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Altera_Forum's avatar
Altera_Forum
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16 years ago

oscillatory circuit for LFXP6C-5TN144C

Hello,

I'm developing a FPGA programmer using LFXP6C-5TN144C as core. I'm stuck with the designing of oscillatory circuit for the same. I'm stuck with the development of 24MHz circuit at 3.3v.

kindly inform me were could i get this type of crystal oscillator. I have checked onto many sites like fox electronics, electronics-manufacturers....etc.but haven't found the correct one.

i did goggled "crystal oscillator 24MHz" but got circuits generating this frequency. but the problem is that they generate this frequency with 5v, the think i need is of 3.3v...as my FPGA supports voltage range from 2.8v-3.3v

kindly post the reply as soon as possible, so that i can fasten my work.

pls, anyone who knows a solution for this problem kindly post ur views and suggestions....

thank you

varun v g

8 Replies

  • Altera_Forum's avatar
    Altera_Forum
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    16 years ago

    A crystal oscillator is the usual solution. 24 MHz 3.3V oscillator is a standard product, available in different packages, e.g. DIL, SMD.

  • Altera_Forum's avatar
    Altera_Forum
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    16 years ago

    --- Quote Start ---

    A crystal oscillator is the usual solution. 24 MHz 3.3V oscillator is a standard product, available in different packages, e.g. DIL, SMD.

    --- Quote End ---

    hello,

    first of all thank you for your reply.

    kindly inform me were could i get this crystal oscillator. I have checked onto many sites like fox electronics, electronics-manufacturers....etc.but haven't found the correct one.

    kindly post the reply as soon as possible, so that i can fasten my work.

    thank you

    varun v g
  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    16 years ago

    such a component is as common as a resistor, capacitor, connector, screws,...

    digikey, farnell and uncounted others have them on stock.

    there are so many manufatures out there ...

    have you googled for "crystal oscillator 24MHz" ???
  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    16 years ago

    thank u for ur assistance....

    i did goggled "crystal oscillator 24MHz" but got circuits generating this frequency. but the problem is that they generate this frequency with 5v, the think i need is of 3.3v...as my FPGA supports voltage range from 2.8v-3.3v

    thanks and regards

    varun v g
  • Altera_Forum's avatar
    Altera_Forum
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    16 years ago

    You obviously didn't look hard enough. The second Digikey hit is a 3V part. Lots of 3.3V parts are also available.

  • Altera_Forum's avatar
    Altera_Forum
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    16 years ago

    Jauch VX3F is a part that runs at 3,3V ...

    realy there are at least a dozend manufature that can be second source to each other as replacement for the same footprint.
  • Altera_Forum's avatar
    Altera_Forum
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    16 years ago

    hello,

    I'm heartly delivering thanks to all of you for helping me with your knowledge. I got an apt crystal oscillator much suitable for my application (a 4 pin SMD from CTS).

    thank you all

    thanks and regards

    varun