sa612 mixer help please

Thread Starter

matbymay

Joined Jul 14, 2009
27
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
 

bertus

Joined Apr 5, 2008
22,278
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
 

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Thread Starter

matbymay

Joined Jul 14, 2009
27
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?
 

bertus

Joined Apr 5, 2008
22,278
Hello,

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

Greetings,
Bertus
 
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