Infrared CMOS detector arrays are key to scientific imaging, including Earth remote sensing, astronomy, and planetary exploration. Even as more digital functions are incorporated into CMOS readout integrated circuits-first, with digital-to-analog bias generation and later, with analog-to-digital conversion of the pixel readout-external electronics are still needed to supply these devices with low-noise power and provide suitable data interfaces. This paper describes two implemented designs for such electronics, one for an analog-output detector array, and one for a digital-output array. Both subsystems are intended for planetary infrared imaging spectrometers and output data with similar frame sizes, rates, and bit depth. They include DC-DC conversion from bus power, connection to the detector array through a rigid-flexible printed circuit, data buffering and output through SpaceWire, and commanding over a UART. Due to their similarities in scope and capability, it is meaningful to compare the resources needed by each subsystem. We find that digital-output detectors minimize subsystem mass and volume, but analog-output detectors minimize subsystem power and heat rejection needs. Other trade-offs are also discussed.


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    Titel :

    A Comparison of Imaging Subsystems for Analog- versus Digital-Output Detector Arrays


    Beteiligte:
    Sullivan, Peter (Autor:in) / Foster, Eric (Autor:in) / Green, Robert O. (Autor:in) / McKinley, Ian (Autor:in) / Nadgauda, Shriya (Autor:in) / Shah, Niyati (Autor:in) / Torousian, Sasoun (Autor:in) / Cardone, John (Autor:in) / Hellings, John (Autor:in)


    Erscheinungsdatum :

    04.03.2023


    Format / Umfang :

    9196060 byte




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch




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