An analogue active filter which can be configured for a wide range of low-pass, high-pass and band-pass filters
Two 1000 pF on-chip capacitors trimmed to 0.5 %
This solves one of the most difficult problems of active filter design, which is to obtain low-loss capacitors with tolerance
Apart from filter types such as Butterworth, Bessel and Chebyshev can a fourth, uncommitted operational amplifier be used to form special filters such as band-reject and inverse Chebyshev
Thanks to the analogue design, the device is free from the switching noise that can be disturbing in switching filters
Datasheet
