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PSoC 4 MCU

7 Replies
ETRO_SSN583
Esteemed Contributor

If trying to do an up mixer yes -

   

 

   

   

 

   

For the down mixer possibly with internal OpAmp and mux/switches

   

 

   

   

 

   

Possibly port the component to PSOC 4 from 3, 5LP.

   

 

   

You might file a CASE on  this, I see as principal limiting problem PSOC 4 routability not

   

as flexible as 3, 5LP.

   

 

       

To create a technical or issue case at Cypress -

   

 

   

www.cypress.com

   

“Support”

   

“Technical Support”

   

“Create a Case”

   

 

   

You have to be registered on Cypress web site first.

   

 

   

Regards, Dana.

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Anonymous
Not applicable

Thank you so much for your valuable answer.

   

One more thing, How should i gave Vdda/2 voltage? is it externally?

   

Also i want to program my PGA for all its range. The idea is to increase gain so that the output reaches 1 V, if the input value is less than 1 V. How can i do this automatically?

   

I am also attaching my project file.

   

Looking forward for your reply.

   

 

   

Best Ragards

   

Awais

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ETRO_SSN583
Esteemed Contributor

Look in datasheet, API section, there is a f() call to set the G

   

of the PGA, PGA_SetGain(uint8 gain)

   

 

   

 

   

 

   

Vref is a component you can place on schematic.

   

 

   

Regards, Dana.

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ETRO_SSN583
Esteemed Contributor

Vdd / 2 is one of the setting that can be used for the Vref -

   

 

   

   

 

   

   

 

   

   

 

   

Regards, Dana.

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Anonymous
Not applicable

Thank you so much for these quick suggestions. It means alot 🙂

   

I will look into it.

   

Thankyou once again.

   

Regards

   

Awais

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ETRO_SSN583
Esteemed Contributor

Glad to have been helpful.

   

 

   

Regards, Dana.

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ETRO_SSN583
Esteemed Contributor

One thing about Vref, it is, relatively speaking, a HiZ source, so

   

normally one buffers it with an OpAmp follower.

   

 

   

The Vref is buffered by 5 uA buffers -

   

 

   

   

 

   

Regards, Dana.

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