Patent ID: 6118262
Filing Date: 2000-09-12
Classification: H03M

Abstract:
A voltage generating circuit comprising:a first voltage dividing circuit for dividing a voltage between a first reference power supply and a second reference power supply and generating an output signal having a divided voltage, the first voltage dividing circuit including,a first impedance element connected to a first terminal to which the first reference power supply is provided,a second impedance element having an impedance substantially the same as that of the first impedance element and connected to a second terminal to which the second reference power supply is provided, anda third impedance element connected between the first impedance element and the second impedance element and having a predetermined impedance;a first current source connected to a first node provided between the first impedance element and the third impedance element; anda second current source connected to a second node provided between the second impedance element and the third impedance element,wherein the first current source and the second currentsource supply a first control current and a second control current, which are related to each other, to the first node and the second node, respectively, and change the potentials of the first node and the second node to potentials corresponding to the first control current and the second control current, respectively, while the potential difference between the first node and the second node is maintained constant.