I have been trying to test a few MPX5100DP units I received for calculating air flow. With a similar differential sensor I am able to see the expected pressure values. However, I cannot get Vout to change from its base voltage of 185/200mV.
What is the purpose of V1, V2 and Vex and what do they correspond to? I'm sorry to ask, but I could not find an explanation for those pins in the datasheet or various application notes I found.
Thank you for your help.