Invention Grant
- Patent Title: Amplifier with auxiliary path for maximizing power supply rejection ratio
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Application No.: US15394168Application Date: 2016-12-29
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Publication No.: US10461709B2Publication Date: 2019-10-29
- Inventor: Bhupendra Singh Manola
- Applicant: Cirrus Logic International Semiconductor Ltd.
- Applicant Address: US TX Austin
- Assignee: Cirrus Logic, Inc.
- Current Assignee: Cirrus Logic, Inc.
- Current Assignee Address: US TX Austin
- Agency: Jackson Walker L.L.P.
- Main IPC: H03F3/45
- IPC: H03F3/45 ; H03F3/185 ; H03F1/26 ; H03F1/02 ; H03F3/21 ; H04R3/02 ; H03F1/14 ; H03F1/30

Abstract:
An amplifier may include a main signal path having a plurality of stages compensated by feedback elements, the plurality of stages comprising an output stage configured to receive electrical energy from a power supply and an auxiliary path independent of the main signal path and comprising an output stage compensation circuit configured to generate a compensation current proportional to noise present in the power supply and apply the compensation current to cancel a power supply-induced current present in at least one of the feedback elements.
Public/Granted literature
- US20180191320A1 AMPLIFIER WITH AUXILIARY PATH FOR MAXIMIZING POWER SUPPLY REJECTION RATIO Public/Granted day:2018-07-05
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