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PSoC 5, 3 & 1 MCU

Anonymous
Not applicable

Hi,

   

I want to multiply two signals using a mixer. But i want to give clock a sign signal. I tried to do that but it shows an error signal attached with this message.

   

Please guide me how i can do this.

   

Looking forward for your reply

   

Best Regards

   

Awais

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1 Solution
Esteemed Contributor II

When you take a look into the mixer's datasheet, Input/Output Connections, you will see that LO is a digital signal and not an analog one. On page 2 is a picture showing how an Up Mixer works.

   

So getting a true analog product of the two signals will not be possible this way.

   

 

   

Bob

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Anonymous
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I want to Multiply my analog sine signal with clock, which should also be sine signal.

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Esteemed Contributor II

When you take a look into the mixer's datasheet, Input/Output Connections, you will see that LO is a digital signal and not an analog one. On page 2 is a picture showing how an Up Mixer works.

   

So getting a true analog product of the two signals will not be possible this way.

   

 

   

Bob

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Anonymous
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Yes Bob you are right. But I want to Multiply two signals. 1st is my message signal which is in analog form and the 2nd one should also be in analog form with same phase. How i can do this?

   

Is it really possible?

   

Looking forward for your reply.

   

Best Regards

   

Awais

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Esteemed Contributor

The mixer is not a Gilbert Cell mixer as in full analog, look at its functional

   

description in datasheet.

   

 

   

To use sine as LO use a comparator as follows (attached).

   

 

   

Regards, Dana.

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Esteemed Contributor

If you need true analog then consider SAR >> DFB Filter >> VDAC as solution.

   

 

   

The Mult occurs in code or DFB -

   

 

   

http://www.cypress.com/?rID=60720     DFB Assembler, MAC Topics

   

http://www.cypress.com/?app=forum&id=2492&rID=76907     DFB Assembler

   

https://www.youtube.com/watch?v=2UC4gCohrk8      DFB Video Part I

   

https://www.youtube.com/watch?v=6tr_CNWIA8M     DFB Video Part II

   

https://www.youtube.com/watch?v=nIa4X7gES3k     DFB Video Part III

   

 

   

This all depends on analog BW needed and dynamic range and....

   

 

   

Regards, Dana.

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Anonymous
Not applicable

Thank you for your valuable reply.

   

Now, What i concluded is, i can only implement lock in amplification (Multiplication of two signals having same phase) in PSOC through digital signals?

   

This means i have to convert my input signals into digital form and then performs filtering and amplification stuff?

   

Am i correct?

   

Looking forward for your reply.

   

Regards

   

Awais

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Esteemed Contributor

One approach done in PSOC 1 -

   

 

   

https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=2&cad=rja&uact=8&ved=0CCYQFjABahUKEwi_...

   

 

   

Regards, Dana.

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Anonymous
Not applicable

Thankyou so much for this.

   

I am not sure how i can control the phase through this approach.

   

Do you have any idea?

   

Best Regards

   

Awais

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