Description
Return 4^additionalBits samples and shiftBits equal to additionalBits for an integer gain request from zero through 20.
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.
Return 4^additionalBits samples and shiftBits equal to additionalBits for an integer gain request from zero through 20.
When to use this tool
Use ADC Oversampling Bit Gain Budget when you need one explicit converter coding, resolution, or analog-model term.
How to use the tool and how it works
- Enter additionalBits. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read samples, shiftBits. Use the output convention below.
Return 4^additionalBits samples and shiftBits equal to additionalBits for an integer gain request from zero through 20.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| additionalBits | Additional Bits | Required. Safe integer; minimum 0; maximum 20. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| samples | Samples | Required. Safe integer. |
| shiftBits | Shift Bits | Required. Safe integer. |
{
"input": {
"additionalBits": 2
},
"output": {
"samples": 16,
"shiftBits": 2
}
}Limitations and assumptions
- This is an oversampling budget, not a guaranteed resolution gain; sufficient noise, bandwidth, and accumulator width require separate analysis.
- 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
- Microcontroller: Fixed Point Accumulator Guard Bit Count
Return zero guardBits for one summand, otherwise ceil(log2(summandCount)).
- ADC Reference Lsb Ratio
Return (firstReference / secondReference) × 2^(secondBits - firstBits) as lsbRatio.