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Suggest a bandpass IC — Parallax Forums

Suggest a bandpass IC

metron9metron9 Posts: 1,100
edited 2007-02-23 04:16 in General Discussion
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!

Comments

  • PJAllenPJAllen Banned Posts: 5,065
    edited 2007-02-23 02:38
    http://www.national.com/ds/MF/MF10.pdf

    If that's too complicated I'm sure that you'll find LM741-based circuits abound.
  • metron9metron9 Posts: 1,100
    edited 2007-02-23 04:16
    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!
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