JOURNAL OF LIGHT INDUSTRY

CN 41-1437/TS  ISSN 2096-1553

Volume 30 Issue 3-4
September 2015
Article Contents
JIANG Li-ying, YUE Bao-lei, LIANG Mao, et al. An improved weak current low noise amplifier application circuit[J]. Journal of Light Industry, 2015, 30(3-4): 118-122. doi: 10.3969/j.issn.2095-476X.2015.3/4.026
Citation: JIANG Li-ying, YUE Bao-lei, LIANG Mao, et al. An improved weak current low noise amplifier application circuit[J]. Journal of Light Industry, 2015, 30(3-4): 118-122. doi: 10.3969/j.issn.2095-476X.2015.3/4.026 shu

An improved weak current low noise amplifier application circuit

  • Received Date: 2014-11-04
    Available Online: 2015-09-15
  • In order to solve the problem in weak current signal detection technology that the interference of background noise,circuit noise and component noise is stronger than signal itself,a weak current low noise amplifier application circuit was designed.The model improved T-type I/V conversion circuit by adopting high precision and small resistance value feed back resistance and high performance operational amplifier AD795,set up preamplifier circuit by high performance discrete elements and designed phrase-locked amplifier circuit based on modulation and demodulation principle.The simulation analysis showed that the circuit had higher noise suppression capability and stability and could meet the weak current measurement requirement of various sensors.
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