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OPA228有OPA228P和OPA228PA两种型号，价格差了一倍，请问有什么区别这两种型号。
您好，
OPA228P和OPA228PA的差异主要在输入失调电压VOS 和失调电压的温漂，如下 SPEC截图，OPA228P的输入失调电压小一些，温漂也小一些，可以应用在对精度要求更高的场合。
