New design structure of a direct-injection input circuit with adaptive gain control techniques

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

doi:10.1117/12.328008

26 October 1998 New design structure of a direct-injection input circuit with adaptive gain control techniques

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

Proceedings Volume 3436, Infrared Technology and Applications XXIV; (1998) https://doi.org/10.1117/12.328008
Event: SPIE's International Symposium on Optical Science, Engineering, and Instrumentation, 1998, San Diego, CA, United States

Abstract

Based on the application of the direct injection for per detector (DI) input technique, a new readout structure for the infrared (IR) focal-plane-array (FPA), called the variable gain direct inject per detector (VGDI) is proposed and analyzed. The readout circuit of VGDI of a unit cell of photo- voltaic sensor under investigation, is composed of a direct inject per detector circuit, high gain amplifier, and the reset switch. The VGDI readout chip has been designed in 0.5 micrometer double-poly-double-metal (DPDM) n-well CMOS technology in various formats from 8 X 8 to 128 X 128. The simulation 8 X 8 VGDI of the readout chip have successfully verified both the readout function and performance. The high gain, low power, high sensitivity readout performances are achieved in a 50 X 50 micrometer² pixel size.

Citation Download Citation

Yuan Lung Chin, Tai Ping Sun, Wen Yaw Chung, Jung Chuan Chou, and Shen Kan Hsiung "New design structure of a direct-injection input circuit with adaptive gain control techniques", Proc. SPIE 3436, Infrared Technology and Applications XXIV, (26 October 1998); https://doi.org/10.1117/12.328008

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