A low noise high readout speed 512×128 ROIC for shortwave InGaAs FPA

SongLei Huang; Zhangcheng Huang; Yu Chen; Hengjing Tang; Jiaxiong Fang

doi:10.1117/12.2178127

4 March 2015 A low noise high readout speed 512×128 ROIC for shortwave InGaAs FPA

SongLei Huang, Zhangcheng Huang, Yu Chen, Hengjing Tang, Jiaxiong Fang

Proceedings Volume 9521, Selected Papers from Conferences of the Photoelectronic Technology Committee of the Chinese Society of Astronautics 2014, Part I; 95211J (2015) https://doi.org/10.1117/12.2178127
Event: Selected Proceedings of the Photoelectronic Technology Committee Conferences held August-October 2014, 2014, China, China

Abstract

A low noise high readout speed 512×128 readout Integrated circuit (ROIC) based on capacitance trans-impedance amplifier (CTIA) is designed in this paper. The ROIC is flip-chip bonded with Indium bumps to InGaAs detectors which cutoff wavelength is 1.7μm, as a hybrid structure (InGaAs FPA). The ROIC with 30μm pixel pitch and 50fF integrated capacitance, is fabricated in 0.5μm DPTM CMOS process. The results show that output noise is about 3.0E-4V which equivalent readout noise is 95e-, output voltage swing is better than 2.5V; the dynamic range of InGaAs FPA reaches 69.7dB@2ms, and the power dissipation is about 175mw. The peak detectivity of InGaAs FPA reaches 2E12cmHz^1/2w^-1 at 300K without TEC cooling.

Citation Download Citation

SongLei Huang, Zhangcheng Huang, Yu Chen, Hengjing Tang, and Jiaxiong Fang "A low noise high readout speed 512×128 ROIC for shortwave InGaAs FPA", Proc. SPIE 9521, Selected Papers from Conferences of the Photoelectronic Technology Committee of the Chinese Society of Astronautics 2014, Part I, 95211J (4 March 2015); https://doi.org/10.1117/12.2178127

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