Oscillation Circuit and Buffer Thereof

An oscillation circuit, comprising:

• an oscillator, configured to provide at least one oscillation signal according to an analog control signal;
• a buffer, coupled to the oscillator, comprising:
• at least one input terminal, configured to receive the at least one oscillation signal;
• at least one output terminal, configured to provide at least one buffered signal;
• a buffer unit, coupled between the at least one input terminal and the at least one output terminal;
• a first capacitor array, coupled to the buffer unit, and configured to change a first equivalent capacitance value of the first capacitor array according to at least one first digital signal;
• and
• a second capacitor array, coupled to the buffer unit, and configured to change a second equivalent capacitance value of the second capacitor array according to at least one second digital signal;
• wherein the at least one second digital signal is generated according to the analog control signal.