Infrared array focal plane read-out circuit
A readout circuit and infrared technology, applied in the field of circuits, can solve problems affecting the response rate of CTIA-type readout circuits, complex readout circuit design, and large volume of readout circuits, so as to improve time utilization and pixel response The effect of large rate and dynamic range
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[0026] The present invention will be described in further detail below in conjunction with the accompanying drawings.
[0027] Such as figure 1As shown, the infrared column focal plane readout circuit of the present invention is composed of 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, a reference pixel Rf, a switch M1 and a switch M2, and is used for forming and outputting an integral current. The switching level is controlled by the voltage of the DA converter, which is used to solve the problem of excessive integration current due to the non-uniformity of the pixel and reference pixel when there is a TEC module, and by adjusting the pixel and reference pixel when there is no TEC module Bias to complete non-uniformity correction. The integral / reset control circuit unit 2 is composed of an operational...
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