Description
Subtract 2^(bits - 1) from offsetBinaryCode for signedCode, with code bounded by the selected 1-24-bit width.
Ideal ADC and DAC models connect digital codes to a reference span and quantization step. Coding, endpoint conventions, and reference behavior determine the meaning of a code-domain term.
Subtract 2^(bits - 1) from offsetBinaryCode for signedCode, with code bounded by the selected 1-24-bit width.
When to use this tool
Use Microcontroller: ADC Differential Midcode Offset when you need one explicit converter coding, resolution, or analog-model term.
How to use the tool and how it works
- Enter offsetBinaryCode, bits. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read result. Expand result to inspect the returned fields.
Subtract 2^(bits - 1) from offsetBinaryCode for signedCode, with code bounded by the selected 1-24-bit width.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| offsetBinaryCode | Offset Binary Code | Required. Safe integer. |
| bits | Bits | Required. Safe integer. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| result | Result | Required. Object. |
| result.signedCode | Signed Code | Calculated result member: number. |
{
"input": {
"offsetBinaryCode": 128,
"bits": 8
},
"output": {
"result": {
"signedCode": 0
}
}
}Limitations and assumptions
- This is a coding crosswalk only, not an analog voltage calibration or two's-complement bit-string formatter.
- Outputs are nested inside result. Inputs must satisfy both the field types and the cross-field conditions above. Invalid input causes an error; a successful false flag or documented placeholder is a different result.
- Numeric calculations use binary floating point unless exact decimal-integer arithmetic is explicitly stated. No hidden measurement tolerance or decimal rounding is added; nonfinite or out-of-contract results are rejected. Numeric signed-zero results are exported as zero.
Alternative or Complementary methods
Compare the ideal term with device transfer curves, noise, calibration, and acquisition requirements.
References
Similar or alternative tools
- ADC Signed Differential Full Scale Gap
For signed code limits -2^(bits - 1) through 2^(bits - 1) - 1, return distances from the lower and upper limits as negativeHeadroom and positiveHeadroom.
- Microcontroller: ADC Code Bin Midpoint
Use referenceVoltage / 2^bits for unipolar bin width or twice that value for twos-complement-bipolar.