Congjie Yang, Zhiyuan Gao, Xinji Zeng, S. Yao, Jing Gao
{"title":"一种用于雷达系统的动态范围超过90dB、帧速率为190k的线性阵列图像传感器无损读出电路","authors":"Congjie Yang, Zhiyuan Gao, Xinji Zeng, S. Yao, Jing Gao","doi":"10.1117/12.2182154","DOIUrl":null,"url":null,"abstract":"This paper presents a non-destructive readout circuit of the linear array image sensor with wide dynamic range and high speed readout for radar system. A multi-capacitor and self-regulated capacitive trans-impedance amplifier (CTIA) structure is employed to extend the dynamic range. The gain of the CTIA is auto adjusted by switching different capacitors to the integration node asynchronously according to the output voltage. A class AB OPA is utilized to drive all the additional capacitors to achieve high speed readout. A photo response curve presents as a polyline with 5 segments, which enables a 101.7 dB dynamic range. In addition, the exposure time is 5.12us in the simulation, then an over 190k fps is achieved.","PeriodicalId":225534,"journal":{"name":"Photoelectronic Technology Committee Conferences","volume":"30 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2015-04-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"A non-destructive readout circuit of the linear array image sensor with over 90dB dynamic range and 190k fps for radar system\",\"authors\":\"Congjie Yang, Zhiyuan Gao, Xinji Zeng, S. Yao, Jing Gao\",\"doi\":\"10.1117/12.2182154\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"This paper presents a non-destructive readout circuit of the linear array image sensor with wide dynamic range and high speed readout for radar system. A multi-capacitor and self-regulated capacitive trans-impedance amplifier (CTIA) structure is employed to extend the dynamic range. The gain of the CTIA is auto adjusted by switching different capacitors to the integration node asynchronously according to the output voltage. A class AB OPA is utilized to drive all the additional capacitors to achieve high speed readout. A photo response curve presents as a polyline with 5 segments, which enables a 101.7 dB dynamic range. In addition, the exposure time is 5.12us in the simulation, then an over 190k fps is achieved.\",\"PeriodicalId\":225534,\"journal\":{\"name\":\"Photoelectronic Technology Committee Conferences\",\"volume\":\"30 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2015-04-13\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Photoelectronic Technology Committee Conferences\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1117/12.2182154\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Photoelectronic Technology Committee Conferences","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1117/12.2182154","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
A non-destructive readout circuit of the linear array image sensor with over 90dB dynamic range and 190k fps for radar system
This paper presents a non-destructive readout circuit of the linear array image sensor with wide dynamic range and high speed readout for radar system. A multi-capacitor and self-regulated capacitive trans-impedance amplifier (CTIA) structure is employed to extend the dynamic range. The gain of the CTIA is auto adjusted by switching different capacitors to the integration node asynchronously according to the output voltage. A class AB OPA is utilized to drive all the additional capacitors to achieve high speed readout. A photo response curve presents as a polyline with 5 segments, which enables a 101.7 dB dynamic range. In addition, the exposure time is 5.12us in the simulation, then an over 190k fps is achieved.
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