发明授权
- 专利标题： Method and apparatus for controlling common-mode output voltage in fully differential amplifiers
- 专利标题（中）： 用于控制全差分放大器中共模输出电压的方法和装置
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申请号： US10710745申请日： 2004-07-30
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公开(公告)号： US07053712B2公开(公告)日： 2006-05-30
- 发明人: Anthony R. Bonaccio , Hayden C. Cranford, Jr. , Michael A. Sorna , Sebastian T. Ventrone
- 申请人： Anthony R. Bonaccio , Hayden C. Cranford, Jr. , Michael A. Sorna , Sebastian T. Ventrone
- 申请人地址： US NY Armonk
- 专利权人： International Business Machines Corporation
- 当前专利权人： International Business Machines Corporation
- 当前专利权人地址： US NY Armonk
- 代理机构： Cantor Colburn LLP
- 代理商 Michael J. LeStrange
- 主分类号： H03F3/45
- IPC分类号： H03F3/45
摘要：
A method for controlling the common-mode output voltage in a fully differential amplifier includes comparing a sensed common-mode output voltage of the fully differential amplifier to a reference voltage, and generating an error signal representing the difference between the sensed common-mode output voltage and the reference voltage. The error signal is utilized to control the body voltage of one or more FET devices included within the fully differential amplifier until the sensed common-mode output voltage is in agreement with said reference voltage.
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