- Sat Nov 02, 2013 8:09 am
#165154
http://en.wikipedia.org/wiki/Low-pass_f ... ealization
Note that a cap in parallel w/the feedback resistor (R5) is an active LPF w/o the need for a 2'nd op-amp.
You can do both the above to get a 2 pole LPF w/o the 2'nd op-amp.
qwertymodo wrote: Preferably, though, I'd rather just use a capacitor from Vout to ground for filtering, depending on how well it works.Perhaps you meant a resistor and cap, as a passive low pass filter.
http://en.wikipedia.org/wiki/Low-pass_f ... ealization
Note that a cap in parallel w/the feedback resistor (R5) is an active LPF w/o the need for a 2'nd op-amp.
You can do both the above to get a 2 pole LPF w/o the 2'nd op-amp.