1. Estimate the self heating of the Xducer assuming that the Xducer has the same dimensions as one of the picture-frame resistors (8 × 25 microns) and has a doping on the order of 1017 Ohm-cm. How does this error compare with the published offset drift?
2. A Piezoresistive Treasure Hunt: Go to the literature, either in journals or in published commercial device specifications available on the web, and locate a device other than a MAP sensor that uses piezoresistive sensing. Identify the piezoresistors, estimate the mechanical loads these piezoresistors will experience and, on the basis of these estimates, determine a first-order value for the full-scale signal available prior to amplification.