Invention Grant
US09484872B1 Amplifier circuit with static consumption control and corresponding control method
有权
放大器电路具有静态消耗控制和相应的控制方式
- Patent Title: Amplifier circuit with static consumption control and corresponding control method
- Patent Title (中): 放大器电路具有静态消耗控制和相应的控制方式
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Application No.: US14969042Application Date: 2015-12-15
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Publication No.: US09484872B1Publication Date: 2016-11-01
- Inventor: Antonino Conte , Alberto Jose' Di Martino
- Applicant: STMICROELECTRONICS S.R.L.
- Applicant Address: IT Agrate Brianza (MB)
- Assignee: STMICROELECTRONICS S.R.L.
- Current Assignee: STMICROELECTRONICS S.R.L.
- Current Assignee Address: IT Agrate Brianza (MB)
- Agency: Allen, Dyer, Doppelt, Milbrath & Gilchrist, P.A.
- Priority: IT102015000024736 20150617
- Main IPC: H03F3/45
- IPC: H03F3/45 ; H03M1/66 ; G11C16/12 ; G11C5/14

Abstract:
An amplifier circuit may include an input amplification stage comprising a first amplifier having first and second differential inputs and a first output, and a second amplifier having first and second differential inputs and a second output. The amplifier circuit also includes an output amplification stage having first and second inputs respectively coupled to the first and second outputs of the input amplification stage, and an output configured to supply an output voltage based upon the input voltage by an amplification factor. The amplifier circuit comprises a feedback stage with a common-mode control stage configured to implement a comparison between the first differential voltage and the second differential voltage, and a reference voltage, and generate respective regulation currents on the first and second inputs of the output amplification stage to compensate for a common-mode variation of the first differential voltage and the second differential voltage.
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