I'm trying to average 8mV 490Hz PWM signals to analog voltage. I could do it with a passive RC filter, but I want to use an active filter and gain with an okay response time.
So the PWM freq. is 490Hz.
Pulses are 0...8mV.
The PWM average will go to a MCU pin to be read so the range after gain should not exceed 5V.
I have been trying tools and filters in simulations and all failed until now.
What should be the approach to design a simple active filter topology here.
No comments:
Post a Comment