发明授权
- 专利标题： Linear-in-decibel variable gain amplifier
- 专利标题（中）： 线性分贝可变增益放大器
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申请号： US10709198申请日： 2004-04-20
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公开(公告)号： US07075368B2公开(公告)日： 2006-07-11
- 发明人: Ying-Yao Lin , Tung-Ming Su , Chao-Cheng Lee
- 申请人： Ying-Yao Lin , Tung-Ming Su , Chao-Cheng Lee
- 申请人地址： TW HsinChu
- 专利权人： Realtek Semiconductor Corp.
- 当前专利权人： Realtek Semiconductor Corp.
- 当前专利权人地址： TW HsinChu
- 代理商 Winston Hsu
- 优先权： TW92124135A 20030901
- 主分类号： H03F3/45
- IPC分类号： H03F3/45
摘要：
A variable gain amplifier having a linear decibel-scale gain comprises an amplifying stage for generating an output voltage according to a differential input voltage, and a gain-controlling stage for outputting a gain-controlling voltage to the amplifying stage according to a first controlling voltage and a second controlling voltage. A voltage gain of the variable gain amplifier is inversely proportional to a simple exponential function, and the value of the simple exponential function is determined by the difference between the first controlling voltage and the second controlling voltage.
公开/授权文献
- US20050046479A1 LINEAR-IN-DECIBEL VARIABLE GAIN AMPLIFIER 公开/授权日：2005-03-03
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