Invention Grant
US07532065B2 Analog amplifier having DC offset cancellation circuit and method of offset cancellation for analog amplifiers
有权
具有DC偏移消除电路的模拟放大器和模拟放大器的偏移消除方法
- Patent Title: Analog amplifier having DC offset cancellation circuit and method of offset cancellation for analog amplifiers
- Patent Title (中): 具有DC偏移消除电路的模拟放大器和模拟放大器的偏移消除方法
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Application No.: US11420177Application Date: 2006-05-24
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Publication No.: US07532065B2Publication Date: 2009-05-12
- Inventor: Jinghong Chen , Gregory W. Sheets , Joseph Anidjar , Robert J. Kapuschinsky , Lane A. Smith
- Applicant: Jinghong Chen , Gregory W. Sheets , Joseph Anidjar , Robert J. Kapuschinsky , Lane A. Smith
- Applicant Address: US PA Allentown
- Assignee: Agere Systems Inc.
- Current Assignee: Agere Systems Inc.
- Current Assignee Address: US PA Allentown
- Agency: Mendelsohn & Assoc., P.C.
- Agent Kevin M. Drucker; Steve Mendelsohn
- Main IPC: H03F1/02
- IPC: H03F1/02
Abstract:
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
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