发明授权
US07456648B2 Differential amplifiers using asymmetric transfer characteristics to suppress input noise in output logic signals
有权
使用非对称传输特性的差分放大器抑制输出逻辑信号中的输入噪声
- 专利标题： Differential amplifiers using asymmetric transfer characteristics to suppress input noise in output logic signals
- 专利标题（中）： 使用非对称传输特性的差分放大器抑制输出逻辑信号中的输入噪声
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申请号： US11330047申请日： 2006-01-10
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公开(公告)号： US07456648B2公开(公告)日： 2008-11-25
- 发明人: Gyudong Kim , Min-Kyu Kim
- 申请人： Gyudong Kim , Min-Kyu Kim
- 申请人地址： US CA Sunnyvale
- 专利权人： Silicon Image Inc.
- 当前专利权人： Silicon Image Inc.
- 当前专利权人地址： US CA Sunnyvale
- 代理机构： Perkins Coie LLP
- 主分类号： H03K17/16
- IPC分类号： H03K17/16
摘要：
An output amplifier is provided for use in a bidirectional communications interface, for example, connecting a transmitter and a receiver to a transmission line. The output amplifier includes a differential amplifier pair connected to output circuitry. The differential amplifier pair receives differential data signal pairs from each of a transmission line and a transmitter. The output circuitry receives signals from the differential amplifier pair and, in response, forms single-ended output logic signals. The output amplifier suppresses electronic input noise throughput using an asymmetric transfer characteristic that offsets output signal logic levels with respect to input noise signal levels. The asymmetric transfer characteristic is produced by skewing a transfer characteristic of the differential amplifier pair using an asymmetrical transistor configuration at an output side of the differential amplifier pair. The output logic signals represent data received on the transmission line, and are provided to the receiver.
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