Patent ID: 9527277
Filing Date: 2016-12-27
CPC Classification: B41J

Claim Text:
1. A capacitive load driving circuit comprising: a modulation portion which generates a modulation signal pulse-modulated from a source signal; a ground terminal which electrically connects the modulation portion to a ground potential; a transistor which generates an amplification modulation signal amplified from the modulation signal; a low pass filter which demodulates the amplification modulation signal, generates a driving signal, and outputs the driving signal to a capacitive load; a feedback circuit which generates a feedback signal based on the driving signal, and sends back the feedback signal to the modulation portion; and a feedback terminal which electrically connects the modulation portion and the feedback circuit to each other, wherein: the modulation portion, the ground terminal, and the feedback terminal are formed on the same semiconductor substrate, the semiconductor substrate includes a power source terminal that electrically connects the modulation portion to a power source potential, and in a plan view, the ground terminal is disposed directly adjacent to the feedback terminal and the power source terminal is disposed directly adjacent to the ground terminal or the feedback terminal.