nickexists
- Sep 23, 2015
- 3
- Joined
- Sep 23, 2015
- Messages
- 3
I have an analog signal and I want to detect any change in it, whether it rises or drops. I am working between 0 and 3.3 volts. Currently I have the signal going through a simple high pass filter that rests at 1.65 volts. Let's say I want to detect when that voltage deviates by 0.1 volts.
Of course, I could create two reference voltages, one at 1.75 volts and one at 1.55 volts and then feed each of these into a comparator. But is there a more clever way that I could do this with only one comparator? I should mention that this project will be battery powered so power consumption is a factor.
Thanks!
Of course, I could create two reference voltages, one at 1.75 volts and one at 1.55 volts and then feed each of these into a comparator. But is there a more clever way that I could do this with only one comparator? I should mention that this project will be battery powered so power consumption is a factor.
Thanks!