Author Topic: Please take a look at the remote control crystal oscillator ?  (Read 782 times)

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Offline 928928

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Please take a look at the remote control crystal oscillator ?
« on: December 14, 2018, 06:11:33 am »
Knowing the basic of crystal oscillators helps users ask the right questions when choosing a device for their designs.
Recently, I read an article about crystal oscillator(to know more about the article, one can visit the website: http://www.apogeeweb.net/article/147.html), which talked about the functions and working principles of the crystal oscillator. I think this passage is very useful, and help me a lot when I studied the crystal oscillator.
In fact, now I am meeting a problem, which is about the following picture.
Is this active or passive? Can I replace it with another brand? What does 13.000 79.79 mean?
It makes me confused. So if you know the answer, could you please share it to me? Thanks a lot.
 

Online DaJMasta

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Re: Please take a look at the remote control crystal oscillator ?
« Reply #1 on: December 14, 2018, 06:52:56 am »
Looks like a 13MHz MEMS oscillator.  You get the same pinout and size, probably wouldn't be a problem to replace.
 
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Offline 928928

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Re: Please take a look at the remote control crystal oscillator ?
« Reply #2 on: December 14, 2018, 07:15:53 am »
ok thanks a lot ;)
 

Offline TurboTom

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Re: Please take a look at the remote control crystal oscillator ?
« Reply #3 on: December 14, 2018, 10:28:01 am »
To me this rather looks like a plain "passive" crystal or ceramic resonator. The two identical/similar capacitors at the traces that both lead to the two adjacent pins of the PLL / clock generator chip (or whatever the small QFN is) are the load caps of the resonator, hence no "active" oscillator. I may be wrong though...
 
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Offline perieanuo

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Please take a look at the remote control crystal oscillator ?
« Reply #4 on: December 14, 2018, 05:05:22 pm »
To me this rather looks like a plain "passive" crystal or ceramic resonator. The two identical/similar capacitors at the traces that both lead to the two adjacent pins of the PLL / clock generator chip (or whatever the small QFN is) are the load caps of the resonator, hence no "active" oscillator. I may be wrong though...
You're right


Envoyé de mon iPad en utilisant Tapatalk
 
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Offline wraper

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« Last Edit: December 14, 2018, 05:17:15 pm by wraper »
 
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