数字红外焦平面探测器（特邀）

相比传统的模拟红外焦平面探测器，数字红外焦平面探测器具有很多技术优势，是红外焦平面探测器技术的重要发展方向。首先，介绍了数字红外焦平面探测器国内外的研发现状，从信号处理以及应用的角度分析了模拟红外焦平面探测器与数字红外焦平面探测器的区别与特点；然后，又详细介绍了列级ADC数字读出集成电路以及数字像元读出集成电路的架构及具体电路模块，分析了数字读出集成电路的各模块电路及与性能的关系，并展望了数字读出集成电路的技术发展趋势。随着红外焦平面探测器向大面阵、小像元及高性能发展，对数字读出集成电路也提出更高的技术要求。通过读出集成电路架构以及模块电路的技术提升，列级ADC数字读出集成电路将普遍应用于大面阵、小像元红外焦平面探测器，而数字像元读出集成电路将普遍应用于长波红外焦平面探测器。

Digital infrared focal plane array detectors (Invited)

Compared with the traditional analog infrared focal plane array (IRFPA), the digital IRFPA has many technical advantages, and is the development direction of the IRFPA technology. The research and development status of the digital IRFPA was introduced. Firstly, the differences and features of analog and digital IRFPA were analyzed. Then, the detailed circuit blocks of column-level ADC and digital pixel digital readout integrated circuit (DROIC) were described, and the links between circuit blocks and performances of DROIC were analyzed. Finally, the technical trends of different DROICs were predicted. The developmednt of IRFPA towards a larger array format, a smaller pitch and better performance, demands higher DROIC performance. With DROIC architecture and module circuit advancement, the column-level ADC DROIC will be widely used in large-format and small-pixel IRFPAs, and the digital pixel ROIC will be widely used in long-wavelength IRFPAs.