Patent ID: 8736354
Filing Date: 2014-05-27
Classification: G05F

Abstract:
1. An electronic device having a bandgap reference voltage generation stage comprising: a device with a PN-junction; a current source operable to supply a current of a first magnitude during a first period of time and a current of a second magnitude during a second period of time through the PN-junction; and an output stage generating a voltage as the bandgap reference voltage from a combination of a first voltage drop across the PN-junction during the first period of time and a second voltage drop across the PN-junction during the second period of time, the output stage including a capacitor voltage divider having a first switch having a first terminal connected to the second terminal of the second capacitor and a second terminal connected to a second terminal of the PN-junction, the first switch controlled to conduct during the first period of time and not conduct during the second period of time.