WORKSHOP PAPER
Digital Pixel Sensor using Frame Averaging Unit for Fixed-Pattern Noise Correction and Pixel Size Reduction
Tsung-Hsun Tsai1, Raffaele Capoccia1, Kwuang-Han Chang2, Hao-Ming Hsu2, Yi-Hsuan Lin2, Chien-Chun Lee2, Chiao Liu1
1Meta, Redmond, WA
2Brillnics Inc., Hsinchu, Taiwan

Abstract

Digital pixel sensors (DPS) have low-power, high dynamic range (HDR), and high-speed capabilities, suitable for applications requiring better performance over that provided by conventional CMOS image sensors. However, integrating an in-pixel analog-to-digital convertor (ADC) in a small pixel size leads to increased fixed-pattern noise (FPN) and degraded low-light performance. In this work, a frame averaging unit (FAU) is developed to enable on-sensor FPN correction (FPNC) without increasing the pixel size. The developed approach achieves a 3.24-µm pixel size, delivering a temporal noise of 4.4 e-rms and an FPN of 2.4 e-rms.
Year: 2025
Workshop: IISW
URL: https://doi.org/10.60928/lzwu-llvc
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Keywords

Digital pixel sensor (DPS), fixed-pattern noise (FPN), frame averaging unit (FAU),

References

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