Invention Grant
- Patent Title: High performance class AB operational amplifier
- Patent Title (中): 高性能AB类运算放大器
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Application No.: US14304589Application Date: 2014-06-13
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Publication No.: US09231540B2Publication Date: 2016-01-05
- Inventor: MarcoOrazio Cavallaro , Serge Ramet , Tiziano Chiarillo
- Applicant: STMicroelectronics (Grenoble 2) SAS , STMicroelectronics, S.r.l.
- 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: Allen, Dyer, Doppelt, Milbrath & Gilchrist, P.A.
- Priority: ITM12011A001832 20111007
- Main IPC: H03F3/45
- IPC: H03F3/45 ; H03F1/30 ; H03F3/30
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
- US20140292411A1 HIGH PERFORMANCE CLASS AB OPERATIONAL AMPLIFIER Public/Granted day:2014-10-02
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