发明名称 |
CHARGE PUMP FOR A LOW-VOLTAGE WIDE-TUNING RANGE PHASE-LOCKED LOOP |
摘要 |
A charge pump for a differential phase-locked loop (PLL) is provided. The charge pump includes a current switch configured to voltage to source and sink a current in a complementary fashion from a pair of differential output nodes. The charge pump includes a common-mode feedback loop to maintain the charging and discharging of the differential output nodes with respect to a common-mode voltage. Transconductance amplifiers are provided within the common-mode feedback loop to provide greater dynamic range to the charging and discharging of the differential output nodes. |
申请公布号 |
WO2005099094(A3) |
申请公布日期 |
2006.03.23 |
申请号 |
WO2005US10949 |
申请日期 |
2005.03.31 |
申请人 |
LATTICE SEMICONDUCTOR CORPORATION |
发明人 |
ZHU, XIANG;QU, MING;GE, YONGMIN |
分类号 |
H03L7/00;H03L7/089;H03L7/18 |
主分类号 |
H03L7/00 |
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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