Hello everybody
I'm here to ask you for your opinion.
in practice I have an ADC that has its own reference voltage. To this reference voltage, when the temperature reaches a certain value, a ripple of 128mVpp and a freq equal to 10khz are added. The data that the ADC converts, including the core temperature, I send them over the CAN to view. But when you add this ripple the values that are plotted are out of order.
I cannot add a HW filter to the reference output because the card has already been made.
A colleague proposed to put a FIR filter on the samples converted by the ADC, before being sent over CAN. But in my opinion this does not make sense, because I apply the filter on an analog signal which I then sample and filter and not on digital samples?
Quite right ?
Thank you
I'm here to ask you for your opinion.
in practice I have an ADC that has its own reference voltage. To this reference voltage, when the temperature reaches a certain value, a ripple of 128mVpp and a freq equal to 10khz are added. The data that the ADC converts, including the core temperature, I send them over the CAN to view. But when you add this ripple the values that are plotted are out of order.
I cannot add a HW filter to the reference output because the card has already been made.
A colleague proposed to put a FIR filter on the samples converted by the ADC, before being sent over CAN. But in my opinion this does not make sense, because I apply the filter on an analog signal which I then sample and filter and not on digital samples?
Quite right ?
Thank you