红外与毫米波学报2026，Vol.45Issue(3)：427-437,11.DOI:10.11972/j.issn.1001-9014.2026.03.010
基于双CTIA的热释电红外探测器读出电路设计
Design of readout circuit for pyroelectric infrared detectors based on dual-CTIA structure
摘要
Abstract
To achieve the detection of extremely weak signals from pyroelectric infrared detectors and to meet the demands of high-sensitivity applications,this paper proposes a dual-capacitor transimpedance amplifier(CTIA)readout structure featuring a variable array size.Additionally,a bandgap reference and a low dropout regulator(LDO)are designed as the bias circuit to provide voltage bias,in order to meet the requirements of low noise,low power consumption,large dynamic range and portability.The circuit is designed in TSMC 0.18μm 1P6M CMOS process under a 3.3V supply.For the layout implementation,advanced techniques,including dummy structures and guard rings,are employed to improve device matching,overall layout symmetry,as well as the noise immunity and electrical stability of the analog circuitry.关键词
热释电/读出电路/双CTIA/可变阵列规模/偏置电路Key words
pyroelectric/readout circuit/dual-CTIA/variable array size/bias circuit分类
信息技术与安全科学引用本文复制引用
叶志瑶,王建禄,唐唯译,曾涛,林铁,黄张成,陈艳,吴广健,王旭东,沈宏..基于双CTIA的热释电红外探测器读出电路设计[J].红外与毫米波学报,2026,45(3):427-437,11.基金项目
Supported by the National Natural Science Foundation of China(62025405) （62025405）
the National key research and development program in the 14th five year plan(2021YFA1200700) （2021YFA1200700）
the Zhejiang Provincial Natural Science Foundation of China(LD25F040001). （LD25F040001）
