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ADS1298ECG-FE 实验板电路问题



TI专家,您好!

我们在ADS1298ECG-FE原理图上看见很多NI的符号, 到底是什么意思呢? 具体的值是多少呢? 如下面两个图所示:

R1, R2电阻的值是多少? 这个比较重要。

R59 - R66又是多少?

麻烦你们回答一下。

谢谢