title   
  

Digital pixel readout integrated circuit architectures for LWIR

Shafique, Atia and Yazıcı, Melik and Kayahan, Hüseyin and Ceylan, Ömer and Gürbüz, Yaşar (2015) Digital pixel readout integrated circuit architectures for LWIR. In: 41st Conference on Infrared Technology and Applications, Baltimore, MD

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Official URL: http://dx.doi.org/10.1117/12.2177551

Abstract

This paper presents and discusses digital pixel readout integrated circuit architectures for long wavelength infrared (LWIR) in CMOS technology. Presented architectures are designed for scanning and staring arrays type detectors respectively. For scanning arrays, digital time delay integration (TDI) is implemented on 8 pixels with sampling rate up to 3 using CMOS 180nm technology. Input referred noise of ROIC is below 750 rms electron meanwhile power dissipation is appreciably under 30mW. ROIC design is optimized to perform at room as well as cryogenic temperatures. For staring type arrays, a digital pixel architecture relying on coarse quantization with pulse frequency modulation (PFM) and novel approach of extended integration is presented.. It can achieve extreme charge handling capacity of 2.04Ge(-) with 20 bit output resolution and power dissipation below 350 nW in CMOS 90nm technology. Efficient mechanism of measuring the time to estimate the remaining charge on integration capacitor in order to achieve low SNR has employed.

Item Type:Papers in Conference Proceedings
Additional Information:Article Number: 94510V
Uncontrolled Keywords:Infrared (IR); Digital readout integrated circuit (DROIC); pixel parallel ADC; pulse frequency modulation (PFM); digital time delay integration (TDI)
Subjects:UNSPECIFIED
ID Code:28053
Deposited By:Yaşar Gürbüz
Deposited On:20 Dec 2015 23:00
Last Modified:20 Dec 2015 23:00

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