ADC_DelSig Example project

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Anonymous
Not applicable

hi to all

   

Can any body explain: In the example project for psoc 3 in creater 2.0 of ADC Differential configuration mode, why VDAC is connected to negative terminal of ADC, what is its purpose?

   

Regards

   

Rajendra

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1 Solution
ETRO_SSN583
Level 9
Level 9
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Answered on www.psocdeveloper.com

   

 

   

Regards, Dana.

View solution in original post

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3 Replies
ETRO_SSN583
Level 9
Level 9
250 likes received 100 sign-ins 5 likes given

Answered on www.psocdeveloper.com

   

 

   

Regards, Dana.

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HeLi_263931
Level 8
Level 8
100 solutions authored 50 solutions authored 25 solutions authored

Now you just need to link to the correct posting (a search for ADCDelSig on psocdeveloper yields nothing suitable).

   

Thanks,

   

hli

Anonymous
Not applicable

 Hi Rajendra,

   

 

   

As you can see in ADC component configuration window, input range of ADC is Vin- - Vref to Vin+ + Vref. So if you bias your input time varying signal to a DC voltage >= Vref, then you will get the complete dynamic range of ADC. Otherwise, your input range will get shortened. That is why you can see the VDAC constant reference voltage to the -ve Input of ADC.

   

 

   

Regards,

   

Kishore.

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