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How to verify the ADC value is currect or not?(ADPD105/108)

as title ,
Just like g-sensor will define a tolerance to verify the chip.
if I set LED1 current is 30 mA,
How to verify the ADC value I get is correct ?(in darkroom or other situation)

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  • Hello,

    The resolution of the ADC, in nA/LSB, is specified in the spec table. If you can drive a known current source into the input of the device then you can verify that the ADC has the correct output. If you are unsure of what your input current is then you wouldn't be able to verify this. There is no reason to believe that the output of the ADC would be incorrect. Each of the devices is fully tested at ADI. 

    Regards,

    Kevin

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  • Hello,

    The resolution of the ADC, in nA/LSB, is specified in the spec table. If you can drive a known current source into the input of the device then you can verify that the ADC has the correct output. If you are unsure of what your input current is then you wouldn't be able to verify this. There is no reason to believe that the output of the ADC would be incorrect. Each of the devices is fully tested at ADI. 

    Regards,

    Kevin

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