Capacitance detection circuit, touch control chip and electronic device

A touch control chip, comprising a capacitance detection circuit, wherein the capacitance detection circuit is configured to detect a capacitance of a capacitor to be detected, the capacitor to be detected being a capacitor for touch detection in a screen of an electronic device, and the capacitance detection circuit comprises:

• an amplification circuit connected to the capacitor to be detected, and configured to convert a capacitance signal of the capacitor to be detected into a voltage signal, the voltage signal being associated with the capacitance of the capacitor to be detected;
• and
• a control circuit connected to the amplification circuit, and configured to control an amplification factor of the amplification circuit to be a first amplification factor in a first period, and to control the amplification factor of the amplification circuit to be a second amplification factor in a second period, wherein noise generated by the screen in the first period is less than noise generated by the screen in the second period, and the first amplification factor is greater than the second amplification factor.