TI's Filter Pro rocks

Tinkered with TI's Filter Pro software last night. I've had it
installed for a good while so I probably need to update it, but it still
seems to work fairly decently. As long as you don't put hyphens where
it wants numbers, things should be fine. ;-)

I had it design me a couple of two-pole filters, since they only take
one op-amp each. One low pass and one high pass with 600Hz cut-off
points. I chose sallen-key chebyshev filters since they looked pretty
good (and simple). Just two resistors and two caps per op-amp does it.
This gave me a chance to actually use my ancient protek signal/sweep
generator for once. I don't have the equipment or inclination to fully
verify the performance, but I can say that with ordinary 20% ceramic
caps and 5% resistors I'm happy with the results. ;-)

.

Relevant Pages

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