Liquid ejecting apparatus, drive circuit, and integrated circuit

A liquid ejecting apparatus comprising:

• an ejecting unit that includes a piezoelectric element and ejects liquid by driving the piezoelectric element;
• a first drive circuit that is mounted on a front surface of a circuit substrate and generates a first drive signal from a first original drive signal which is an origin of the first drive signal driving the piezoelectric element in accordance with a first voltage and a second voltage higher than the first voltage;
• and
• a second drive circuit that is mounted on a rear surface of the circuit substrate and generates a second drive signal from a second original drive signal which is an origin of the second drive signal driving the piezoelectric element in accordance with the first voltage and the second voltage,
• wherein the first drive circuit includes,
• a first control circuit;
• a first pair of transistors to which the first voltage is applied;
• and
• a second pair of transistors which is electrically coupled in series to the first pair of transistors and to which the second voltage is applied,
• wherein the first control circuit is integrated into a first integrated circuit, and outputs a first control signal for controlling an operation of the first pair of transistors and a second control signal for controlling an operation of the second pair of transistors respectively, in accordance with the first original drive signal,
• wherein the second drive circuit includes,
• a second control circuit;
• a third pair of transistors to which the first voltage is applied;
• and
• a fourth pair of transistors which is electrically coupled in series to the first pair of transistors and to which the second voltage is applied,
• wherein the second control circuit is integrated into a second integrated circuit, and outputs a third control signal for controlling an operation of the third pair of transistors and a fourth control signal for controlling an operation of the fourth pair of transistors respectively, in accordance with the second original drive signal,
• wherein the first integrated circuit includes,
• a first terminal to which the first voltage is applied;
• and
• a second terminal to which the second voltage is applied,
• wherein the second integrated circuit includes,
• a third terminal to which the first voltage is applied;
• and
• a fourth terminal to which the second voltage is applied,
• wherein the first integrated circuit and the second integrated circuit are disposed on the circuit substrate such that a distance between the first terminal and the third terminal is shorter than a distance between the first terminal and the fourth terminal, and
• wherein the first integrated circuit and the second integrated circuit are disposed on the circuit substrate such that a distance between the second terminal and the fourth terminal is shorter than a distance between the second terminal and the third terminal.