发明名称 |
Low voltage differential amplifier circuit for wide voltage range operation |
摘要 |
A differential amplifier design and bias control technique of particular applicability for low voltage operation in which the threshold voltage of n-channel differential input transistors is controlled using substrate bias in order to allow a wider range of input signal levels. Further disclosed is a technique for controlling the substrate bias of the input transistors of a differential amplifier based on the level of the output of the amplifier in addition to a differential amplifier circuit capable of low voltage operation in which an additional bias current is introduced that enables the output pull-up current to be increased without increasing the pull-down current, as well as circuitry for optimizing the performance of the differential in both DDR-I and DDR-II operational modes.
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申请公布号 |
US2005275461(A1) |
申请公布日期 |
2005.12.15 |
申请号 |
US20040868145 |
申请日期 |
2004.06.15 |
申请人 |
HEIGHTLEY JOHN D;FAUE JON A |
发明人 |
HEIGHTLEY JOHN D.;FAUE JON A. |
分类号 |
H03F1/30;H03F3/45;(IPC1-7):H03F3/45 |
主分类号 |
H03F1/30 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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