我怎么模拟量输入0V时ADC值为833B40H,1.28V时ADC值为8FCF40H?
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你好:
音频ADC不是像逐次比较型ADC那样,音频ADC采集过后,转化的数值是I2S, I2S的数字大小和对应的电压关系,可以见如下链接的帖子:
http://www.deyisupport.com/question_answer/analog/audio/f/42/p/60506/133793.aspx#133793
这个帖子里的波形,我想应该对应的是交流信号的峰值,有正有负。如果不是以零为参考点,那么就不是负了。