A versatile CMOS readout integrated circuit for microbolometric infrared focal plane arrays

作者：Chen Xiqu^*; Lv Qiang

来源：Optik, 2013, 124(20): 4639-4641.

DOI：10.1016/j.ijleo.2013.01.113

• Readout integrated circuit
• Infrared focal plane array
• Microbolometer
• CMOS

In this paper, a versatile complementary metal oxide semiconductor (CMOS) readout integrated circuit (ROIC) for microbolometric infrared focal plane array (IRFPA) is presented. By applying a variable column-shared current mirror (CM) proportional circuit, the ROIC can be used in applications on different occasions from very high background to quite low background. With column-shared blind bolometer, CM proportional circuit and capacitor feedback trans-impedance amplifier (CTIA) integration circuit, the ROIC has high performance such as high gain, low noise, low power dissipation and large output dynamic range while maintaining simple structure. Moreover, a common high correlated double sampling (CDS) circuit is utilized to improve noise performance of the ROIC under low power dissipation. An experimentally prototypical readout chip is designed and fabricated for microbolometric IRFPAs to verify the performance of the ROIC. Theoretical analysis and experimentally measuring results indicate that the proposed CMOS ROIC can be applied to microbolometric IRFPAs.

• 出版日期2013
• 单位武汉轻工大学