This tool converts a digital value at the output of a Analog-to-Digital Converter to its equivalent input voltage value.
To use the calculator, enter
- ADC Reference voltage
- Number of Bits in the ADC (e.g. 8 bits)
- Digital Input (e.g. 10101)
Example Calculation
8-bit ADC
For a reference voltage of 5 Volt, digital word 0101010 output from a 8-bit ADC, the analog input voltage is 0.82 Volt. If the digital output is 11111111, the input is at the max value of 5 Volt.
12-bit ADC
For the same reference voltage of 5V, digital word 110101001111 from a 12-bit ADC gives an input voltage of 4.16 Volt.