Jim Bryant from ADI has a few tips in the June 22nd issue of EDN, it's kind of a plug for ADI, but quick and useful:
1) Use high speed, rather than high precision opamps -- high precision opamps run out of gain too quickly.
2) Don't try to save money by using large resistors in the network -- the offset voltage and noise cause performance to deteriorate.
3) Current feedback amps like to oscillate when used in audio filters.
the article can be found here:
http://www.analog.com/analog_root/static/raq/raq_activeFilters.html
1) Use high speed, rather than high precision opamps -- high precision opamps run out of gain too quickly.
2) Don't try to save money by using large resistors in the network -- the offset voltage and noise cause performance to deteriorate.
3) Current feedback amps like to oscillate when used in audio filters.
the article can be found here:
http://www.analog.com/analog_root/static/raq/raq_activeFilters.html