Lock-in amplifier with a high common-mode rejection ratio in the range of 0.02 to 100 kHz

Authors

  • Pavel Baranov National Research Tomsk Polytechnic University
  • Valeriy Borikov
  • Veronica Ivanova
  • Bien Bui Duc
  • Sergey Uchaikin
  • Cheng-Yang Liu

DOI:

https://doi.org/10.21014/acta_imeko.v8i1.672

Abstract

The paper presents a new lock-in amplifier with a differential input. The lock-in amplifier has a high common-mode rejection ratio of 200 dB at 1 kHz and 160 dB in the frequency range of 20 Hz to 100 kHz. A method for extending the dynamic range of comparing signals is suggested. The experimental results of metrological characteristic tests are discussed.

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Published

2019-03-31

Issue

Section

Research Papers