Patent ID: 8085078
Filing Date: 2011-12-27
Classification: H03K

Abstract:
1. A level shift circuit comprising: a first resistor including one end connected to ground; a first transistor including a drain and a gate connected to other end of the first resistor, and a source connected to a first power supply; a second transistor including a source connected to the first power supply, and a gate connected to the drain and the gate of the first transistor; a second resistor including one end connected to a drain of the second transistor; a third transistor including a source connected to other end of the second resistor, and a gate connected to an input terminal; a first current source connected between a second power supply and a drain of the third transistor; and an output stage circuit including a fourth transistor including a gate connected to the drain of the second transistor, the fourth transistor being connected between an output terminal and the first power supply.