| 发明名称 |
SPREAD SPECTRUM CONTROL PLL CIRCUIT AND ITS START-UP METHOD |
| 摘要 |
A calibration circuit (19) adjusts at least one of one of a charging current of a charge pump circuit (12) and a capacitance value of a filter capacitor in a loop filter circuit (13) and a gain of a voltage controlled oscillator (14), depending on a frequency of a reference clock signal input to a calibration circuit (10).
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| 申请公布号 |
US2010127739(A1) |
申请公布日期 |
2010.05.27 |
| 申请号 |
US20080595008 |
申请日期 |
2008.03.18 |
| 申请人 |
EBUCHI TSUYOSHI;KOMATSU YOSHIHIDE;YAMAMOTO MICHIYO |
发明人 |
EBUCHI TSUYOSHI;KOMATSU YOSHIHIDE;YAMAMOTO MICHIYO |
| 分类号 |
H03L7/08 |
主分类号 |
H03L7/08 |
| 代理机构 |
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代理人 |
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| 主权项 |
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