Human Retinal Photoreceptor-Inspired Sensor with Adjustable Gain from 0.1–10⁶ and Wide Dynamic Range Over 140dB

Abstract

Inspired by a human retina, we report on a sensor that is formed by a photodiode-body-biased MOSFET (PD-MOSFET). Study suggests that the proposed sensor behaves similarly to a human retinal photoreceptor in terms of photosensing functionalities with a gain tunable from 0.1 to 10 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">6</sup> , a dynamic range of >140dB in a broad spectral range from 400nm to 1000nm.