Integrator circuit device and operating method for the same

Disclosed is an integration circuit device which comprises: an integrator for integrating an input signal in a positive direction or in a negative direction; a switch control unit for controlling at least one switch such that the integrator integrates in either the positive direction or the negative direction; a counter for counting the number of changing an integration direction of the integrator; and a control unit for determining a final output voltage based on a voltage output by the integrator and the number of changing an integration direction. The integration circuit device can expand a measurable voltage regardless of a capacitance of a capacitor included in a sensor to sense an input of a touch or the like.