signal generator ic

Discussion in 'General Electronics Chat' started by pratapkollu, Mar 30, 2012.

  1. pratapkollu

    Thread Starter Active Member

    Dec 13, 2006
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    hai

    I need a sine wave generator ic for generating 300 kHz to 500 kHz
    i tired to get MAX038 but unable to find it Ireland

    can any one suggest any alternative ic?
    or any international supplier for max038

    thanks and regards
    pratap

    note: please dont ask me to google it, i am doing it since 3 days and posting here
     
  2. MrChips

    Moderator

    Oct 2, 2009
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    Try XR2206
     
  3. t06afre

    AAC Fanatic!

    May 11, 2009
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    They stopped making the MAX038 around 2007/2008 I think. You can get it from EBAY. But it is not a cheap IC
     
  4. pratapkollu

    Thread Starter Active Member

    Dec 13, 2006
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    dude

    I cant buy on ebay, because I am from University
    they should be bought through purchase order
    anyway thanks for the reply
     
  5. pratapkollu

    Thread Starter Active Member

    Dec 13, 2006
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    even its not available in Ireland
    thanks for th reply
     
  6. t06afre

    AAC Fanatic!

    May 11, 2009
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    But does not the major component re-sellers. Sell all over Europa?
     
  7. pratapkollu

    Thread Starter Active Member

    Dec 13, 2006
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    i tried with farnell,digikey,mouser and radionics with no luck
     
  8. Ron H

    AAC Fanatic!

    Apr 14, 2005
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    Regarding XR2206:
    I know nothing about buying parts in Ireland, but what about Donberg Electronics? They didn't say if they were available.
     
  9. bountyhunter

    Well-Known Member

    Sep 7, 2009
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    Doesn't do well above about 200 kHz.
     
  10. studiot

    AAC Fanatic!

    Nov 9, 2007
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    I can't imagine any respectable university project demanding a particular component that hasn't been generally available for many years.

    You should look at this from a different viewpoint.

    What are you trying to achieve?

    In other words what are your design objectives?

    There are many ways to create a signal generator. You haven't even stated what wave shape (s?) you need.

    You will get plenty of useful help with a project here, but only in proportion to what detail you are prepared to put in.


    The XR2206
    I endorse this.

    However if you must have one this London supplier will post to Ireland.

    http://www.cricklewoodelectronics.com/Cricklewood/search.php?mode=search&page=1
     
    Last edited: Mar 30, 2012
  11. Audioguru

    New Member

    Dec 20, 2007
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    Maxim claims that its foundry that makes the MAX038 was destroyed in a hurricane (called a cyclone or monsoon over there). I suspect that maybe they were not selling enough of them to change their production to a surviving foundry.
     
  12. pratapkollu

    Thread Starter Active Member

    Dec 13, 2006
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    Hai

    thanks for the reply
    I am trying to provide excitation to my magnetic sensor
    hence I need 300/400 kHz sine wave, 50% symmetric, 10V pk-pk
    I am unaware of DDS, how to use it etc..
     
  13. panic mode

    Senior Member

    Oct 10, 2011
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  14. studiot

    AAC Fanatic!

    Nov 9, 2007
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    Magnetic devices are usually current drive, not voltage drive.

    However your details are a start towards a design.

    You will almost certainly need some kind of buffer between the oscillator and the magnetic device.

    Have you considered this?

    What (generally) is your project about? That is, should you be designing the oscillator or can you use the work of others?
     
  15. Blofeld

    Active Member

    Feb 21, 2010
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    This sounds interesting, but it would depend on how fast the oscillator has to move between 300kHz and 500kHz. As far as I remember, what the Wien bridge does best is to sit on one frequency (or move very slowly between frequencies) and produce a sine wave with low distortion. Not so good for quick changes of frequency.

    Anyway, if it doesn't have to be an IC, maybe this note may suggest some ideas:

    AN263 Sine Wave Generation Techniques from Texas Instruments, 1999

    http://www.ti.com/general/docs/lit/getliterature.tsp?literatureNumber=snoa665b&fileType=pdf
     
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