一种低延时、低功耗电压比较器  

Voltage Comparator with Low Delay Time and Low Power Consumption

作　　者：赖小峰[1] 孟丽娅[1] 刘昊[1] 袁祥辉[1] 

机构地区：[1]重庆大学光电技术及系统教育部重点实验室,重庆400044

出　　处：《电子器件》2009年第4期746-748,752,共4页Chinese Journal of Electron Devices

基　　金：国家自然科学基金资助项目(60702007)

摘　　要：设计了一种用于大动态范围CMOS图像传感器的OTA(运算跨导放大器)低功耗、低延时电压比较器。该电压比较器以标准OTA电路为基础,使用了非对称的拓扑结构。用0.6μmDPDM标准数字CMOS工艺参数仿真,在3.3V供电电源下,功耗2.0μW,电路最小延时9ns。将该电压比较器应用到大动态范围图像传感器读出电路中,实现了预期目标。A kind of OTA voltage eomparator, featured in low delay time and low power consumption, which used in ultra-wide dynamic range CMOS image sensor is presented. This comparator of non-symmetrical topology is based on standard OTA circuit. Simulated with 0. 6 μm DPDM Standard digital CMOS process parameters, the comparator has power consumption of 2μW （under 3.3 V power supply） and minimal delay time of 9 ns. The simulation results show that the desired goal can be achieved by the readout circuit using this comparator.

关 键 词：CMOS 比较器 低功耗 低延时 

分 类 号：TN432[电子电信—微电子学与固体电子学]