Liquid ejecting apparatus

A liquid ejecting apparatus comprising:

• a piezoelectric element that includes a first electrode to which a drive signal is supplied and a second electrode to which a criterion voltage signal is supplied, and that performs displacement by a potential difference between the first electrode and the second electrode;
• a cavity which is filled with a liquid being ejected from a nozzle by the displacement of the piezoelectric element;
• a vibration plate which is provided between the cavity and the piezoelectric element;
• and
• a first switching circuit that includes a first terminal to which the drive signal is supplied and a second terminal which is electrically connected to the first electrode, and that controls a supply of the drive signal to the first electrode,
• wherein the first switching circuit includes a PMOS transistor,
• the first terminal is electrically connected to a source terminal of the PMOS transistor,
• the second terminal is electrically connected to a drain terminal of the PMOS transistor,
• a back gate terminal of the PMOS transistor is electrically connected to one end of a switch element, and
• another end of the switch element is electrically connected to a ground terminal.