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如图,EC_OUT是个单端信号0-5V,目前是将MUXN配到AIN4,MUXP配到AIN1,在PGA=1时测量范围是+-2.5v,ADS124S08是否有寄存器可以将某个引脚配置为VDD/2,实现0-5V的测量范围
您好,
使用内部 bias 电压应该可以,但是需要AVDD / AVSS供电电压使用单电源5V。
另外注意PGA=1时,AVDD / AVSS 使用单电源5V供电,输入范围达不到0~5V,因此你需要bypassed PGA: