This paper proposes a sub-1-V CMOS image sensor using a time-based readout (TBR) circuit. The proposed TBR circuit senses the moment of event from the pixel instead of reading the voltage signal. This allows the use of low power-supply voltage in pixel, providing sufficient dynamic range. The prototype chip was fabricated with a 0.13-μm standard CMOS logic process, and whole circuits were designed with thin-oxide gate transistors only. The measurement results show a 54.2-dB dynamic range with 0.75-V power-supply voltage.
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Electrical and Electronic Engineering