We are evaluating the MP3V5004GP sensor in an application where water level can range between 0 and 300 mm. We got some samples today. We are finding that this sensor works ok up to around 155 mm of water. Beyond that the sensor is not tracking the water level properly. We have interfaced the sensor o/p to an MSP430 with 10 bit ADC through an op amp buffer. Vcc is around 3.3 V. ADC reference voltage is 2.5 V. We are using the bypass capacitors shown in the datasheet. This sensor's range is 0 to 3.92 kPa (400 mm of water).
Thanks in advance