Presented here is an altimeter application, but this basic information can also apply to weigh scale, or other load and pressure applications. The sensor is configured into a wheatstone bridge where then the signal goes directly into a high resolution ADC (22-bit MCP3551). The high resolution eliminates the signal gain block and the differential input reduces noise. This high resolution Delta-Sigma ADC also only consumes ~120 µA during conversion. Benefits of this configuration are cost, board space and complexities (less components), high accuracy and long battery life.