发明名称 |
WIDE-LOCKING RANGE PHASE LOCKED LOOP CIRCUIT USING ADAPTIVE POST DIVISION TECHNIQUE |
摘要 |
A wide-locking range phase locked loop circuit includes a decision unit and a closed loop connection comprising a phase frequency detector, a charge pump, a loop filter, a voltage controlled oscillator, and a multi-modulus divider. The decision unit receives a phase difference signal outputted from phase frequency detector and the control voltage outputted from the loop filter and determines to select a specific divisor form the plurality of divisors provided by the multi-modulus divider if the phase difference signal indicates an unlocked state and the control voltage is not within a standard voltage operation range.
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申请公布号 |
US2008174349(A1) |
申请公布日期 |
2008.07.24 |
申请号 |
US20080016335 |
申请日期 |
2008.01.18 |
申请人 |
FARADAY TECHNOLOGY CORPORATION |
发明人 |
LUO REN-HONG;WEI CHENG-TA |
分类号 |
H03L7/095;H03L7/08;H03L7/085 |
主分类号 |
H03L7/095 |
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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