一种低功耗GaN基紫外焦平面读出电路设计  

Design of a Low-power Readout Circuit for GaN-based UV FPA

作　　者：叶柏松[1,2] 袁永刚[1] 马丁[1] 李向阳[1] 

机构地区：[1]中国科学院上海技术物理研究所红外成像与器件重点实验室,上海200083 [2]中国科学院大学,北京100039

出　　处：《科学技术与工程》2013年第19期5482-5486,共5页Science Technology and Engineering

基　　金：国家自然科学基金(61204134;61106097);江苏省产学研与常州市科技支撑项目(SBY201120177;CM20103004;CE20110025);中国科学院院地合作项目(BE2010056)共同资助

摘　　要：针对GaN基紫外焦平面,采用单端放大器的CTIA结构作为输入级,设计了一种小面积低功耗的读出电路,分析了电路的电荷增益、注入效率、功耗与噪声等性能指标。通过使用边积分边读出模式工作,电路功耗显著下降,当面阵大小为M×N时,仅与列数N有关。仿真结果表明,电路工作正常,电荷增益为1.6μV/e,注入效率可达96.8%,输出线性度大于99%,对噪声具有很好的抑制作用。A novel small-area low-power readout circuit utilized by a single CTIA amplifier for GaN-base UV FPA is presented. The charge-gain, injection efficiency, power, noise and other parameters are discussed in de- tails. With the method of integrating while reading out, the power dissipation is reduced greatly and only related to the value of N when the array is M×N. The simulated results show that the circuit can work normally, the charge-gain is 1.6μV/e, the injection efficiency is over 96. 8%, the linearity of the output is larger than 99% , and the noise could be restrained remarkably.

关 键 词：紫外焦平面 读出电路 功耗 面积 

分 类 号：TN23[电子电信—物理电子学]