To solve these problems, we have proposed a sensor system
that compares sequential readings at two voltages to determine
circuit I − T dependence [16], as shown in Fig. 1. While our
previous dependence sensor work concentrated on proving system
functionality, this brief concentrates on chip design issues
such as linearity, calibration (and compensation for process
variations), and validation of the design with chip measurements.
The remainder of this brief is organized as follows:
The temperature dependence sensor system chip is described
in Section II, measurement results are discussed in Section III,
and conclusions are provided in Section IV.