sxb416
Junior Member level 1
HELP:high pass filter
I need a active high pass filter.
It is fully differential mode filter and first order.
when I simulate the opposite phase amp,the amplitude is -r1/r2.
but if I add the cap before the resistor,it's amplitude is -40db，
why??
I need a active high pass filter.
It is fully differential mode filter and first order.
when I simulate the opposite phase amp,the amplitude is -r1/r2.
but if I add the cap before the resistor,it's amplitude is -40db，
why??