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Alternatives to LMF60CIN filter ICs

Discussion in 'Electronic Design' started by emiller, Dec 6, 2007.

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  1. emiller

    emiller Guest

    I've been asked by a client to supply exact copies of some low pass
    filters that he had manufactured in 1998. The boards use LMF60CIN 6th
    order switched butterworth low-pass filters which are now dis-
    continued. I've explained this to him but he is adamant that we supply
    him a replica of what he has so that it is retro-compatible.

    Is there a direct replacement for this chip available or will I have
    to check the obsolete part suppliers?
  2. Ecnerwal

    Ecnerwal Guest

    I've got 2 - how many do you need?

    My take on these going away is that you are expected to use the LMF100,
    configured to do what you want, rather than have the dedicated function
    LMF60 and LMF90 - but if you need "exact copies", it's off to the old
    part suppliers, unless you only need two, in which case I can be your
    old part supplier, if I can figure out what I should charge your client
    for them. Presumably more than an LMF 100 goes for these days, since
    they are unobtanium.
  3. Jim Thompson

    Jim Thompson Guest

    might have an equivalent.

    ...Jim Thompson
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