Switch control circuit, semiconductor device, and radio communication device
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United States of America Patent
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Apr 28, 2015
Grant Date -
Apr 24, 2014
app pub date -
Dec 26, 2013
filing date -
Feb 17, 2012
priority date (Note) -
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Abstract
A switch control circuit has level shifters connected to a switch circuit to convert voltage levels of control signals, a negative potential generating circuit connected to the level shifter, to generate a negative potential, a negative potential output line supplying the negative potential to the level shifter, and a negative potential output line control circuit configured to control the potential of the negative potential output line. The negative potential output line control circuit has a power-supply setting circuit, an inverter inverting the output signal from the power-supply setting circuit, a first capacitor connected between an output terminal of the inverter and the negative potential output line, and a negative potential initialization circuit.
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