发明名称 |
Offset cancellation for differential amplifiers |
摘要 |
A differential amplifier with improved offset cancellation is disclosed. The differential amplifier has a floating current source coupled to the drain terminals of the differential pair for providing complementary currents to cancel the offset voltage. In this way, the tail current in the differential pair is not affected by the offset cancellation and remains constant, while the common-mode offset is not worsened by the injected current.
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申请公布号 |
US5631603(A) |
申请公布日期 |
1997.05.20 |
申请号 |
US19950536331 |
申请日期 |
1995.09.29 |
申请人 |
ROCKWELL INTERNATIONAL CORPORATION |
发明人 |
STUBBE, FREDERIC M.;MACROBBIE, EDWARD W.;SHAMLOU, DARYUSH |
分类号 |
G01R19/00;H03F1/30;H03F3/45;(IPC1-7):H03F3/45 |
主分类号 |
G01R19/00 |
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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