ADC Resolution Calculator
Calculate the voltage resolution (LSB size) and dynamic range of an analog-to-digital converter.
bits
V
LSB Size
0.8057 mV
Quantization Levels4,096 levels
Dynamic Range72.2 dB
LSB Size vs ADC Bits
ADC Resolution
Formulas
LSB = V_ref / 2^N
Levels = 2^N
Dynamic Range = 20 x log10(2^N) dB
N is the number of bits. Each additional bit doubles the resolution and adds 6 dB of dynamic range.
Example Calculation
12-bit ADC with 3.3 V reference.
- 01Levels = 2^12 = 4096
- 02LSB = 3.3 / 4096 = 0.000806 V = 0.806 mV
- 03Dynamic range = 20 x log10(4096) = 72.2 dB
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.