Reference voltage generating circuit

摘要

A collector and a base of a first, a second transistors are each short circuited. The second transistor has a current density larger than that of the first transistor. A first resistor is connected between the emitter of the first transistor and a ground potential node. One end of a second resistor is connected to the first transistor. One end of a third resistor is connected to the second transistor. The other end of the third resistor is connected commonly to the other end of the second resistor. An operational amplifier circuit has an inverting input terminal connected to the one end of the second resistor and a non-inverting input terminal connected to the one end of the third resistor. A reference voltage regulating output circuit is inserted between the output terminal of the operational amplifier circuit and the other ends of the second, the third resistors.