A 4.6μm, 512×512, Ultra-Low Power Stacked Digital Pixel Sensor with Triple Quantization and 127dB Dynamic Range
2020 IEEE International Electron Devices Meeting (IEDM)
A 512×512 digital pixel sensor (DPS) in stacked CIS process for ultra-low power, ultra-wide dynamic range mobile computer vision applications is presented. Each 4.6µm DPS pixel has an ADC and 10-bit SRAM. We introduce a single exposure triple quantization (3Q) scheme to achieve 127dB DR while consuming 5.3mW at 30fps.