Reference voltage-generating circuit

摘要

A reference voltage circuit which generates a reference voltage having a good temperature characteristic as a drive voltage for a semiconductor integrated circuit, wherein a constant current source is connected to a power supply terminal; the output terminal of the constant current source is grounded through series-connected resistors; the junction of the series-connected resistors is connected to the bases of first and second NPN transistors; the first transistor has its collector connected to the constant current source, and its emitter grounded; the second transistor has its collector connected to the emitter of a third NPN transistor and its emitter grounded through a resistor; the third transistor has its base connected to the constant current source and its collector connected to the power supply terminal; and a reference voltage is sent forth from the emitter of the third transistor.