REFERENCE VOLTAGE GENERATING CIRCUIT AND A REFERENCE VOLTAGE GENERATING METHOD CAPABLE OF DECREASING TEST TIME FOR CONTROLLING A REFERENCE VOLTAGE

摘要

PURPOSE: A reference voltage generating circuit and a reference voltage generating method are provided to reduce time for controlling a plurality of reference voltages by controlling a basic voltage for generating a plurality of reference voltages.;CONSTITUTION: A basic voltage control unit(300) generates a basic voltage control signal according to recorded information. A basic voltage generating unit generates a basic voltage which has a level changed according to a basic voltage control signal if the basic voltage generating unit is activated in response to an external voltage. A reference voltage generating unit(200) generates a plurality of reference voltages by receiving the basic voltage. The reference voltage generating unit generates a reference current in response to an external voltage and provides the reference current to the basic voltage output unit. A basic voltage output unit generates a basic voltage which has a different level according to the basic voltage control signal based on the reference current.;COPYRIGHT KIPO 2012