SDP3X power supply, 5V or 3V


We are having some problems with Sensirion’s SDP33 sensor

Reading the datasheet of the SDP33 sensor we can see that it needs 5V. Although we are supplying that voltage via a pixhawk 2.1, we are just wondering how the actual sensor is powered inside the drotek package: is the 5V directly given to the sensor or is there an internal voltage regulator to 3V, and those 3V are given to the sensor?

With this question we are trying to exclude power issues.