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您好,ADS1282的EVM的输入端都加了肖特基二极管做保护。我看了下ADS1256的EVM输入没有。
其他引脚的接线方式,可以对比下二者的原理图,ADS1282的参考使用的是REF5050, 而ADS1256使用的是REF5025+OPA350 buffer。