DAC Resolution Calculator
Calculate the voltage resolution, step size, and output range of a digital-to-analog converter.
V
Value to convert (0 to 2^N - 1)
Output Voltage
2.5000 V
Step Size (1 LSB)4.883 mV
Total Output Levels1,024
Maximum Output4.9951 V
Output Voltage vs DAC Resolution (bits)
DAC Resolution and Output
A DAC converts a digital code to a proportional analog voltage. The resolution determines the smallest voltage step.
Formulas
Step Size = V_ref / 2^N
V_out = Digital Code x Step Size
Max Output = (2^N - 1) x Step Size
The output is always one step size less than V_ref because the code range is 0 to 2^N - 1.
Example Calculation
10-bit DAC with 5.0 V reference, digital code 512.
- 01Step size: 5.0 / 1024 = 4.883 mV
- 02Output: 512 x 0.004883 = 2.5000 V
- 03Max output: 1023 x 0.004883 = 4.9951 V
- 04Total levels: 1024
Frequently Asked Questions
Learn More
Ohm's Law Guide
A complete guide to Ohm's Law. Learn the relationship between voltage, current, and resistance, with practical examples, the power triangle, and circuit analysis tips.