Invention Grant
- Patent Title: High performance class AB operational amplifier
- Patent Title (中): 高性能AB类运算放大器
-
Application No.: US13562071Application Date: 2012-07-30
-
Publication No.: US08773202B2Publication Date: 2014-07-08
- Inventor: MarcoOrazio Cavallaro , Serge Ramet , Tiziano Chiarillo
- Applicant: MarcoOrazio Cavallaro , Serge Ramet , Tiziano Chiarillo
- Applicant Address: FR Grenoble IT Agrate Brianza (MB)
- Assignee: STMicroelectronics (Grenoble 2) SAS,STMicroelectronics s.r.l.
- Current Assignee: STMicroelectronics (Grenoble 2) SAS,STMicroelectronics s.r.l.
- Current Assignee Address: FR Grenoble IT Agrate Brianza (MB)
- Agency: Hogan Lovells US LLP
- Priority: ITM12011A1832 20111007
- Main IPC: H03F3/45
- IPC: H03F3/45
Abstract:
A class AB operational amplifier includes an input stage, an output stage and a level shifter stage to control the quiescent current of the output stage and to transfer the signal from the input stage to the output stage, and a control circuit of the level shifter stage. The control circuit includes a transistor differential pair having a differential input terminals and the differential voltage at the differential terminals of the differential pair controls the level shifter stage.
Public/Granted literature
- US20130088298A1 HIGH PERFORMANCE CLASS AB OPERATIONAL AMPLIFIER Public/Granted day:2013-04-11
Information query
