Invention Grant
- Patent Title: Modulator feedforward compensation
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Application No.: US17739480Application Date: 2022-05-09
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Publication No.: US11979115B2Publication Date: 2024-05-07
- Inventor: Siddharth Maru , Chandra B. Prakash , Tejasvi Das
- Applicant: Cirrus Logic International Semiconductor Ltd.
- Applicant Address: GB Edinburgh
- Assignee: Cirrus Logic Inc.
- Current Assignee: Cirrus Logic Inc.
- Current Assignee Address: US TX Austin
- Agency: Jackson Walker L.L.P.
- Main IPC: H03F3/04
- IPC: H03F3/04 ; B06B1/02

Abstract:
An amplifier system may include a first feedback loop coupled between an output of an amplifier to an input of a modulator for regulating an output voltage driven at the output of the amplifier to a first terminal of a load of the amplifier system, a sense resistor for sensing a physical quantity associated with the amplifier, a second control loop coupled to the sense resistor such that the sense resistor is outside of the second control loop, the second control loop configured to regulate a common-mode voltage at a second terminal of the load, and a common-mode feedforward circuit coupled to the sense resistor and configured to minimize effects of a signal-dependent common-mode feedback of the sense resistor.
Public/Granted literature
- US20230170854A1 MODULATOR FEEDFORWARD COMPENSATION Public/Granted day:2023-06-01
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