Nrf51822 ADC Result Error

[james]

  Hi,I had developed a production which has a feature similiar to power bank. I had configured the adc with 10bit resolution, full scale, internal 1.2V reference.I found that the result of adc is 6~10 when the adc channel port connected to the ground directly. I thought the reult should be 0 in that case. The result (6~10) is error? Is there any solution which can correct that error?

[oat]

Hi Kenneth, hi James

I have the same problem, althroug I've correct offset and gain, but I got allways 4, wenn the channel port on ground directly. It is about 5% von our production, it's too much. 

Can you tell me, how i correct that.

Thank you very much.

Oat