APPARATUS AND METHOD FOR DRIVING GYRO SENSOR

摘要

An apparatus for driving a gyro sensor according to the present invention comprises: a driving displacement signal processing unit configured to receive first and second driving displacement signals from a gyro sensor, generate first and second clock signals using the first and second driving displacement signals, and subsequently apply a driving signal generated by using the second clock signal (CLK_2) to the gyro sensor; a sensing signal processing unit configured to receive first and second sensing signals from the gyro sensor, generate new first and second sensing signals mixed with the first and second displacement signals by using a variable resistor, and subsequently detect a gyro signal from the generated first and second sensing signals; and an automatic quadrature signal controller configured to determine whether a quadrature signal exists in the generated first and second sensing signals, control the variable resistor through digital correction if the quadrature signal exists, and minimize the amplitude of the quadrature signal.