请推荐双极性模拟输入的AD芯片。位数能有多高就多高,采样率》20Khz。谢谢各位。急求
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先谢谢Carter.那请问ADS1256是不是只能测单极性模拟输入(模拟输入只能是正电压信号)?
那再请问ADS1258也是可以单通道模拟输入 负电压信号 吗?谢谢
配置为单端输入,输入负电压是可以的,但是需要使用双电源供电(typically AVDD = +2.5V,AVSS = –2.5V)。可以参考其数据手册Figure 67. Multichannel, ±10V Single-Ended Input, Bipolar Supply Operation