Patent ID: 7786738
Filing Date: 2010-08-31
Classification: G01D,G01P,H01L

Abstract:
1. A system comprising: a sensor including a sensing capacitor comprising a capacitive sensor that includes a first capacitor and a second capacitor; sensing circuitry configured to receive signals from the sensor; at least one bond wire and at least one switch coupled to the sensor and the sensing circuitry, the at least one switch includes a first set of switches coupled to a first bond wire and a first conductor of the first capacitor and a second bond wire and a second conductor of the second capacitor, and a second set of switches coupled to the second bond wire and the first conductor of the first capacitor and to the first bond wire and the second conductor of the second capacitor; and at least one control signal coupled to the at least one switch and configured to control the at least one switch to separate parasitic bond capacitance of the at least one bond wire from sensing capacitance of the sensor.