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大家好 我想知道一个问题
就是adc差分输入 这个差分输入时能分辨多大的电压 1mv 或1v
急求 谢谢
看你采用什么分辨率
// AD参考电压配置#define ADC_SREF_VREF (0x00)#define ADC_SREF_AIN7 (0x01)#define ADC_SREF_AVDD (0x02)#define ADC_SREF_AIN6_AIN7 (0x03)
// AD转换精度#define ADC_CONVERT_7BIT (0x00)#define ADC_CONVERT_9BIT (0x10)#define ADC_CONVERT_10BIT (0x20)#define ADC_CONVERT_12BIT (0x30)
// AD转换通道#define ADC_CONVERT_CH0 (0x00)#define ADC_CONVERT_CH1 (0x01)#define ADC_CONVERT_CH2 (0x02)#define ADC_CONVERT_CH3 (0x03)#define ADC_CONVERT_CH4 (0x04)#define ADC_CONVERT_CH5 (0x05)#define ADC_CONVERT_CH6 (0x06)#define ADC_CONVERT_CH7 (0x07)// AD转换差分输入信号#define ADC_CONVERT_CH0_CH1 (0x08)#define ADC_CONVERT_CH2_CH3 (0x09)#define ADC_CONVERT_CH4_CH5 (0x0A)#define ADC_CONVERT_CH6_CH7 (0x0B)// AD转换其它信号#define ADC_CONVERT_GND (0x0C)#define ADC_CONVERT_VREF (0x0D)#define ADC_CONVERT_TEMP (0x0E)#define ADC_CONVERT_VDD_3 (0x0F)
恩 谢谢你
这个差分输入精度我可以理解为 比如说3.3v的电压 我选12位 那就是3.3v/2048 这样对吗？
