Infrared focal plane array readout circuit and adaptive power consumption regulation method thereof

CN102447845AInactive Publication Date: 2012-05-09PEKING UNIV
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
PEKING UNIV
Publication Date
2012-05-09
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

The invention discloses an infrared focal plane array readout circuit with a window readout mode and an adaptive power consumption regulation function, and an adaptive power consumption regulation method thereof. According to the invention, the adaptive power consumption regulation of the focal plane array readout circuit with the window function is realized, tail current sources of a line operational amplifier and an output operational amplifier are respectively designed into a current source array composed of k transistors, and a power-consumption control switching tube is additionally arranged on the line operational amplifier. According to the method disclosed by the invention, the operation can be normally carried out at proper power consumption under the condition of meeting of a speed requirement not matter in a large-window low frame frequency working mode or a small-window high frame frequency working mode, and the power consumption wastes generated in different working modesare effectively avoided during single power consumption design. The infrared focal plane array readout circuit and the adaptive power consumption regulation method in the invention can meet the requirements of a high-resolution portable imaging system and can be widely applied.
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Description

technical field

[0001] The invention belongs to the technical field of microelectronics and optoelectronics, and in particular relates to an infrared focal plane array readout circuit with window readout mode and adaptive power consumption adjustment and an adaptive power consumption adjustment method thereof. Background technique

[0002] Infrared thermal imaging systems are widely used in space, industry and agriculture, medicine, transportation, military and other fields. The core component of the infrared thermal imaging system is the infrared focal plane array (IRFPA: Infrared Focal Plane Array), which includes two parts: the infrared detector array and the readout circuit (ROIC: Readout Integrated Circuit): the function of the detector array is to realize the photoelectric Conversion, the function of the readout circuit is to complete the processing and readout of the pixel signal. Readout circuitry has a significant impact on the performance of infrared imaging syste...

Claims

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