The recommended PCB layout for the MPX5700AP involves placing the sensor on a dedicated PCB with a solid ground plane, using a 4-layer PCB with a dedicated analog ground layer, and keeping the analog and digital traces separate to minimize noise and interference.
The MPX5700AP requires a two-point calibration process, where the sensor is exposed to two known pressure points (e.g. atmospheric pressure and a known reference pressure) and the output voltage is measured and adjusted accordingly. The calibration process should be performed at the operating temperature range of the application.
The MPX5700AP's accuracy is affected by temperature, with a typical temperature coefficient of ±0.5% FS/°C. This means that the sensor's output voltage will change by ±0.5% of the full-scale range for every degree Celsius change in temperature. Temperature compensation is recommended to achieve high accuracy over a wide temperature range.
The MPX5700AP is not designed for use in humid or wet environments, as it is not hermetically sealed and can be damaged by moisture. If the sensor must be used in a humid or wet environment, it is recommended to use a protective coating or enclosure to prevent moisture ingress.
The MPX5700AP requires a stable power supply of 5V ±10% to ensure accurate operation. It is recommended to use a low-noise, regulated power supply to minimize the effect of power supply noise on the sensor's output.
