Infrared array focal plane read-out circuit
A readout circuit and infrared technology, applied in the field of circuits, can solve the problems affecting the response rate of the CTIA type readout circuit, the complex design of the readout circuit, the large volume of the readout circuit, etc., so as to improve the time utilization rate and improve the pixel response. The effect of high rate and dynamic range
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[0026] The present invention will be further described in detail below in conjunction with the accompanying drawings.
[0027] Such as figure 1 As shown, the infrared column focal plane readout circuit of the present invention is composed of four circuit units: load resistance shunt circuit unit 1, integration / reset control circuit unit 2, storage circuit unit 3, and correlated double sampling CDS circuit unit 4. The load resistance shunt circuit unit 1 is composed of a pixel R1 and a reference pixel Rf, a switch M1 and a switch M2, and is used for integral current formation and output. The switch level is controlled by the DA converter voltage. It is used to solve the problem of excessive integrated current caused by the non-uniformity of the pixel and the reference pixel when the TEC module is installed, and the problem of adjusting the pixel and the reference pixel without the TEC module Bias to complete the non-uniformity correction. The integration / reset control circuit un
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