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View Full Version : Suggest a bandpass IC



metron9
02-23-2007, 04:40 AM
requirements:

27 to 4200 hz range
Adjustable frequency range something like 1/2 octive on each side of the set point.

I want to play with filtering frequencies for my stage lighting products. I have never used any bandpass or notch filter IC chips before so a little hand holding is necessary to get me on my feet.

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Think Inside the box first and if that doesn't work..
Re-arrange what's inside the box then...
Think outside the BOX!

PJ Allen
02-23-2007, 09:38 AM
http://www.national.com/ds/MF/MF10.pdf

If that's too complicated I'm sure that you'll find LM741-based circuits abound.

metron9
02-23-2007, 11:16 AM
Just checking the MF10 out , Here is a link to more information with links to app notes.

http://www.swarthmore.edu/NatSci/echeeve1/Ref/FilterBkgrnd/SwitchedCap.html

Looks like the LMF100 is in stock at digikey. So far this looks like exactly what I need. Under 5 bucks as well qty 25

Thanks PJ. Now I wont get much sleep again tonight. Another digikey order but this is cheaper than college tuition.

▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
Think Inside the box first and if that doesn't work..
Re-arrange what's inside the box then...
Think outside the BOX!