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LMV344MTX/NOPB 产品一致性

Dear,

客户通过下面的电流对电流(10nA~5uA DC)信号进行放大;

200套产品中有10%的出现输出漂移;线性度也很差;

输入:100nA   异常输出:1700mV       (正常值130mV)

输入:199nA  异常输出:2000mV       (正常值498mV)

更换芯片后输出恢复正常,将问题芯片换到其他板子上问题依然存在;请帮忙给些建议,谢谢!