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ADS1299 Test Signal电压幅值问题

使用ADS1299EEG FE Rev A得到Test Signal电压幅值在0.0018到-0.0018左右,但自己做的板子使用和ADS1299EEG FE Rev A相同配置,得到频率对的,电压幅值在0.024v左右,电压计算公式:

if(ulCount < 0x800000)
{
printf("\r\n%4.4f",(float)ulCount*2.42/8388607);
}
else
{
printf("\r\n-%4.4f",(float)(0xFFFFFF-ulCount)*2.42/8388607);
}

寄存器配置:

Config1-3:0x96,0xD0,0xE0

Channel1:0x65;