Patent ID: 8816670
Filing Date: 2014-08-26
Classification: G05F,H03F

Abstract:
1. An electronic circuit, comprising: a band-gap reference circuit comprising an operational amplifier which has an output and first and second inputs, said band-gap reference circuit being configured to generate a predetermined reference voltage at the output of the operational amplifier after a start-up phase of the band-gap reference circuit; and a start-up circuit comprising at least one switch arranged to electrically connect at least one current source to at least one of the inputs of the operational amplifier during the start-up phase, and to electrically disconnect the at least one current source from said at least one of the inputs of the operational amplifier after the start-up phase, wherein the band-gap reference circuit further comprises: said at least one switch is coupled to a middle point of at least one of said current paths and arranged to inject a current from the at least one current source to the respective input of the operational amplifier without said current flowing through the second node.