Invention Grant
US07990217B2 Input system for a variable gain amplifier having class-AB transconductance stages
有权
具有AB类跨导级的可变增益放大器的输入系统
- Patent Title: Input system for a variable gain amplifier having class-AB transconductance stages
- Patent Title (中): 具有AB类跨导级的可变增益放大器的输入系统
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Application No.: US12353698Application Date: 2009-01-14
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Publication No.: US07990217B2Publication Date: 2011-08-02
- Inventor: Barrie Gilbert , Todd C. Weigandt , Eberhard Brunner
- Applicant: Barrie Gilbert , Todd C. Weigandt , Eberhard Brunner
- Applicant Address: US MA Norwood
- Assignee: Analog Devices, Inc.
- Current Assignee: Analog Devices, Inc.
- Current Assignee Address: US MA Norwood
- Agency: Marger Johnson & McCollom PC
- Main IPC: H03F3/45
- IPC: H03F3/45
Abstract:
A variable gain amplifier includes an attenuator having a plurality of pairs of tap points, and a plurality of pairs of gm cells, wherein each pair of gm cells is coupled to a corresponding pair of the tap points, and each pair of gm cells is constructed and arranged to operate as a multi-tanh cell.
Public/Granted literature
- US20100007418A1 INPUT SYSTEM FOR A VARIABLE GAIN AMPLIFIER HAVING CLASS-AB TRANSCONDUCTANCE STAGES Public/Granted day:2010-01-14
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