I am writing to ask the electronic circuit question based on the high frequency150khz PWM control
This is the post link that my arduino uno program discussion. website: http://arduino.cc/forum/index.php/topic,155700.0.html
As my project need to do the below tasks:  Detect the 10V-0V pwm signal in high frequency 150kHz to arduino uno  adjust the PWM duty cycle ( this is the program)  generate back 0V-10V PWM new signal to MOSFET
in the tasks RC filter circuit how to create?( As I am new in RC filter)What is the circuit? PWM signal through RC filter, change to analog signal and read by arduino.
in the task How to create back 0V to 10V PWM signal from 0V to 5V PWM output? Or what is the circuit of this? I search that it should use op-amp to step-up the PWM signal.
But the question is will there be frequency range or limit on the op-amp which the op- amp not able to generate the perfect voltage with such high frequency?( as I also new in op-amp)