Record number :
100008
Title of article :
A current mirroring integration based readout circuit for high performance infrared FPA applications
Author/Authors :
T.، Akin, نويسنده , , H.، Kulah, نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2003
Pages :
-180
From page :
181
To page :
0
Abstract :
Reports a current mirroring integration (CMI) CMOS readout circuit for high-resolution infrared focal plane array (FPA) applications. The circuit uses a feedback structure with current mirrors to provide stable bias voltage across the photodetector diode, while mirroring the diode current to an integration capacitor. The integration capacitor can be placed outside of the unit pixel, reducing the pixel area and allowing one to integrate the current on larger capacitance for larger charge storage capacity and dynamic range. The CMI unit cell allows almost rail-to-rail voltage swing on the integration capacitance for low voltage operation. The detector bias voltage can be adjusted independently for various detector requirements. By virtue of current feedback in the CMI structure, very low (ideally zero) input impedance is achieved. The unit-cell contains just nine MOS transistors and occupies 20 (mu)m * 25 (mu)m area in a 0.8-(mu)m CMOS process. The CMI circuit provides a maximum charge storage capacity of 5.25 * 10^7 electrons and a maximum transimpedance of 6 * 10^7 (omega) for a 5 V power supply and 2 pF off-pixel integration capacitance.
Keywords :
heat transfer , natural convection , Analytical and numerical techniques
Journal title :
IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II:ANALOG AND DIGITAL SIGNAL PROCESSING
Journal title :
IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II:ANALOG AND DIGITAL SIGNAL PROCESSING
Serial Year :
2003
Link To Document :
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