An infrared focal plane array and its readout circuit enabling control circuit

Abstract

The embodiment of the invention discloses an enabling control circuit of a reading circuit of an infrared focal plane array. The enabling control circuit comprises an and gate, an external control circuit, a simulation power-on and power consumption detection circuit, and a digital power-on detection circuit. The external control circuit, the simulation power-on and power consumption detection circuit and the digital power-on detection circuit are connected to three input ends of the and gate respectively, and the output end of the and gate outputs an enabling control signal. According to the enabling control circuit, the enabling control signal is jointly controlled through an external control signal, a digital power-on detection signal and a simulation power-on and power consumption detection signal, the simulation power-on and power consumption detection signal is added to an enabling control module, thus whether a simulation module is powered on or not can be detected, the situation of overhigh power consumption can be prevented on the whole, and power consumption is effectively controlled.

Description

technical field [0001] The invention relates to the technical field of infrared focal plane arrays, in particular to an enabling control circuit of an infrared focal plane array readout circuit and an infrared focal plane array thereof. Background technique [0002] The function of the infrared focal plane readout circuit is to extract the resistance change of the thermally sensitive material of the detector, convert it into an electrical signal, and perform preprocessing (such as integration, amplification, filtering, and sample / hold, etc.) and parallel / serial conversion of the signal. With the continuous maturity, improvement and development of CMOS technology, CMOS readout circuit has become the main development direction of today's readout circuit because of its many advantages. [0003] In recent years, with the wide application of mobile devices and battery-powered devices, the power consumption of integrated circuits has also been mentioned as important as the area an...

AI Technical Summary

Problems solved by technology

For static power consumption, in the existing CMOS technology, the static power consumption is mainly generated by leakage current. Due to the complementary symmetry of the CMOS circuit structure, only one transistor is turned on at the same time, and the leakage current is very small, which is not the system power consumption. main part of

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