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