Liquid ejecting apparatus, drive circuit, and head unit

A drive circuit which drives a capacitive load in response to a drive signal, comprising:

• a differential amplifier that outputs a control signal based on a difference voltage between a source drive signal which is a source signal of the drive signal and a signal based on the drive signal;
• a pair of transistors that include a high-side transistor and a low-side transistor which are controlled based on the control signal and outputs the drive signal from an output terminal;
• a selector that selects one of the high-side transistor and the low-side transistor and supplies the control signal to the selected transistor;
• a first resistance element having one terminal that is electrically coupled to the output terminal and having the other terminal that receives a first voltage;
• and
• a second resistance element having one terminal that is electrically coupled to the output terminal and having the other terminal which receives a second voltage lower than the first voltage.

A head unit comprising:

• a piezoelectric element which is displaced by a drive signal being applied to the piezoelectric element;
• and
• an ejecting unit that includes the piezoelectric element and ejects liquid in accordance with displacement of the piezoelectric element, wherein
• the ejecting unit is driven by a drive unit which includes,
• a differential amplifier that outputs a control signal based on a difference voltage between a source drive signal which is a source signal of the drive signal and a signal based on the drive signal;
• a pair of transistors that include a high-side transistor and a low-side transistor which are controlled based on the control signal and outputs the drive signal from an output terminal;
• a selector that selects one of the high-side transistor and the low-side transistor and supplies the control signal to the selected transistor;
• a first resistance element having one terminal that is electrically coupled to the output terminal and having the other terminal that receives a first voltage;
• and
• a second resistance element having one terminal that is electrically coupled to the output terminal and having the other terminal which receives a second voltage lower than the first voltage.