ADS1298的电源分为AVDD和AVSS,这两个和GND又是不同的
OPA333电源也分为VDDA1和VSSA,和三角形的地也是不同
是不是说OPA333和ADS1298的电源都是正负电源?如果是,那么正负电源分别是多少?
有人说VSSA也可以接地,但是ECG_RA是人体过来的信号,完全有可能是负值,那么OPA333是单电源供电的话,输出BUF_RA怎么跟随输入的负电压呢?
求解释,谢谢!
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