I'm just looking at this application note...
http://www.maxim-ic.com/app-notes/index.mvp/id/4622
...on the receiver side they have a '2nd order bandpass filter centred at 10khz' (10khz being the carrier frequency they used)....I'd like to use the same circuit but would need the carrier frequency to be a bit higher at 15.625Khz ....how can a decide on the capacitor/resistor values for the bandpass filtered to be centred at 15.625khz?
I tried to find the formula...but then I spontaneously combusted.
Many thanks,
pesky.
http://www.maxim-ic.com/app-notes/index.mvp/id/4622
...on the receiver side they have a '2nd order bandpass filter centred at 10khz' (10khz being the carrier frequency they used)....I'd like to use the same circuit but would need the carrier frequency to be a bit higher at 15.625Khz ....how can a decide on the capacitor/resistor values for the bandpass filtered to be centred at 15.625khz?
I tried to find the formula...but then I spontaneously combusted.
Many thanks,
pesky.