Research on 640x512-5μm InGaAs short-wave infrared focal plane readout circuit

Abstract

In order to adapt to the third generation of infrared focal plane readout circuit design, this paper designs a 640x512-5μm InGaAs short-wave infrared focal plane readout circuit design based on 0.18μm standard technology. Based on the analysis of each module, the design focuses on the pixel unit and the readout mode of the array. Noise reduction and gain amplification are realized by pseudo correlation double sampling technology. Finally, the design of four - channel output simulation circuit. According to the simulation results, the readout rate is 10MHz, the system default working frame frequency is 54Hz, the output swing is 1.7V, and the linearity is more than 99.9%.