准备自己用AFE4400搭建血氧计,请问用AFE4400需要注意一些什么呢?
我自己之前做了一个,但是接通电源后,AFE4400不工作,晶振不起振,BG端电压为0,TX_REF端电压为电源电压。。
TX 和RX部分都使用的3.3V电源
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