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Dear All,
1、目前发现OPA227出现零飘问题，现象为输出信号零点跑动很大，以电流输出口为例，正常情况下在5分钟内零点跑动在2～3mA之内，而换上带有OPA227的滤波板，2分钟内就会跑动20～30mA，电压零点在5分钟内从120mV降至30mV；
2、烦请帮忙解释一下芯片丝印为8AAH12代表什么意思？
Thanks！
