AC-COUPLED SENSOR SIGNAL CONDITIONING CIRCUIT
A method and apparatus for minimizing errors in a sensor device due to signal amplitude variation are disclosed herein. A signal output from the sensor device is amplified (207) and thereafter, AC-coupled (209) to a comparator (209) such that the amplification and AC-coupling (209) of the signal minimizes offset shift-related errors associated with the sensor device. The signal can be coupled to eliminate offset shifts due to component mismatches, calibration, aging and/or temperature associated with the sensor device. An AC-coupled sensor signal conditioning circuit (200) is utilized to amplify the signal through an amplifier and then AC-couple the signal to a comparator (209).