HDC2010: Temperature accuracy cannot meet datasheet spec

Hello Ben,

1. How is the customer testing the temperature with the HDC2010. Is it a thermal forced air chamber, oil bath, etc?
2. What is the range of temperature being tested for and what is the accuracy mismatch that the customer seeing?

Hi Ashara,

thanks for your reply

1. Costumer put their board in thermal forced air chamber, and test the performance from 0~60 degree.

2. I have checked there are no any hot spots nearby HDC2010.

3. Please refer below test result

Layout

-Ben

Hello Ben,

Layout: The should not be any metal on the internal planes around the device as mentioned in the layout guidelines in the datasheet. I will assume here that the customer is following the recommendation.

1. As for the measurement, what is the soak time the customer is allowing for the temperature to be stabilized?
2. Have they tried making the same measurement with a thermal chamber (and no forced air)?
3. Is the issue reproducible on every board they are testing?

Hi Ashara,

Yes, they follow our layout recommendation. please find my update below.

1. They soak 20 mins and wait for the temperature stable. Then measure the temperature which report out by HDC2010.

2. I will check with customer

3. Yes, every board can duplicate this issue

Could you let me know which factor will impact temp accuracy if layout is good?

-Ben

Hello Ben,

Can you please confirm from the customer if there is no Copper around the HDC device as per the layout guidelines?

Hi Ashara,

As my commend before, they follow our layout guide.

Please refer below.

-Ben