公开(公告)号：US10742197B2

公开(公告)日：2020-08-11

申请号：US16200975

申请日：2018-11-27

Applicant: STMicroelectronics Asia Pacific Pte Ltd

Inventor： Li Cai ,  Yannick Guedon ,  Hugo Gicquel

IPC: H03K3/011 ,  H03K3/03 ,  H03L1/02 ,  G05F3/24

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.