Invention Grant
- Patent Title: Chopper amplifiers with high pass filter for suppressing chopping ripple
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Application No.: US16124737Application Date: 2018-09-07
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Publication No.: US10673389B2Publication Date: 2020-06-02
- Inventor: Alex R. Sloboda , Gregory L. DiSanto , Andrew K. Roberts
- Applicant: Linear Technology Holding LLC
- Applicant Address: US MA Norwood
- Assignee: Linear Technology Holding LLC
- Current Assignee: Linear Technology Holding LLC
- Current Assignee Address: US MA Norwood
- Agency: Knobbe, Martens, Olson & Bear, LLP
- Main IPC: H03F1/02
- IPC: H03F1/02 ; H03F1/26 ; H03F3/45 ; H03F3/387

Abstract:
Chopper amplifiers with high pass filters for suppressing chopping ripple are provided herein. In certain embodiments, a chopper amplifier includes an input chopping circuit, an amplification circuit, a low frequency content detection circuit, and an output chopping circuit electrically connected in a cascade. The low frequency content detection circuit operates in combination with a transconductance or other gain circuit as a high pass filter that filters input offset voltage and/or low frequency noise of the amplification circuit, thereby suppressing output chopping ripple from arising.
Public/Granted literature
- US20190158034A1 CHOPPER AMPLIFIERS WITH HIGH PASS FILTER FOR SUPPRESSING CHOPPING RIPPLE Public/Granted day:2019-05-23
Information query
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