Invention Grant
US09539805B2 Liquid discharging apparatus, head unit, capacitive load driving circuit, and integrated circuit device for capacitive load driving 有权
液体排放装置,头单元,电容性负载驱动电路,以及用于容性负载驱动的集成电路装置

Liquid discharging apparatus, head unit, capacitive load driving circuit, and integrated circuit device for capacitive load driving
Abstract:
There is provided a liquid discharging apparatus including: an integrated circuit device; a feedback circuit; a transistor which generates an amplification modulation signal amplified from a modulation signal pulse-modulated from a source signal, based on an amplification control signal; a low pass filter which demodulates the amplification modulation signal and generates a driving signal; and a piezoelectric element which is displaced as the driving signal is applied, in which the integrated circuit device includes a modulation portion which generates the modulation signal; a gate driver which generates the amplification control signal based on the modulation signal; and a feedback terminal which is electrically connected to the modulation portion and the feedback circuit, in which the feedback circuit generates a feedback signal based on the driving signal and sends back the feedback signal to the modulation portion.
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