发明名称 |
SWITCHED CAPACITANCE VOLTAGE DIFFERENTIAL SENSING CIRCUIT WITH NEAR INFINITE INPUT IMPEDANCE |
摘要 |
A circuit may sense the differential voltage across two nodes that each have a non-zero common mode voltage. The circuit may have a positive input impedance that is imposed across the nodes. An impedance compensation circuit may generate a compensation current that is delivered to the nodes that substantially cancels the loading effect of the positive input impedance. The impedance compensation circuit may generate a negative input impedance that is imposed across the two nodes that is substantially the same as the positive input impedance. The impedance compensation circuit may instead be configured to deliver the compensation current to the nodes.
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申请公布号 |
US2012274360(A1) |
申请公布日期 |
2012.11.01 |
申请号 |
US201213457320 |
申请日期 |
2012.04.26 |
申请人 |
KULTGEN MICHAEL ALFRED;HUTCHINSON DAVID;LINEAR TECHNOLOGY CORPORATION |
发明人 |
KULTGEN MICHAEL ALFRED;HUTCHINSON DAVID |
分类号 |
H03K5/22 |
主分类号 |
H03K5/22 |
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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