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.
因为我ADC采集是正电压,所以我选择单极性输出。比如我选择了channel 0,模拟输入口选择A3差分对。我实际的电路图A3+连接至了模拟信号,但A3-我悬空,实际测试发现A3-悬空和接地,ADC采集转换得到的值是一样的,不知道怎么解释,A3-需要接地吗?
望TI大神能给予下点拨,谢谢
楼主你好!
需要接地。或者固定电平。
悬空有可能受到干扰
单端信号输入A3差分输入通道的A3+,配置SD16AE=SD16AE7,A3-在内部已经连接到地了