/diy/ - Do It Yourself

>>1483532
it says it is a second order butterworth filter. the sample frequency is given as 200khz. so i created a 2nd order BW filter with the given 3dB-Frequency. the magnitude plot is about the same as the one in the datasheet. then i use the function phasedelay() to plot the phase response.

pic related is what i get. y=phase delay in seconds, x=frequency in Hz. instead of ~12µs @ 10 Hz i get ~60µs @ 10 Hz