sa612 mixer help please

Discussion in 'General Electronics Chat' started by matbymay, Aug 13, 2009.

  1. matbymay

    Thread Starter Member

    Jul 14, 2009
    27
    0
    hi everbody

    i have sa612 mixer and oscillator IC. i would like to mix two signal one is 19mhz another is 20mhz and output will be 39mhz and 1mhz (f1+f2, f1-f2) with theory. but i m not sure how can mix them using sa612.

    thank you
    regards
     
  2. bertus

    Administrator

    Apr 5, 2008
    15,647
    2,346
    Hello,

    The SA612 has an oscillator on pins 6 and 7,
    between these pins you must make a tuned circuit for the oscillator.
    Pins 1 and 2 are the inputs.
    Pins 4 and 5 are the output pins,
    here you connect a tuned circuit to get the mixed result.

    See also the attached datasheet.

    Greetings,
    Bertus
     
  3. matbymay

    Thread Starter Member

    Jul 14, 2009
    27
    0
    thank you for answers
    but i have read the datasheet i used crystal oscillator tuned (20 mhz)circuit pin 6-7 actually working fine but when i connect to input pin 1-2 (for example 1 Mhz) it dosent give any output
    i tried short cut to pin 1 and pin 2 and connected input both aswell but same result

    any ideas where i was wrong?
     
  4. Ron H

    AAC Fanatic!

    Apr 14, 2005
    7,050
    657
    You need to post a schematic of what you are doing.
     
  5. bertus

    Administrator

    Apr 5, 2008
    15,647
    2,346
    Hello,

    Did you have a look at fig. 5 of the datasheet?
    There are three input configurations mentioned.

    Greetings,
    Bertus
     
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