发明公开
- 专利标题: System and method for a programmable gain amplifier
- 专利标题(中): 系统和方法,用于可编程放大器
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申请号: EP03001574.7申请日: 2003-01-23
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公开(公告)号: EP1331732A3公开(公告)日: 2005-02-16
- 发明人: Sobel, David A.
- 申请人: Broadcom Corporation
- 申请人地址: 16215 Alton Parkway Irvine, California 92618-7013 US
- 专利权人: Broadcom Corporation
- 当前专利权人: Broadcom Corporation
- 当前专利权人地址: 16215 Alton Parkway Irvine, California 92618-7013 US
- 代理机构: Jehle, Volker Armin, Dipl.-Ing.
- 优先权: US350035P 20020123; US208042 20020731
- 主分类号: H03G3/00
- IPC分类号: H03G3/00
摘要:
Provided is system for an improved programmable gain amplifier (PGA). The system includes an amplifier and a first gain control mechanism. The first gain control mechanism includes a circuit input port and is positioned along a feedback path of the amplifier. The first gain control mechanism is configured to (i) receive an input signal and (ii) moderate gains applied to the received input signal, the applied gains including gain values of greater than or equal to one. A second gain control mechanism is coupled to the first gain control mechanism and is integrated with a function of the amplifier. The second gain control mechanism (i) provides gain values of less than one and (ii) decreases a feedback factor of the amplifier when the gain values are provided having values of less than one.
公开/授权文献
- EP1331732B1 System and method for a programmable gain amplifier 公开/授权日:2009-03-25
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