Apparatuses are presented. The apparatus includes a sensor configured with an adjustable accuracy setting to measure a physical parameter and a controller configured to adjust the accuracy setting based on a threshold, and to adjust the threshold based on the physical parameter measured by the sensor. Another apparatus includes a sensor configured with a plurality of sensor accuracy settings to measure a physical parameter of a circuit in a plurality of operating regions. The plurality of operating regions is based on ranges of the physical parameter measured by the sensor. Each of the plurality of sensor accuracy settings corresponds to one of the plurality of operating regions. A controller is configured to adjust one of the ranges of the physical parameter for one of the plurality of operating regions, in response to a change of an operating condition of the circuit.