THE FEUTEX TOOLKIT

Transimpedance DC Error Budget

Estimate sensor-current output and offset/bias contributions.

Electronics workspace● Runs in your browser

01 Your input

Sensor currentAFeedback resistanceohmInput bias magnitudeAInput offset magnitudeV

02 Your result

View or copy raw result data

Result data

FormulaVout=−I Rf; DC error≈|Ib|Rf+|Vos|

Sources and model references

Worked example

Inputs

Sensor current: 1e-06 A
Feedback resistance: 100000 ohm
Input bias magnitude: 1e-09 A
Input offset magnitude: 1e-05 V

Expected results

Signal output: -0.1 V
Worst-sign DC error: 0.00011 V

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

{
  "i": 0.000001,
  "rf": 100000,
  "ib": 1e-9,
  "vos": 0.00001
}

Accuracy and scope

DC virtual-ground sensor input with unit noise gain; sensor impedance and stability 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.