| 短波红外焦平面弱信号读出的高帧频模拟链路设计 |
| |
| 引用本文： | 王攀,丁瑞军,叶振华.短波红外焦平面弱信号读出的高帧频模拟链路设计[J].红外与激光工程,2014,43(5):1370-1374. |
| |
| 作者姓名： | 王攀 丁瑞军 叶振华 |
| |
| 作者单位： | 1.中国科学院上海技术物理研究所红外成像材料与器件国防科技创新实验室,上海 200083; |
| |
| 基金项目： | 国家自然科学基金(10990104) |
| |
| 摘 要： | 针对短波红外焦平面阵列探测器弱信号耦合、高帧频输出和噪声抑制的要求， 文中设计了512256面阵探测器读出电路（ROIC）的高帧频模拟信号链路结构。完整的模拟信号链包含运放积分型（CTIA）单元输入级、相关双采样、电荷放大器和互补型输出级。在低温模型基础上，进行了前仿真和提取版图寄生参数的后仿真。仿真得到输出动态范围为2.8V，8路输出的工作帧频高于250Hz。基于CSMC-6S05DPTM0.5m 工艺完成流片，读出电路ROIC芯片的测试结果与仿真结果基本一致，为短波红外焦平面探测器弱信号读出提供了有效的设计选择。
|
| 关 键 词： | 短波红外焦平面 CTIA输入级 相关双采样 电荷放大器 补型输出级 |
| 收稿时间： | 2013-09-13 |
High frequency weak signal analog chain design of short-wavelength IRFPAs |
| |
| Affiliation: | 1.Key Laboratory of Infrared Imaging Materials and Detectors,Shanghai Institute of Technical Physics,Chinese Academy of Sciences,Shanghai 200083,China;2.University of Chinese Academy of Sciences,Beijing 100049,China |
| |
| Abstract: | High-frequency analog chain of 512256 staring short wavelength (SW) infrared-focal-planearrays( IRFPAs) readout-integrated circuit(ROIC), focusing on coupling of weak signal, high-frame output and noise depression was implemented in this paper. The complete analog signal chain contained a novel input stage of capacitor feedback transimpedance amplifier (CTIA) preamplifier, a correlated double sampling (CDS) module,an amplifier of charge and complementary output stage. The simulation and verification were carried out both before and after completing the layout. The circuit's structure was analyzed according to low-temperature model. The result shows that the output dynamic range is 2.8 V and the frame rate is above 250 Hz with output of 8 channels. The CTIA ROIC chip fabricated with CSMC-6S05DPTM 0.5 m process technology is measured and proved to be consistent with the simulation. |
| |
| Keywords: | |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《红外与激光工程》浏览原始摘要信息 |
|
点击此处可从《红外与激光工程》下载全文 |
|
