Abstract: The present invention relates to the application of a free-tunning clock signal in a pulse-width modulator (PWM) Specifically there is disclosed an integrated circuit comprising a pulse-width modulator (2) for converting an input signal (6) into a pulse-width-modulated signal (8), the pulse-width modulator (2) being clocked by a clock signal (4) generated by a clock generator (3) which generates a free-running clock signal In a preferred embodiment of the invention, the clock generator (3) is provided in the same integrated circuit (1), such as a chip, as the digital pulse-width modulator (2).