Touch panel driving apparatus

A touch panel driving apparatus, configured to drive a touch panel to generate a differential signal corresponding to a detection result of the touch panel, the touch panel driving apparatus comprising:

• a driving circuit, providing a first driving signal to a driving line of the touch panel and receive a sensing signal from a sensing line of the touch panel during a first clock period, and provide a second driving signal to the driving line and receive the sensing signal from the sensing line during a second clock period;
• a first integrating sampling circuit, coupled to the driving circuit to receive the sensing signal during the first clock period, and generating a first end signal of the differential signal, wherein a level of the first end signal is in a common mode signal range of the differential signal when a sensing electrode of the sensing line does not detect a touch event, and the first integrating sampling circuit pulls up the level of the first end signal out of the common mode signal range according to the sensing signal when the sensing electrode of the sensing line detects the touch event;
• and
• a second integrating sampling circuit, coupled to the driving circuit to receive the sensing signal during the second clock period, and generating a second end signal of the differential signal, wherein a level of the second end signal is in the common mode signal range when the sensing electrode of the sensing line does not detect the touch event, and the second integrating sampling circuit pulls down the level of the second end signal out of the common mode signal range according to the sensing signal when the sensing electrode of the sensing line detects the touch event.