发明名称 |
Charge pump system for fast locking phase lock loop |
摘要 |
A charge pump system for a fast locking phase lock loop includes a set n of charge pump units; and a control logic circuit for enabling the set of n charge pump units to produce up and down charge pulses with a nominal charge pump mismatch in a wide bandwidth mode; and in a narrow bandwidth mode enabling at least a subset of the n charge pump units sequentially to produce an average charge pump mismatch in narrow bandwidth mode that matches the nominal charge pump mismatch in the wide bandwidth mode.
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申请公布号 |
US6897690(B2) |
申请公布日期 |
2005.05.24 |
申请号 |
US20040874641 |
申请日期 |
2004.06.23 |
申请人 |
ANALOG DEVICES, INC. |
发明人 |
KEAVENEY MICHAEL F.;LYDEN COLIN;WALSH PATRICK |
分类号 |
F04B;H02M;H03D13/00;H03K3/017;H03K3/0231;H03L;H03L7/00;H03L7/06;H04B;(IPC1-7):H03L7/06 |
主分类号 |
F04B |
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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