电桥的电阻值在100欧姆左右，用VDDH给电桥供电，再有磁场情况下，用万用表测量是2.0V左右，电桥中部直接输入到ADC1，ADC2，底部接SVSS，发现电桥连接之后系统无法正常通信了，是不是不能用VDDH给外部传感器供电呢，那我连接外部传感器，在不加外部电源的情况下该怎么办实现呢？
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