Embedded DAC output conversion calculator

Calculate ideal DAC output and LSB step with your own figures.

Your numbers

Use the units shown. Results update as you change valid inputs.

Use ideal DAC output and LSB step to compare changes to your inputs. The method and limits below explain the scope.

Examples

Examples

Try the starting example

Reference voltage (V)
3.3
DAC resolution bits
12
Unsigned DAC code
2048
Transfer convention: 0 denominator 2^bits; 1 full-scale endpoint
0
Ideal DAC output (V)
1.65
LSB step (V)
0.000806

Try another scenario

Reference voltage (V)
3.63
DAC resolution bits
12
Unsigned DAC code
2048
Transfer convention: 0 denominator 2^bits; 1 full-scale endpoint
0
Ideal DAC output (V)
1.815
LSB step (V)
0.000886
Calculation method

Calculation method

Ideal DAC output (V)

Reference × code / (2^bits or 2^bits−1) under selected convention.

LSB step (V)

Reference divided by selected denominator.

Symbols and units
a
Reference voltage (V)
b
DAC resolution bits
c
Unsigned DAC code
d
Transfer convention: 0 denominator 2^bits; 1 full-scale endpoint

Use the units shown. A list keeps the order in which you enter its values. The symbol ^ means “raised to the power of”.

Assumptions & limits

Assumptions & limits

  • Reference, resolution, code, transfer convention. Returns Ideal output voltage. All coefficients and observations are user supplied; results describe only the stated mathematical model. Quantities are deterministic calculations from supplied observations and assumptions; no external data is fetched. Supported limits: Finite inputs only; numeric fields bounded as labelled. Lists and JSON records are limited to 256 entries unless a stricter tool bound is stated. No automatic design approval, legal conclusion, treatment recommendation or safety certification. Reference voltage (V): minimum 1e-12, maximum 1000000000000.0. DAC resolution bits: minimum 1, maximum 32. Unsigned DAC code: minimum 0, maximum 4294967295. Transfer convention: 0 denominator 2^bits; 1 full-scale endpoint: minimum 0, maximum 1.
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