Invention Grant
US09270232B2 Amplifier apparatus and methods using variable capacitance dependent on feedback gain
有权
使用可变电容的放大器装置和方法取决于反馈增益
- Patent Title: Amplifier apparatus and methods using variable capacitance dependent on feedback gain
- Patent Title (中): 使用可变电容的放大器装置和方法取决于反馈增益
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Application No.: US13618156Application Date: 2012-09-14
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Publication No.: US09270232B2Publication Date: 2016-02-23
- Inventor: Yu Jin Park , Soon Hwa Kang , Min Ho Kwon , Jae Hong Kim , Kwi Sung Yoo , Seung Hyun Lim
- Applicant: Yu Jin Park , Soon Hwa Kang , Min Ho Kwon , Jae Hong Kim , Kwi Sung Yoo , Seung Hyun Lim
- Applicant Address: KR
- Assignee: Samsung Electronics Co., Ltd.
- Current Assignee: Samsung Electronics Co., Ltd.
- Current Assignee Address: KR
- Agency: Myers Bigel & Sibley, P.A.
- Priority: KR10-2011-0126262 20111129
- Main IPC: H04N5/335
- IPC: H04N5/335 ; H03F1/34 ; H03F1/08 ; H03F3/45 ; G11C27/02
Abstract:
An apparatus includes an operational amplifier circuit comprising at least one operational amplifier and a feedback circuit coupled between the output terminal and input terminal of the operational amplifier circuit and configured to apply a feedback gain to an output signal at the output of the first operational amplifier. The apparatus further includes a variable compensation capacitor coupled to the output terminal of the operational amplifier circuit and configured to vary a capacitance thereof responsive to the feedback gain.
Public/Granted literature
- US20130135503A1 AMPLIFIER APPARATUS AND METHODS USING VARIABLE CAPACITANCE DEPENDENT ON FEEDBACK GAIN Public/Granted day:2013-05-30
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