发明申请
US20090212856A1 ANALOG AMPLIFIER HAVING DC OFFSET CANCELLATION CIRCUIT AND METHOD OF OFFSET CANCELLATION FOR ANALOG AMPLIFIERS
有权
具有直流偏移消除电路的模拟放大器和模拟放大器偏移消除方法
- 专利标题： ANALOG AMPLIFIER HAVING DC OFFSET CANCELLATION CIRCUIT AND METHOD OF OFFSET CANCELLATION FOR ANALOG AMPLIFIERS
- 专利标题（中）： 具有直流偏移消除电路的模拟放大器和模拟放大器偏移消除方法
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申请号： US12437860申请日： 2009-05-08
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公开(公告)号： US20090212856A1公开(公告)日： 2009-08-27
- 发明人: Jinghong Chen , Gregory W. Sheets , Joseph Anidjar , Robert J. Kapuschinsky , Lane A. Smith
- 申请人： Jinghong Chen , Gregory W. Sheets , Joseph Anidjar , Robert J. Kapuschinsky , Lane A. Smith
- 申请人地址： US PA Allentown
- 专利权人： AGERE SYSTEMS INC.
- 当前专利权人： AGERE SYSTEMS INC.
- 当前专利权人地址： US PA Allentown
- 主分类号： H03F1/02
- IPC分类号： H03F1/02
摘要：
An amplifier having DC offset compensation includes at least one input node and a pair of differential output nodes, a biasing circuit coupled to the input node; and a plurality of current sources. Selected ones of said current sources are coupled to the input node to adjust a DC voltage at the input node to provide DC offset compensation for the amplifier