Invention Grant
- Patent Title: Method and apparatus for gain enhancement of differential amplifier
- Patent Title (中): 差分放大器增益增益的方法和装置
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Application No.: US14472564Application Date: 2014-08-29
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Publication No.: US09385677B2Publication Date: 2016-07-05
- Inventor: Chia-Liang (Leon) Lin
- Applicant: Realtek Semiconductor Corp.
- Applicant Address: TW Hsinchu
- Assignee: REALTEK SEMICONDUCTOR CORP.
- Current Assignee: REALTEK SEMICONDUCTOR CORP.
- Current Assignee Address: TW Hsinchu
- Agency: McClure, Qualey & Rodack, LLP
- Main IPC: H03F3/45
- IPC: H03F3/45 ; H03G3/30 ; H03F1/34

Abstract:
A differential amplifier circuit and method having a feed-in network coupling an input signal to an intermediate signal. An amplifier amplifies the intermediate signal by a gain factor to output an output signal to a load network. A feedback network configured in a negative feedback topology and couples the output signal to the intermediate signal. A gain enhancing network is configured in a positive feedback topology and couples the output signal to the intermediate signal. Preferably, an impedance of the gain enhancing network is approximately equal to an impedance of a parallel connection of the feed-in network and the feedback network times the gain factor minus one.
Public/Granted literature
- US20160065157A1 METHOD AND APPARATUS FOR GAIN ENHANCEMENT OF DIFFERENTIAL AMPLIFIER Public/Granted day:2016-03-03
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