Interfacing and Instrumentation Amplifiers

You are building a digital scuba gauge (effectively, a device that displays the current depth and pressure) using the pressure transducer that you selected in the previous problem. You will be marketing this gauge towards commercial scuba divers that are certified to dive as much as 30m (corresponding to IDSA Level 1-2). Therefore, you decided to build the device to output 5V when the pressure is the gauge pressure at 30m depth, and 0V when you are not in water (0 gauge pressure). Write a relationship between the output voltage vout,2 and the gauge pressure p in this case.

Sample Solution