Invention Grant
US09539804B2 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: a modulation portion which generates a modulation signal pulse-modulated from a source signal; a gate driver which generates an amplification control signal based on the modulation signal; a boosting circuit which boosts and supplies a voltage to the gate driver; a transistor which generates an amplification modulation signal amplified from the modulation signal based on the 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 gate driver and the boosting circuit are electrically connected to a common ground terminal, and in which a wiring impedance between the ground terminal and the gate driver is smaller than a wiring impedance between the ground terminal and the boosting circuit.
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