The recommended PCB layout for the MPX5700A involves placing the sensor on a dedicated PCB with a solid ground plane, using a 4-layer PCB with a dedicated power plane, and keeping the signal traces as short as possible to minimize noise and interference.
The MPX5700A requires a two-point calibration process, where the sensor is exposed to two known pressure points (e.g. atmospheric pressure and a known pressure reference) and the output voltage is measured and recorded. The calibration data can then be used to create a linearization curve for the sensor.
While the datasheet specifies a maximum pressure range of 700 kPa, the MPX5700A can actually measure pressures up to 1000 kPa with reduced accuracy. However, it's recommended to operate the sensor within the specified range for optimal performance.
The MPX5700A has a built-in temperature sensor that can be used to compensate for temperature effects on the pressure measurement. The temperature data can be used to correct the pressure reading using the temperature coefficient specified in the datasheet.
The recommended power supply voltage for the MPX5700A is 5V ± 10%, with a minimum voltage of 4.5V and a maximum voltage of 5.5V. Operating the sensor outside of this range may affect its accuracy and reliability.
