Compiler/HDC2010: HDC2010's Vdd

user5079145

Prodigy 100 points

Part Number: HDC2010

Tool/software: TI C/C++ Compiler

Please tell us about the followings

We use HDC2010 in Vdd=3.3V.but HDC2010 is specified in Vdd=1.8V(datasheet)

when Vdd is changed, Does the temperature and humidity values change?

We want to know the amount of change in temperature and humidity when Vdd is changed

over 5 years ago

0 Josh Wyatt over 5 years ago

TI__Guru* 91206 points

Dear user5079145 -

we have seen ~+0.2C rise from the higher voltage, which would result in ~-0.2%RH value.

0 user5079145 over 5 years ago in reply to Josh Wyatt

Prodigy 100 points

Thank you for the information.

If Vdd = 1.8v and the temperature is 30.0C, does VDD = 3.3V mean temperature will be 30.2C?

Is my understanding correct??

0 Josh Wyatt over 5 years ago in reply to user5079145

TI__Guru* 91206 points

Dear user079145 -

Please see graph below I have generated for you to reference. Here you can see the part output varies based on input voltage, and that it stays within spec of the device, which is +/-0.2C typical and +/-0.4C max

0 user5079145 over 5 years ago in reply to Josh Wyatt

Prodigy 100 points

I saw the graph. Is HDC2010 on Comp Board one test sample ?

I want to know the maximum temperature change when Vdd is changed from 1.8v to 3.3v.

Why does the temperature change when VDD changes? Please tell me the principle.

0 Josh Wyatt over 5 years ago in reply to user5079145

TI__Guru* 91206 points

self heating is the principle.

the max change observed over the voltage input range will follow the data sheet specifications. +/-0.2C typical, +/-0.4C max

Sensors

Sensors forum

Compiler/HDC2010: HDC2010's Vdd