Temperature Reading RTD + NTC - Problem

[Anonymous]

Hello Guys,

   

I need help regarding with the RTD and NTC temperature ADC settings. I have downloaded sample of RTD and NTC of CY8CKIT-025 - Temperature board kit. I'm using CY8CKIT-030 as my devkit. NTC and RTD have different ADC_DelSig block settings/value according from the samples that I downloaded from Cypress. I can't merge the two temperature sensor since these sensors have different ADC settings. What is the correct settings of the ADC_DelSig in order for me to combine the two sensor in one application?

   

Thanks Guys. I would really appreciate your help.

   

Red

[Anonymous · Accepted solution]

 Hi Redz,

   

A 20-bit ADC ensures that you have a 0.1C flicker free resolution for RTD. A thermistor on the other hand requires <16-bit ADC for 0.1C resolution. But you can very well use a 20-bit ADC and +/-1.024V for the thermistor too if you want to use the same ADC configuration for both RTD and thermistor

   

Regards,

   

Praveen

[Anonymous]

Hi Praveen, 

   

Thank you so much for your quick response.

   

Regards,

   

Red

[Bob_Marlowe]

The ADC in PSoC3 and PSoC5 has the ability to specirfy up to 4 different configurations from which you may select or switch to at run-time with an API. So depending on the requirements of your application you may program an universal solution or select a specialized one.

       

Happy coding

   

Bob

[Anonymous]

 Thanks Bob. .