A 1.1e- Temporal Noise 1/3.2-inch 8Mpixel CMOS Image Sensor using Pseudo-Multiple Sampling

📋 论文概要

本文提出一种采用伪多采样技术的CMOS图像传感器，在1/3.2英寸光学格式下实现了8Mpixel分辨率，并将时间噪声降低至1.1e-，有效解决了传统读出电路噪声问题。

💡 主要创新点

• 提出伪多采样（Pseudo-Multiple Sampling）技术，通过重复采样同一像素并处理来降低像素和读出电路的时间噪声。
• 在CMOS图像传感器读出链前端使用预放大器抑制后续电路噪声，结合伪多采样实现极低噪声性能。

🏷 关键词

📄 原文摘要

Youngkyun Jeong, Seungjin Lee, Hansoo Lee, Sin-Hwan Lim, Yunseok Han, Jinwoo Kim, Jaecheol Yun, Seogheon Ham, Yun-Tae Lee Samsung Electronics, Yongin, Korea The noise performance of CMOS image sensors has improved significantly. The most popular way to reduce readout circuit noise is amplifying pixel output using a preamplifier at the foremost stage of readout chain to suppress the noise of following readout chains in high analog gain [1-3]. Another approach is multiple sampling which can reduce temporal noise of pixel and readout circuit by sampling the same pixel repeatedly and processing (generally averaging) the sampled data [4, 5]. However, both approaches require additional circuitry in the column readout chain which requires extra silicon area and power consumption. Furthermore, it is hard to implement a decent per-column amplifier in a small pixel pitch sensor, such as 1.4µm pixel, because of narrow layout space. In addition, the second approach requires longer readout time pro

👥 作者与机构

Yong Lim, Kyoungmin Koh, Kyungmin Kim, Han Yang, Juha Kim,