A good PCB layout for the LMP91002SDE/NOPB involves keeping the analog and digital grounds separate, using a solid ground plane, and placing the device close to the sensor to minimize noise. TI provides a recommended layout in the datasheet and application notes.
Calibration involves applying a known gas concentration to the sensor and adjusting the gain and offset of the LMP91002SDE/NOPB to match the expected output. TI provides a calibration procedure in the datasheet and application notes.
The LMP91002SDE/NOPB can operate from -40°C to 125°C, but the optimal operating temperature range for gas sensing is between 20°C to 40°C. Operating outside this range may affect accuracy and reliability.
The LMP91002SDE/NOPB is designed to work with specific types of gas sensors, such as electrochemical or metal oxide sensors. Using it with a different type of sensor may require additional circuitry or modifications, and may not be compatible.
To ensure EMC, use a shielded enclosure, keep the device away from high-frequency sources, and use a common-mode choke or ferrite bead to filter out noise. TI provides EMC guidelines in the datasheet and application notes.