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ADC Input Divider Headroom

Online adc input divider headroom. Ideal divider; protection, settling and ADC loading excluded.

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  1. 01

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adc input divider headroom calculator online

Use adc input divider headroom online for top ohm, bottom ohm, reference V. Ideal divider; protection, settling and ADC loading excluded. Ideal nominal component model. Verify topology, operating range, tolerances and ratings against the actual component datasheet.

How to use it

Enter top ohm. Set bottom ohm, reference V. Select Calculate and check the labeled output. Copy or download the JSON result.

Options and example settings

OptionChoices / valueExample default
top ohmMain input. Positive values. 10000
bottom ohmOption. Positive values. 2000
reference VOption. Positive values. 3.3

Calculation method

maximum_source_V = reference_V*(top_ohm+bottom_ohm)/bottom_ohm (^ means exponentiation; trig functions ending in d use degrees).

Worked examples

Apply adc input divider headroom to the case below, keeping the displayed units and assumptions. Ideal divider; protection, settling and ADC loading excluded.

ADC Input Divider Headroom — worked case

Settings: bottom ohm: 2000; reference V: 3.3

Input:

10000

Calculated result for these inputs:

Output:

{
  "maximum_source_V": 19.8
}

Choose the right tool

Match the topology before entering values: series and parallel networks, inverting and noninverting stages, and buck and boost converters use different equations. Component ratings, parasitics, protection and measured conditions require separate review.

Limitations and common mistakes

  • Ideal divider; protection, settling and ADC loading excluded. Ideal nominal component model. Verify topology, operating range, tolerances and ratings against the actual component datasheet.
  • Use the displayed unit in every field. Ratios and percentages are different inputs; percent fields use values such as 25 rather than 0.25.

Frequently asked questions

How can I use adc input divider headroom calculator online?

Enter top ohm. Set bottom ohm, reference V. Select Calculate and check the labeled output. Copy or download the JSON result.

Technical references

Where is my input processed?

The bundled tool processes input in your browser. It does not upload tool input to a conversion service. Other site plugins, analytics, advertising and browser extensions may have separate behavior.

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