Analog Signal Scaling
Taming an unruly analog signal into a more manageable size.
Timespan: December 2020
Published: 2020-12-12
Mapping analog voltages between two rails
This webpage is the live calculator I made for the analog scaling problem I highlighted in this blog post. It solves the problem of moving an analog signal within one voltage range to another voltage range with one op-amp.
Here, an example is set up scaling ±15V sensor output to 0-5V Arduino/microcontroller analogRead-able values.
Circuit setup
Solution
| Vref: | V |
| R2/R1 ratio: |
Practical Implementation:
To find real-world resistors that create this reference voltage or match this resistor ratio, you can visit this other calculator, which I find invaluable.
Happy scaling!