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ADS1274 24位精度与参考电压的关系

Other Parts Discussed in Thread: ADS1274

         请问ADS1274在使用16位时,参考电压为2.5V,1mV是否代表32767/2500=13 个数,如果参考电压不变的情况下,提高至17位数,相应的噪声也会随之增加。但是,如果提高至17位位数的同时,参考电压提高至3V,是否会好一点呢?是不是参考电压和ADC的位数有一定的关系呢?