Voltage generating device

摘要

A voltage generating device is capable of generating a voltage which does not depend upon temperature even if a power source voltage is not higher than 1.25 V. The device comprises an output terminal thereof, current sources, resistors and a diode like connected transistor. A voltage on the output terminal is obtained by causing a current to flow through series-connected resistors. The current sources are band gap current sources. The current source is assumed as opened. A part of the diode like connected transistor is represented by an equivalent circuit including a voltage source and a resistor. The equivalent circuit and the resistors are represented by an equivalent circuit by using the Thevenin's theorem.