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With a resolution of 10mV, this Dual Slope Analog to Digital Converter/Digital Volt Meter can read the same as an EC voltmeter component!
IMPORTANT: If you adjust the time scale, be careful that the counters don't glitch out.
ALSO IMPORTANT: The voltmeter only takes ONE measurement! Because I'm aiming for speed and simplicity, I didn't want to complicate things by adding reset circuitry. Perhaps I'll come back later and add one. But for now, if you want to take another measurement, you have to reset the simulation.
For a more in-depth explanation on the mechanics, check into my first Dual Slope Integrating Type digital voltmeter here. https://everycircuit.com/circuit/6675184624599040
I can use the hacked undetermined frequency clock again. Because of the two slopes method, the exact frequency doesn't contribute to the output number, as long as it's consistent through the integration process.
Specifications:
Sample rate: One shot
Theoretical range: 0.00V to 9.99V
Accuracy: 10mV
Error: ~20mV
Output Number = Vin × reset number / Vref
If input is 5.37V, then 5.37V × 1000 / 10V = 537
Blue waveform: Unknown voltage input
Green waveform: Dual slope integration signal
Orange waveform: Done signal (active high)
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