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在使用opa380时，经常出现原先正常工作的电路，突然信号值直线下降，输出信号衰减十到百倍，但是变化趋势一致，不可恢复，更换opa380芯片后正常
您好，请您提供对应的电路图，输入输出波形，失效情况是否有其他动作。问题发生频率，样本和故障率分别是多少？
