发明名称 |
DC OFFSET CALIBRATION APPARATUS, DC OFFSET CALIBRATION SYSTEM, AND METHOD THEREOF |
摘要 |
A DC offset calibration apparatus including a signal processing unit, a comparison unit, a first resistor array, a second resistor array, and a resistor array control unit is provided. The signal processing unit receives an input differential signal and generates an output differential signal. The comparison unit detects and determines a first DC output voltage and a second DC output voltage of the output differential signal and generates a DC offset signal. First ends of the first resistor array and the second resistor array are respectively coupled to a first input terminal and a second input terminal of the signal processing unit. The resistor array control unit adjusts resistances of the first and the second resistor array according to the DC offset signal and a bit code sequence until the DC offset signal enters a transient state, so as to calibrate a DC offset voltage in the output differential signal. |
申请公布号 |
US2012044006(A1) |
申请公布日期 |
2012.02.23 |
申请号 |
US20100886550 |
申请日期 |
2010.09.20 |
申请人 |
KAO SHIAU-WEN;PENG JIA-HUNG;KUO MING-CHING;INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE |
发明人 |
KAO SHIAU-WEN;PENG JIA-HUNG;KUO MING-CHING |
分类号 |
H03L5/00 |
主分类号 |
H03L5/00 |
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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