Design of low noise electrical system for uncooled long wave infrared imaging. Issue 6 (March 2020)

• Record Type: Journal Article
• Authors: Zhu, Depeng; Zhan, Weida; Tian, Yong; Wei, Ranran; Hao, Ziqiang; Tang, Yanfeng
• Is Part Of: IOP conference series. Volume 768:Issue 6(2020)
• Publication Date: 2020-03
• Subjects: Materials science -- Periodicals; 620.1105
• DOI: 10.1088/1757-899X/768/6/062026
• Languages: English
• ISSNs: 1757-8981

Abstract

Abstract: The research and design of low-noise imaging circuit is of great significance to enhance the imaging quality of the detector. To improve the imaging quality of an uncooled infrared imaging system, a low noise imaging circuit is designed. The generation scheme of bias voltage is emphasized, and the design methods of timing drive module and ADC conversion module are briefly described. A filter with a pass-band cutoff frequency of 1 Hz is designed at the bias voltage output to filter out high-frequency noise. The experimental results show that the precision of bias voltage is over 98% and the RMS noise of bias voltage below 1kHz is 1.4uV. The feasibility of other modules is verified by simulation and experiment.