机构

Nara Institute of Science and Technology

2 篇

ISSCC 2008Session 2Image Sensors
A 3.6pW/frame·pixel 1.35V PWM CMOS Imager with Dynamic Pixel Readout and no Static Bias Current
Keiichiro Kagawa1, 2, Sanshiro Shishido1, Masahiro Nunoshita1, Jun Ohta1, 1
compatible with deep submicron logic circuits enables new imager applications, such as disposable medical cameras and autonomous wireless security cameras on a chip. Pulse width modulation (PWM) [1-2]
Nara Institute of Science and Technology, Ikoma, Japan Osaka
ISSCC 2008Session 2Image Sensors
A 3.6pW/frame·pixel 1.35V PWM CMOS Imager with Dynamic Pixel Readout and no Static Bias Current
Keiichiro Kagawa1, 2, Sanshiro Shishido1, Masahiro Nunoshita1, Jun Ohta1, 1
该论文提出了一种基于脉冲宽度调制（PWM）的CMOS图像传感器，采用动态像素读出和无静态偏置电流设计，在1.35V低电压供电下实现了3.6pW/frame·pixel的超低功耗。解决了传统像素中静态偏置电流导致功耗高的问题，使传感器兼容深亚微米逻辑工艺，适用于一次性医疗相机和自主无线安全相机等新应用。
▸提出了无静态偏置电流的PWM像素结构，通过动态像素读出大幅降低功耗。
▸采用大于1的电压增益抑制脉冲编码抖动噪声，在低电源电压下保持高信噪比。
Nara Institute of Science and Technology, Ikoma, Japan Osaka 3.6pW/frame·pixel功耗，1.35V供电