ADC Voltage Resolution Calculator is a professional engineering tool that calculates the minimum voltage difference an Analog-to-Digital Converter (ADC) can detect between consecutive digital codes.
ADC Voltage Resolution Calculator
Calculate the minimum voltage difference between consecutive digital codes in an Analog-to-Digital Converter (ADC).
Enter values above and click "Calculate Resolution" to see results.
What is an ADC Voltage Resolution Calculator?
The ADC Voltage Resolution Calculator is a free online tool designed to calculate the smallest detectable voltage difference (resolution) between consecutive digital codes in an Analog-to-Digital Converter (ADC); it calculates the smallest voltage difference an ADC can detect (voltage per bit) and generates numeric/binary digital outputs to help you understand how analog signals convert to digital values.
How Does the ADC Voltage Resolution Calculator Work?
This calculator operates on three primary inputs:
Input Parameters:
- Reference High Voltage (VH): The maximum voltage the ADC can measure (often VREF or VCC).
- Reference Low Voltage (VL): The minimum voltage the ADC can measure (often 0V or ground).
- Number of ADC Bits: The resolution of the ADC in bits (e.g., 8-bit, 10-bit, 12-bit, 16-bit).
Calculation Formula of ADC Voltage Resolution:
The calculator uses the formula:
![\[ \text{Voltage Resolution} = \frac{\text{(VH - VL)}}{2^{\text{Number of Bits}}} \]](https://diyprojectslabs.com/wp-content/ql-cache/quicklatex.com-9199bafeba89a07ecf4587ce09dc141b_l3.png "Rendered by QuickLaTeX.com")
This determines the smallest voltage change the ADC can detect.
The calculator then:
- Determines the total voltage range (VH – VL)
- Calculates the number of discrete levels (2^bits)
- Computes the voltage resolution (voltage range ÷ discrete levels)
Output:
- Displays the resolution in Volts (V), Millivolts (mV), and Microvolts (μV) or automatically selects the best unit for readability.
- Provides a clear understanding of the ADC’s precision.
Example – ADC Voltage Resolution Calculator
Imagine you’re using a 12-bit ADC with a reference voltage range of 0V to 5V. Using the calculator:
Input:
- VH = 5V (Reference High Voltage)
- VL = 0V (Reference Low Voltage)
- ADC Bits = 12
Output: Voltage Resolution = 1.22 mV.
This means your ADC can detect voltage changes as small as 1.22 millivolts, which is crucial for high-precision applications like sensor readings or audio processing.
