LvW
Advanced Member level 6
Re: Q factor
You can look into each book which discussses opamp properties and parameters in detail. The slew rate effect is important for each opamp application (not only for filters). The physical background is simply the fact that the output cannot follow the input voltage change if the rate of change is above a certain limit.
Added after 5 minutes:
Here is a rule of thumb which can be used for each universal-compensated opamp:
The maximum output amplitude must not exceed
V,out.max=SR/(2*Pi*Ft)
with SR=slew rate (opamp data sheet) and Ft=transit frequency.
You can look into each book which discussses opamp properties and parameters in detail. The slew rate effect is important for each opamp application (not only for filters). The physical background is simply the fact that the output cannot follow the input voltage change if the rate of change is above a certain limit.
Added after 5 minutes:
Here is a rule of thumb which can be used for each universal-compensated opamp:
The maximum output amplitude must not exceed
V,out.max=SR/(2*Pi*Ft)
with SR=slew rate (opamp data sheet) and Ft=transit frequency.
