发明名称 |
Line driver capable of automatically adjusting output impedance |
摘要 |
A line driver includes: a differential amplifier for amplifying an input signal to generate an output signal; first and second series resistors coupled respectively to output terminals of the differential amplifier and through which the output signal is output; first and second negative-feedback resistors each coupled between a respective input terminal and a respective output terminal of the differential amplifier; first and second positive-feedback variable resistors each coupled between a respective input terminal of the differential amplifier and a respective one of the first and second series resistors; and an adjusting unit coupled to the first and second positive-feedback variable resistors to adjust a resistance thereof with reference to the output signal.
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申请公布号 |
US7701284(B2) |
申请公布日期 |
2010.04.20 |
申请号 |
US20080167408 |
申请日期 |
2008.07.03 |
申请人 |
REALTEK SEMICONDUCTOR CORP. |
发明人 |
LIAO SU-LIANG;CHIANG MING-CHENG |
分类号 |
H03F3/45;H03F1/34 |
主分类号 |
H03F3/45 |
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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