Design of a Sine Sweeping Constant Current Source Based FPGA and DDS

Ya Ping Yu; Hui Zhao; Yuan Liu; Ren Jie Yang; Gui Mei Dong; Yuan Shuai Xing

doi:10.4028/www.scientific.net/AMR.936.2230

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 936Design of a Sine Sweeping Constant Current Source...

Design of a Sine Sweeping Constant Current Source Based FPGA and DDS

Abstract:

This paper designed a range of 0.1 ~ 250 kHz sine wave sweeping constant current source, which sine wave generator based on FPGA chip and DDS technology, the desired sine wave frequency was obtained by controlling the frequency control words. Low-pass filter circuit was realized by using the LTC1560-1, conversion circuit from the voltage to the current was consisted of a Howland current pump. The constant current source shows a good spectral impedance purity and amplitude.

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Periodical:

Advanced Materials Research (Volume 936)

Pages:

2230-2234

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.936.2230

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Online since:

June 2014

Authors:

Ya Ping Yu, Hui Zhao*, Yuan Liu, Ren Jie Yang, Gui Mei Dong, Yuan Shuai Xing

Keywords:

DDS, FPGA, Howland Current Pump, Sweeping Constant Current Source

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* - Corresponding Author

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