Infrared and Laser Engineering, Volume. 49, Issue 5, 20190491(2020)

Design of ultra-low-power readout circuit for 1 024×1 024 UV AlGaN focal plane arrays

Xie Jing1...2,*, Li Xiaojuan1,2, Zhang Yan1,2, and Li Xiangyang12 |Show fewer author(s)
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  • 1[in Chinese]
  • 2[in Chinese]
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    Figures & Tables(9)
    System architecture for UV AlGaN FPA readout circuit with whole chip ESD protection
    Pixel arrays and column level circuits
    Design of column buffer circuit
    Architecture of whole chip bias supply
    Die photograph of ROIC chip
    Test platform of the ROIC chip and test result
    Measurement results of 1 024×1 024 ROIC with eight outputs by acquisition card
    • Table 1. Comparision of power consumption

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      Table 1. Comparision of power consumption

      ParameterPrevious[11]This paper
      Array format128×1281 024×1 024
      Pixel current/nA4998.5
      Total power consumption/mW49.267.3
    • Table 2. ROIC of UVFPA specifications

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      Table 2. ROIC of UVFPA specifications

      ParameterMeasurement
      Array format1 024×1 024
      Pixel size18 µm×18 µm
      Operate modeSnapshot
      Pixel current/nA8.5
      Power consumption67.3 mW @2 MHz
      Frame rate15 Hz(limited by speed of acquisition card)
      Integration capacitor Charge capacity0.11 Me- at 10 fF &1.23 M e- at 110 fF
      Output swing/V1.8
      Power supply/V3.3
      Chip area19.30 mm×20.17 mm
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    Xie Jing, Li Xiaojuan, Zhang Yan, Li Xiangyang. Design of ultra-low-power readout circuit for 1 024×1 024 UV AlGaN focal plane arrays[J]. Infrared and Laser Engineering, 2020, 49(5): 20190491

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    Paper Information

    Category: 红外技术及应用

    Received: Dec. 8, 2019

    Accepted: Jan. 10, 2020

    Published Online: Sep. 22, 2020

    The Author Email: Jing Xie (xiejing@mail.sitp.ac.cn)

    DOI:10.3788/irla20190491

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