This is my principle diagram, the reference voltage 5 v, sampling voltage 5 v, is now the benchmark voltage fluctuation in the plus or minus 30 mv, sampling accuracy can not accept,

CodePudding user response:

Schematic diagram not upload

CodePudding user response:

reference 1st floor Lenged_Zhao response:

principle diagram not upload

Part have screenshots, behind is even single-chip ADC

CodePudding user response:

The software also can consider on average

CodePudding user response:

reference 3/f fly 100% response:

average also consider software

How to average. I don't understand, give advice or comments please

CodePudding user response:

If the dc signal, the average is possible, such as the average sliding window,
If it is a periodic signal, then need to filter, actual and filter above, such as FIR filter,
Or to switch to precision reference voltage source,

CodePudding user response:

Volatility: hi, I said is refers to a single power supply chip output is 4.980, the same the other power supply chip output is likely to be 5.020. How to solve this kind of circumstance,

CodePudding user response:

30 mv error, less than 1%, general reference voltage chip is the precision, either in high precision reference voltage chip

CodePudding user response:

refer to 7th floor poetryTang response:

30 mv error of less than 1%, general reference voltage chip is the precision, either in high precision reference voltage chip

Have a way of calibration software there

CodePudding user response:

Can't, if software can calibration, and why, reference voltage must be considered in the software, only one measurement, written into the software,

CodePudding user response:

references 9 f poetryTang response:

can't, if software can be calibrated, and why, reference voltage must be considered in the software, only one measurement, written into the software,

Ok, thanks.

CodePudding user response:

reference rookie daily life of the 4th floor response:

Quote: refer to the third floor fly 100% response:

average also consider software

How to average. I don't understand, give advice or comments please

You can collect ten times to remove one of the largest number average, minimum and the remaining eight