IRFPA (Infrared Focal Plane Array) and read-out circuit thereof

A technology of infrared focal plane and readout circuit, which can solve the problems of high working performance, low power consumption and low complexity of readout circuit, and achieve the effect of low power consumption
CN102095501AActive Publication Date: 2011-06-15北方广微科技有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
北方广微科技有限公司
Publication Date
2011-06-15

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Abstract

The invention discloses an IRFPA (Infrared Focal Plane Array) and a read-out circuit thereof. The read-out circuit comprises output nodes, N+1 amplifiers, N+1 primary switches and a column control signal generating logic and also comprises M+1 output buses and M+1 primary analog output buffers, wherein the N+1 amplifiers are uniformly divided into M+1 groups, one amplifier of each group of amplifiers is respectively connected to each output bus through a primary switch, the input ends of the M+1 primary analog output buffers are respectively connected to the M+1 output buses, the output ends of the M+1 primary analog output buffers are respectively connected with the output nodes through secondary switches; and the control signals of the primary switches and the secondary switches are generated by a column control signal generating module, wherein M and N are natural numbers, and N+1 is the integral multiple of M+1. An analog voltage can be accurately output to the outside of a chip at a high speed, and power consumption is lower.
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Description

Technical field

[0001] The present invention relates to the technical field of microelectronics and optoelectronics, in particular to an infrared focal plane array (infrared focal plane array) readout integrated circuit, and in particular to an infrared focal plane array with the readout circuit. Background technique

[0002] Infrared imaging technology has important applications in military, industry and agriculture, medicine, astronomy and other fields. As the core of infrared imaging technology, the infrared focal plane array includes two parts: an infrared detector array and a readout circuit. The function of the detector array is to realize photoelectric conversion, and the function of the readout circuit is to complete the processing and readout of pixel signals. Among them, the readout circuit has an important influence on the performance of the infrared imaging system.

[0003] The existing infrared focal plane array readout circuit such as figure 1 As shown, it includes ...

Claims

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