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Voltage generation circuit and method thereof

  • US 20070296487A1
  • Filed: 06/21/2007
  • Published: 12/27/2007
  • Est. Priority Date: 06/21/2006
  • Status: Active Grant
First Claim
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1. A voltage generation circuit, comprising:

  • a static current circuit, the static current circuit including,an operational amplifier including an inverted input terminal configured to receive a reference potential,a first PMOS transistor including a drain and gate connected to an non-inverted input terminal and an output node of the operational amplifier, respectively, and a source connected to a power source voltage, anda first resistor connected between the drain of the first PMOS transistor and a ground; and

    a current mirror, the current mirror including,a second PMOS transistor including a source connected to the power source voltage and a gate connected to the gate of the first PMOS transistor,a first NMOS transistor including a drain and gate commonly connected to a drain of the second PMOS transistor,a second resistor connected between a source of the first NMOS transistor and the ground,a third PMOS transistor including a source connected to the power source voltage and a gate and drain connected to each other,a second NMOS transistor including a drain connected to the drain of the third PMOS transistor and a gate connected to the gate of the first NMOS transistor,a third resistor connected between a source of the second NMOS transistor and the ground, andan output terminal connected to the source of the second NMOS transistor.

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