作者
Xiaochuan Guo, Xin Qi, John G Harris
发表日期
2007/6/25
期刊
IEEE Sensors Journal
卷号
7
期号
8
页码范围
1165-1175
出版商
IEEE
简介
A time-to-first-spike (TTFS) imager was designed such that each pixel outputs a single digital pulse whose timing encodes pixel illumination. For still image applications, this time representation provides a tremendous increase in dynamic range, similar to that of other existing time-based imagers. However, a major advantage of the TTFS imager is that this wide dynamic range can be achieved even for 30 frames/s video applications. A prototype 32times32 TTFS image sensor was fabricated in AMI 0.5 mum CMOS technology. The prototype chip demonstrates a 104 dB dynamic range (limited by the optical equipment), 42 V/electron conversion gain, 1.25 nA/cm 2 dark current, and 3.1 mW power consumption at 30 frames/s.
学术搜索中的文章
X Guo, X Qi, JG Harris - IEEE Sensors Journal, 2007