发明授权
- 专利标题： Techniques for canceling offsets in differential circuits
- 专利标题（中）： 差分电路消除偏移的技术
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申请号： US12365585申请日： 2009-02-04
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公开(公告)号： US07863941B1公开(公告)日： 2011-01-04
- 发明人: Toan Thanh Nguyen , Thungoc M. Tran , Sergey Shumarayev
- 申请人： Toan Thanh Nguyen , Thungoc M. Tran , Sergey Shumarayev
- 申请人地址： US CA San Jose
- 专利权人： Altera Corporation
- 当前专利权人： Altera Corporation
- 当前专利权人地址： US CA San Jose
- 代理商 Steven J. Cahill
- 主分类号： H03K5/22
- IPC分类号： H03K5/22
摘要：
A circuit includes a differential circuit that generates a differential output signal at first and second output nodes. The circuit also includes a first variable capacitor coupled to the first output node of the differential circuit, and a second variable capacitor coupled to the second output node of the differential circuit. A control circuit controls capacitances of the first and the second variable capacitors in response to a measurement of the differential output signal.
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