Hi all,
On page 23 of the datasheet they have a 24.4 ohm resistor in series with a 30mH inductor all in parellel with a 47 pF cap. they say this is a second order lpf with 100 MHz cutoff. This will do me nicely but I would like to understand what the inductor does? why it is a 2nd order filter and how can the cut off frequency be calculated?
I understood that the cut -off freq was 1/2*pi*R*C but i am not sure how it is done in this case.
Many thanks for any help.