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Original question:
急~ADS1299套件供电问题
ADS基准4.5V，输入0.2V，ADS设置PGA增益设置1、2、4、8、12，数据采集分别为0x081771，0x0b5c99，0x0c468f，0xceefb,0x14d4f5,
设置输入1V，设置增益为1、4，获取值：0x1d87fb,0x2f2378,转换后的值，除了增益为1好差不多，其他的都不是很对，这是为啥
您好，
0.2V是直流信号吗？
建议根据信号输入范围，合理定义增益。
请查看数据手册“Figure 10”和“Figure 14”。
ADS1299-x Low-Noise, 4-, 6-, 8-Channel, 24-Bit, Analog-to-Digital Converter for EEG and Biopotential Measurements datasheet (Rev. C)
