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

Pavel Baranov, Valeriy Borikov, Veronica Ivanova, Bien Bui Duc, Sergey Uchaikin, Cheng Yang Liu

Research output: Contribution to journalArticlepeer-review

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.

Original languageEnglish
Pages (from-to)103-110
Number of pages8
JournalActa IMEKO
Volume8
Issue number1
DOIs
Publication statusPublished - 1 Mar 2019

Keywords

  • Calibration
  • Common-mode rejection ratio
  • Differential input
  • Lock-in amplifier
  • Voltage dividers

ASJC Scopus subject areas

  • Instrumentation
  • Mechanical Engineering
  • Electrical and Electronic Engineering

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