 文献标志码：A 文章编号：1674-2605(2023)04-0004-06
DOI：10.3969/j.issn.1674-2605.2023.04.004
Design of Low Noise Triangular Wave Signal Generator Based on FPGA
MIAO Xin
(MetaX Integrated Circuits(Nanjing) Co., Ltd., Nanjing 210000, China)
Abstract: Design a low noise triangular wave signal generator based on XC7K325T FPGA logic control and AD9783 analog-to-digital conversion module. The output impedance is 50 Ω, and the level noise is less than 5 mV for a low noise triangular wave modulation signal. The actual measurement results show that compared with a dedicated signal generator, the generator outputs a triangular wave modulation signal with lower level noise, which improves the signal quality of the triangular wave signal generator.
Keywords: XC7K325T FPGA logic control; AD9783 digital to analog conversion; triangular wave signal generator; triangular wave modulation signal
