FieldengInstrumentation & Controls
ADC Counts to Voltage
Unipolar ADC: V = counts × Vref / (2^N − 1). Endpoints are 0 and full-scale.
Instrumentation & ControlsElectrical & Power
Unipolar ADC: V = counts × Vref / (2^N − 1). Endpoints are 0 and full-scale.
App id: INST-12. Reference version 1.0.
How to fill it
Fill the inputs. The tool shows the outputs.
On the tool screen, Calc is the working sheet. Presets stores values you reuse. Reference is the formula, assumptions, and provenance below.
Formula
V = counts × Vref / (2^N − 1)Inputs
| Name | Unit |
|---|---|
| ADC counts | 1 |
| Resolution (bits) | 1 |
| Reference voltage | V |
Outputs
| Name | Unit |
|---|---|
| Voltage (hero result) | V |
| Percent full scale | % |
Diagnose
Observations are context. They do not pass or fail a structure. See Diagnose.
| When | Observation | Severity |
|---|---|---|
ADC counts > max | Count above full scale | caution |
ADC counts < 0 | Negative count | caution |
Assumptions
- N is a positive integer. Mid-scale 2048/4095 × 3.3 V is not exactly Vref/2.
Provenance
- Straight-line unipolar coding with both endpoints. Not two’s-complement bipolar.