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ads1271损坏原因咨询

Other Parts Discussed in Thread: ADS1271, OPA1632

ads1271内置钳位保护电路,我的ADS1271焊上电路板后,很长时间都不会损坏,但当给输入调试的时候,连续损坏了两片,每次都是过一段时间损坏。猜想应该是输入的问题,但是测量输入电压并没有超出量程。我的输入信号是从同一个板子上的电源模块接出来的,不知道是否是这个原因。希望有大神能帮助我一下,能不能找出芯片损坏的原因,谢谢!!!