介绍了一种实现CMOS读出电路的随机开窗口的方法。该方法采用译码器的方式实现,与传统的移位寄存器实现读出电路随机开窗相比,该方法的优点是电路结构简单、版图占用芯片面积小、功耗低,以及操作灵活。主要介绍了采用译码器实现随机开窗的原理和电路设计,并给出了相应的仿真波形。 A method to realize the random window of CMOS readout circuit is introduced. The method is implemented by means of a decoder. Compared with the traditional method that a shift register realizes random opening of a readout circuit, the method has the advantages of simple circuit structure, small footprint, low power consumption and flexible operation. This paper mainly introduces the principle and circuit design of random windowing using decoder, and gives the corresponding simulation waveforms.