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ADS1211的外部基准电压是2.5V , 当在输入端输入满量程2.5V 电压的时候，输出数据是0x500000, 当输入3.3V的时候，输出是0x6ffff, 好奇怪的， 什么满量程的输出不是0x7fffff呢？
请问你是差分输入吗？
为了得到转换器的满可度输入，输入信号必须保证完全差分: (Ainn=2*Refin-AINP)
你好，全差分输入为什么有AINN = 2 • REFIN – AINP呢?
