发明名称 |
Autoranging phase-lock-loop circuit |
摘要 |
An autoranging phase-lock-loop circuit compares an oscillator signal output from a range programmable voltage controlled oscillator, which generates the oscillator frequency within one of a plurality of operating ranges, to a reference signal and commands the voltage controlled oscillator to step to a next operating range if the voltage controlled oscillator cannot lock onto the reference signal within a prescribed time.
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申请公布号 |
US5331292(A) |
申请公布日期 |
1994.07.19 |
申请号 |
US19920915085 |
申请日期 |
1992.07.16 |
申请人 |
NATIONAL SEMICONDUCTOR CORPORATION |
发明人 |
WORDEN, DENNIS R.;BROWN, MICHAEL A. |
分类号 |
H03K3/0231;H03L1/02;H03L7/099;H03L7/10;(IPC1-7):H03L7/18 |
主分类号 |
H03K3/0231 |
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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