PCM1803两个内部参考电压的退耦电容输出脚上电压应该多少,我的怎么第一个引脚上是2.58V,第二个引脚上是4.96V,两个应该幅值相同才对啊,而且也不应该是这样两个电压值。 现在模拟输入0V,ADC值为833B30H,输入1.28V时ADC值为8F8530H,请大侠帮助!
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