Liquid discharging apparatus, head unit, capacitive load driving circuit, and integrated circuit device for capacitive load driving
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United States of America Patent
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Jan 10, 2017
Grant Date -
Jun 16, 2016
app pub date -
Dec 8, 2015
filing date -
Dec 11, 2014
priority date (Note) -
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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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