Patent ID: 8390339
Filing Date: 2013-03-05
Classification: H03K

Abstract:
1. A semiconductor switch comprising: a power-supply regulator generating voltages; a switch section, provided on a substrate, switching connection states among a plurality of terminals; a positive voltage generator generating a positive potential higher than a supply potential supplied by the power-supply regulator, the positive voltage generator having an output capacitor; a negative voltage generator generating a negative potential from the supply potential supplied by the power-supply regulator, the negative voltage generator having an output capacitor, a capacitance of the output capacitor of the negative voltage generator being smaller than a capacitance of the output capacitor of the positive voltage generator; a driver, connected to the positive voltage generator and the negative voltage generator, supplying a control signal to the switch section in response to a terminal switching signal, a high level of the control signal being equal to the positive potential, a low level of the control signal being equal to the negative potential; and a voltage controller controlling the positive potential supplied to the driver.