about progmmable oscillator

Discussion in 'Digital Circuit Design' started by Marwa Tayahi, Jul 9, 2018.

  1. Marwa Tayahi

    Thread Starter New Member

    Apr 16, 2018
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    someone explain to me why they use the programmable oscillator and how used that what's her advantages !
     
  2. bertus

    Administrator

    Apr 5, 2008
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    Hello,

    For wich frequency range will the oscillator be used?
    A programmable oscillator will need control hardware to set the frequency.

    Bertus
     
  3. Alec_t

    AAC Fanatic!

    Sep 17, 2013
    8,854
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    Most oscillators consume more power the faster they run, so choosing a low frequency, where appropriate, can be used to conserve power. This is a particular concern with battery-powered circuits.
     
  4. Marwa Tayahi

    Thread Starter New Member

    Apr 16, 2018
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    frequency range is betwen 100MHZ and 160 MHZ.
    we used varcator to control th frequency
     
  5. bertus

    Administrator

    Apr 5, 2008
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  6. Marwa Tayahi

    Thread Starter New Member

    Apr 16, 2018
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    I have a variable frequency oscillator between 100 and 150 MHz I have to display the frequency by a dsp processor like stm32 or TMS320 ..., someone help me to choose a dsp processor or ADSP
     
  7. danadak

    Well-Known Member

    Mar 10, 2018
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    Basically you have to build a freq counter, and therefore counters have to
    be able to cout at a rate of 150 Mhz max. "Normally" this has been done
    in the past using a fixed prescaler and subsequent low speed counters in the
    counter chain.

    Today one can get fast counters in FPGA technology.

    Something like this (1 channel, ignore other 3 channels) -

    [​IMG]

    Regards, Dana.
     
  8. WBahn

    Moderator

    Mar 31, 2012
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    This sounds like homework. Is it?
     
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