Touch controller, method thereof, and devices having the touch controller

PURPOSE: A touch controller, an operating method thereof, and devices including the same are provided to remove a display noise in a display common electrode by differentially sensing two of channels. CONSTITUTION: Pins(PIN1-PINh) are connected to channels(Chx1-Chyn) respectively, a selector(110) selects two channels from the channels in response to a selection signal. A differential sensing block(120) converts a charge corresponding to first and second currents in the two channels into an output voltage. The differential sensing block includes a current transmitter sensing the first current to extract the sensed first current as a control current and a charge amplifier converting a difference current between the second current and the control current into the output voltage.