reference design to obtain +/-0.01 accuracy degree with ADS 1247/1248

Rui Li

Other Parts Discussed in Thread: ADS1247, ADS1248EVM-PDK, ADS1248

Hi,

I am developing a wireless temperature sensor which requests the accuracy up to +/- 0.01 Celsius degree. I am planning to use ADS1247 or 1248 as the ADC, 4 wire PT100 will be used as the temperature sensor. Where can I get a reference design with above mentioned items to achieve this accuracy? thank you very much for any information provided.

over 14 years ago

0 Tom Hendrick over 14 years ago

TI__Guru**** 180931 points

Hi Rui Li,

Welcome to the forum! You can start with the ADS1247EVM-PDK or the ADS1248EVM-PDK as the basis of your system. These evaluation boards come with the hardware and software you need to get started with the exception of the four-wire sensor.

0 Luis Chioye over 14 years ago in reply to Tom Hendrick

TI__Guru 55466 points

Hi Rui Lui,

In addition to checking the ADS1247EVM-PDK and/or ADS1248EVM-PDK, find additional information in setting up the ADS1248 and ADS1247 with a 4-wire RTD configuration in the application note "Example Applications For Temperature Measurement Using the ADS1247 and ADS1248". It includes some guidelines and examples measuring RTD's in three wire and four-wire configurations. Please find link below:

http://focus.ti.com/general/docs/litabsmultiplefilelist.tsp?literatureNumber=sbaa180

Regards,

Luis

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reference design to obtain +/-0.01 accuracy degree with ADS 1247/1248