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您好,对比下Figure1的时序 ,看起来好像没问题,第一个S2的低脉冲信号是复位信号10us(我看时间轴每个格子代表5us),S2的上升沿即当 S2打开时开始积分,输入电流开始充电Cint,积分结束是在S2的下一次复位。
S2的第一个复位期间,输出电压上升的一段电压即蓝色部分,是运放自身的Vos叠加了Iin*Rs2的原因。