This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

ADS1120: ADS1120模拟电压输出范围

Part Number: ADS1120

现在用ADS1120,AVSS和DGND之间是0V,DVDD和AVDD是5V,也就是同一个电源。AIN0输入信号高电位,AIN1负输入信号低电位。

请问AIN1到AVSS之间的电压范围是多少呢

  • 您好,

    看datasheet如下截图,可以输入的模拟信号对地的幅值与PGA的设置有关:

    PGA disabled, gain = 1 to 4时,范围为AVSS – 0.1 ~ AVDD + 0.1,在您的应用中也就是-0.1V ~ 5.1V

    PGA enabled, gain = 1 to 128时,具体查看Low-Noise PGA 部分