Pressure measurement is critical in many process industries. For commercial purposes, industry uses a variety of pressure sensors for measurement, including sensors based on Micro Electro-Mechanical Systems (MEMS) technology. In this paper, a comparative study with two different Pulse-Width Modulation (PWM) based MEMS pressure sensor has been made. A similar study was made on a sensor with parallel plate mechanical switch and a cantilever based mechanical switch. The result shows that a better mechanical stability can be achieved by the parallel plate structure and better stability is achieved with cantilever structure.