发明名称 |
Method and system for minimizing differential amplifier power supply sensitivity |
摘要 |
The invention includes an apparatus and a method for minimizing power supply sensitivity of a differential amplifier. The apparatus includes a current source providing a differential amplifier bias current to a common source node of the differential amplifier. A voltage sensor senses variations of a power supply associated with the current source. Variations sensed by the voltage sensor control a magnitude of the differential amplifier bias current. The method includes a current source providing the source current. A voltage potential of the common source node is sensed. The current source is adjusted depending upon the sensed voltage potential of the common source node, thereby adjusting a magnitude of the source current.
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申请公布号 |
US6879534(B2) |
申请公布日期 |
2005.04.12 |
申请号 |
US20020286577 |
申请日期 |
2002.11.01 |
申请人 |
HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P. |
发明人 |
PERNER FREDERICK;SMITH KENNETH |
分类号 |
G05F3/20;H03F3/45;(IPC1-7):G11C7/02;G11C7/00;H02M11/00;G06G7/18 |
主分类号 |
G05F3/20 |
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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