公开(公告)号：US20200169221A1

公开(公告)日：2020-05-28

申请号：US16200975

申请日：2018-11-27

Applicant: STMicroelectronics Asia Pacific Pte Ltd

Inventor： Li CAI ,  Yannick GUEDON ,  Hugo GICQUEL

IPC: H03B5/04 ,  G01R23/15

Abstract: An oscillator circuit includes a first current generator circuit that generates a current complementary to absolute temperature and a second current generator that generates a current proportional to absolute temperature. A temperature slope control circuit adjusts slopes of the current complementary to absolute temperature and the current proportional to absolute temperature in a complementary fashion and adds the current complementary to absolute temperature to the current proportional to absolute temperature after slope control to produce a temperature independent current. A current control circuit adjusts magnitude of the temperature independent current to produce a magnitude adjusted temperature independent current. A current controlled oscillator generates an output signal as a function of the magnitude adjusted temperature independent current.