DAC Resolution Rechner
Berechnen Sie DAC output voltage, step size, and maximum output aus bit depth und reference voltage.
Step Size (LSB)
4.8828 mV
Step Size (LSB) vs DAC Bits
Formel
## DAC Resolution ### Formulas **Step Size = V_ref / 2^N** **V_out = Code x V_ref / 2^N** **V_max = (2^N - 1) x V_ref / 2^N** The DAC converts a digital number into an analog voltage. Each increment of the digital code changes the output by one LSB.
Lösungsbeispiel
10-bit DAC with 5 V reference, digital code = 512.
- 01Step size = 5 / 1024 = 4.883 mV
- 02V_out = 512 x 5 / 1024 = 2.500 V
- 03V_max = 1023 x 5 / 1024 = 4.995 V
Häufig Gestellte Fragen
Why can the DAC not reach full Vref?
The maximum code is 2^N - 1, so V_max = Vref x (2^N-1)/2^N, which is one LSB below Vref.
What is glitch energy?
A brief output spike during code transitions caused by internal switch timing. It matters in high-speed and audio applications.
R-2R vs resistor string DAC?
R-2R ladder is compact and monotonic. Resistor string (thermometer) has guaranteed monotonicity and better DNL but more components.
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