A capacitive load drive circuit includes a modulation circuit adapted to pulse-modulate a drive waveform signal to thereby generate a modulation signal, two switching elements (transistors) constituting a push-pull circuit and adapted to generate a power-amplified modulation signal, a low-side driver and a high-side driver adapted to switch ON/OFF of the respective switching elements, a bootstrap circuit, a power supply adapted to supply the low-side driver and the high-side driver with a predetermined electrical potential, and a first resistor disposed in a supply channel from the power supply to the bootstrap circuit.
