A 0.4v Self-Powered Cmos Imager With 140db Dynamic Range And Energy Harvesting
2015 Symposium on VLSI Circuits (VLSI Circuits)（2015）
摘要
A 0.4V self-powered 96x96-pixel PWM imager is proposed and prototyped in standard 0.18 mu m CMOS technology. A dual-exposure extended-counting (DEEC) PWM sensor is developed to achieve a 140dB dynamic range with a boost of 53dB. The chip consumes 12.1 mu W at 12fps and 38.4 mu W at 60fps, results in an iFoM of 53.7 and 33.9 fJ/pixel. code, respectively. Optical energy harvesting (OEH) mode is implemented to generate 459mV and 3.21 mu W at 100klux (sunny day) and achieve a self-powered imaging at 15fps.
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关键词
self-powered CMOS imager,self-powered PWM imager,dual-exposure extended-counting PWM sensor,DEEC PWM sensor,optical energy harvesting,OEH,voltage 0.4 V,gain 140 dB,size 0.18 mum,gain 53 dB,power 12.1 muW,power 38.4 muW,voltage 459 mV,power 3.21 muW
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