ST LPS22HB - Page 4

List of figures
AN4672
4/24
DocID027655 Rev 3
List of figures
Figure 1: Pressure sensor system integration ............................................................................................ 5
Figure 2: Pressure sensor integration and embodiment reference ............................................................ 8
Figure 3: Pressure sensor integration and embodiment with vent channel ................................................ 8
Figure 4: Heating isolation implemented for protecting the sensor ............................................................ 9
Figure 5: Top view of the sensor housing: on the left a correct design with the heat isolation, on the right
a wrong design .......................................................................................................................................... 10
Figure 6: Sensor with a correct sensor placement on the PCB to get the appropriate isolation from heat
sources ..................................................................................................................................................... 10
Figure 7: Sensor with a bad wiring on the PCB ........................................................................................ 11
Figure 8: Sensor wiring with wrong placement on the PCB ..................................................................... 11
Figure 9: Bad configuration for mechanical stress (a) .............................................................................. 12
Figure 10: Bad configuration for mechanical stress (b) ............................................................................ 12
Figure 11: Good configuration for avoiding mechanical stress and reducing the dead volume (a) ......... 12
Figure 12: Good configuration for avoiding mechanical stress and reducing the dead volume (b) ......... 13
Figure 13: Example of good sensor embodiment and housing ................................................................ 14
Figure 14: Example of good sensor embodiment and housing with airflow channel ............................... 14
Figure 15: Example of a bad sensor embodiment and housing ............................................................... 15
Figure 16: Integration of the digital pressure sensor device in a sensor chamber with two vent apertures
.................................................................................................................................................................. 16
Figure 17: Device integration reference in a portable device ................................................................... 17
Figure 18: FIFO moving average filter scheme ........................................................................................ 21