发明名称 |
APPARATUS AND METHOD FOR GAIN CALIBRATION TECHNIQUE FOR ANALOG-TO-DIGITAL CONVERTER |
摘要 |
A method and apparatus for performing gain calibration of an analog to digital converter is provided. During a calibration mode, an input sampling circuit comprised of multiple branches can be configured to provide a calibration mode gain of one. The analog-to-digital converter selects one of the parallel capacitor input sampling branches and repetitively samples the whole charge associated with the calibration voltage signal. This sampling step is repeated for each input sampling branch that is used during normal operation mode. The results of the sampling of the branches may be suitably averaged to create a gain calibration coefficient that is representative of and accounts for sampling variations between the input branches.
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申请公布号 |
US2003025622(A1) |
申请公布日期 |
2003.02.06 |
申请号 |
US20010045240 |
申请日期 |
2001.10.19 |
申请人 |
TODSEN JAMES L.;WANG BINAN |
发明人 |
TODSEN JAMES L.;WANG BINAN |
分类号 |
H03M3/00;(IPC1-7):H03M1/10 |
主分类号 |
H03M3/00 |
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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