Invention Grant
- Patent Title: Variable gain amplifier circuit
- Patent Title (中): 可变增益放大电路
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Application No.: US12909763Application Date: 2010-10-21
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Publication No.: US08279002B2Publication Date: 2012-10-02
- Inventor: Takahiro Kawashima , Rui Kurihara
- Applicant: Takahiro Kawashima , Rui Kurihara
- Applicant Address: JP Moriguchi-shi, Osaka JP Ora-Gun, Gunma
- Assignee: Sanyo Electric Co., Ltd.,Sanyo Semiconductor Co., Ltd.
- Current Assignee: Sanyo Electric Co., Ltd.,Sanyo Semiconductor Co., Ltd.
- Current Assignee Address: JP Moriguchi-shi, Osaka JP Ora-Gun, Gunma
- Agency: Osha Liang LLP
- Priority: JP2009-242711 20091021
- Main IPC: H03G3/20
- IPC: H03G3/20
Abstract:
A variable gain amplifier circuit includes: an operational amplifier having a non-inverting input terminal applied with a predetermined voltage; a feedback resistor having one end connected to an inverting input terminal of the operational amplifier and the other end connected to an output terminal of the operational amplifier; and a variable resistor having one end applied with an input voltage and the other end connected to the inverting input terminal of the operational amplifier.
Public/Granted literature
- US20110260789A1 VARIABLE GAIN AMPLIFIER CIRCUIT Public/Granted day:2011-10-27
Information query
