Lock-in amplifier with a high common-mode rejection ratio in the range of 0.02 to 100 kHz
DOI:
https://doi.org/10.21014/acta_imeko.v8i1.672Abstract
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
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Research Papers
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