THE FEUTEX TOOLKIT

ADC Acquisition Settling Budget

Estimate RC acquisition time needed to settle a full-scale step to half a code.

Signal Processing workspace● Runs in your browser

01 Your input

Total source and switch resistanceohmSampling capacitanceFResolutionbitsAvailable acquisition times

02 Your result

View or copy raw result data

Result data

Formulatacq≥RC ln(2ᴺ⁺¹)

Sources and model references

https://www.analog.com/media/en/training-seminars/tutorials/MT-046.pdf

Worked example

Inputs

Total source and switch resistance: 1000 ohm
Sampling capacitance: 1e-11 F
Resolution: 12 bits
Available acquisition time: 1e-07 s

Expected results

Required time: 9.010913347e-08 s
Available minus required: 9.890866527e-09 s

Load the example in the workspace to reproduce these results. Display rounding does not change the underlying calculation.

How to use this tool

Enter the labeled inputs in the indicated units.
Calculate and compare every output against the stated model assumptions.

Try this example

{
  "r": 1000,
  "c": 1e-11,
  "n": 12,
  "available": 1e-7
}

Accuracy and scope

Single exponential settling after full-scale step; amplifier nonlinear settling and kickback excluded. Simplified analytical model; not a design recommendation or safety certification.

Is my data uploaded?

This tool runs locally in your browser. Input and output are not sent to a processing server. Copy or download your result before leaving the page.