Invention Grant
- Patent Title: DC offset canceller
- Patent Title (中): 直流偏移消除器
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Application No.: US14574052Application Date: 2014-12-17
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Publication No.: US09203364B2Publication Date: 2015-12-01
- Inventor: Takayuki Abe , Koji Imamura , Kazutoshi Satou , Shigeki Nakamura
- Applicant: Panasonic Corporation
- Applicant Address: JP Osaka
- Assignee: PANASONIC CORPORATION
- Current Assignee: PANASONIC CORPORATION
- Current Assignee Address: JP Osaka
- Agency: Greenblum & Bernstein, P.L.C.
- Priority: JP2013-267110 20131225; JP2014-241080 20141128
- Main IPC: H03F3/45
- IPC: H03F3/45 ; H03F1/02
Abstract:
Two LPFs are disposed on the output side of a differential amplifier to remove an AC component contained in an output signal output from a first output terminal of the differential amplifier and an AC component contained in an output signal output from a second output terminal of the differential amplifier. The lowpass filter voltage of the output signal output from the first output terminal with the AC component removed is input to one of input terminals of one of two comparators, and the lowpass filter voltage of the output signal output from the second output terminal with the AC component removed is input to one of input terminals of the other comparator.
Public/Granted literature
- US20150180431A1 DC OFFSET CANCELLER Public/Granted day:2015-06-25
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