A Low Power Column-level High Speed Auto-zeroed Comparator for CMOS Active Pixel Sensor Based Vertex Detector

作者：Li Yan^*; Degerji, Yavuz; Ji Zhen

来源：Chinese Journal of Electronics, 2010, 19(1): 53-56.

• CMOS active pixel sensor
• Column-level comparator
• Auto-zeroed
• High-speed
• Low power

CMOS active pixel sensors have become strong candidates for pixel detectors used in high energy physical experiments. Using standard CMOS fabrication process, full data processing circuits can be integrated on the same substrate with sensors and on-chip data processing is achievable. For this purpose, a column level high speed low power auto-zeroed comparator is developed. Tested at 100MHz, a resolution better than 0.5mV was obtained and its output residual offset is only 0.15mVrms. The dimension of the comparator is 25 mu m x 300 mu m and its power dissipation is about 220 mu W.

• 出版日期2010-1
• 单位中国地震局; 深圳大学