The timing control circuit of 1 024×128 time-delay-integration (TDI) CMOS image sensor was designed. The synchronization of charge transfer between pixels and signal accumulation was implemented, based on along-track-rolling exposure mode and through increasing the frequency of exposure. The timing control circuits of pixel array, accumulator and column level ADC were designed and verified. I2C bus controlled variation of the related parameters. The design costs 761 standard cells, and the layout size is 125μm× 160μm. Total dynamic power consumption is 40. 55μW, and leakage power consumption is 10. 43μW. Timing is correct and meets the requirements. The combination of timing control circuit and analog circuit implements a TDI CMOS image sensor.%设计了1 024× 128时间延迟积分型(TDI) CMOS图像传感器的时序控制电路.基于沿扫描方向的行滚筒式曝光方式、通过增加曝光频率实现了像素间电荷转移的同时性和信号累加的同步性.完成了像素阵列、像素外电荷累加和列级ADC的时序控制电路,相关参数通过I2C总线控制.设计共耗费761个标准逻辑单元,版图大小为125μm×160μm,总的动态功耗40.55 μW,泄漏功耗为10.43μW,时序正确并满足要求.时序控制电路与模拟电路的结合实现了TDI型CMOS图像传感器.
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