Liquid ejecting apparatus, drive circuit, and integrated circuit

A drive circuit that outputs a drive signal for driving a capacitive load, the drive circuit comprising:

• an integrated circuit that outputs an amplification control signal based on a base drive signal;
• an amplifier circuit that operates according to the amplification control signal to output an amplified modulation signal;
• and
• a demodulation circuit that demodulates the amplified modulation signal to output the drive signal, wherein
• the integrated circuit includes:
• a modulation circuit that modulates the base drive signal to output a modulation signal;
• a switching circuit that outputs the amplification control signal according to the modulation signal;
• and
• a constant voltage output circuit that outputs a DC voltage signal based on the output of the modulation circuit,
• the constant voltage output circuit and the modulation circuit are electrically coupled to each other, and
• at least a part of the constant voltage output circuit is located between the modulation circuit and the switching circuit.

An integrated circuit used in a drive circuit that outputs a drive signal for driving a capacitive load, the integrated circuit comprising:

• a modulation circuit that modulates a base drive signal that is a basis of the drive signal to output a modulation signal;
• a switching circuit that outputs an amplification control signal according to the modulation signal;
• and
• a constant voltage output circuit that outputs a DC voltage signal based on the output of the modulation circuit, wherein
• the constant voltage output circuit and the modulation circuit are electrically coupled to each other, and
• at least a part of the constant voltage output circuit is located between the modulation circuit and the switching circuit.