公开(公告)号：US20210004031A1

公开(公告)日：2021-01-07

申请号：US16459169

申请日：2019-07-01

Applicant: STMicroelectronics S.r.I.

Inventor： Marco Orazio Cavallaro ,  Germano Nicollini ,  Giuseppe Palmisano

IPC: G05F1/46 ,  G05F1/575 ,  G05F1/59

Abstract: A voltage reference circuit includes a first circuit block configured to generate a proportional to absolute temperature current, the first circuit block comprising a current mirror amplifier, a second circuit block coupled to the first circuit block and configured to generated a complimentary to absolute temperature current, and a third circuit block coupled to both the first circuit block and the second circuit block. The second circuit block includes a multi-stage common-source amplifier. The third circuit block is configured to combine the proportional to absolute temperature current and the complimentary to absolute temperature current to generate a reference voltage at an output of the voltage reference circuit.