Novel CMOS readout techniques for uncooled pyroelectric IR FPA

Tai Ping Sun; Yuan Lung Chin; Wen Yaw Chung; Shen Kan Hsiung; Jung Chuan Chou

doi:10.1117/12.321763

14 September 1998 Novel CMOS readout techniques for uncooled pyroelectric IR FPA

Tai Ping Sun, Yuan Lung Chin, Wen Yaw Chung, Shen Kan Hsiung, Jung Chuan Chou

Proceedings Volume 3360, Infrared Readout Electronics IV; (1998) https://doi.org/10.1117/12.321763
Event: Aerospace/Defense Sensing and Controls, 1998, Orlando, FL, United States

Abstract

Based on the application of the source follower per detector (SFD) input biasing technique, a new redout structure for the IR focal-plane-array (FPA), called the variable gain source follower per detector (VGSFD) is proposed and analyzed. The readout circuit of VGSFD of a unit cell of pyroelectric sensor under investigation, is composed of a source follower per detector circuit, high gain amplifier, and the reset switch. The VGSFD readout chip has been designed in 0.5 micrometers double-poly-double-metal n-well CMOS technology in various formats from 8 by 8 to 128 by 128. The experimental 8 by 8 VGSFD measurement results of the fabricated readout chip at room temperature have successfully verified both the readout function and performance. The high gain, low power, high sensitivity readout performances are achieved in a 50 by 50 micrometers ² pixel size.

Citation Download Citation

Tai Ping Sun, Yuan Lung Chin, Wen Yaw Chung, Shen Kan Hsiung, and Jung Chuan Chou "Novel CMOS readout techniques for uncooled pyroelectric IR FPA", Proc. SPIE 3360, Infrared Readout Electronics IV, (14 September 1998); https://doi.org/10.1117/12.321763

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