发明名称 |
PRECISE PHASE START-UP VOLTAGE CONTROLLED OSCILLATOR WITH ACCURATE DUTY CYCLE |
摘要 |
E PHASE START-UP VOLTAGE CONTROLLED OSCILLATOR WITH ACCURATE DUTY CYCLE A voltage controlled oscillator includes an inverting amplifier connected to a resonant feedback network and a comparator for comparing the input to the inverting amplifier to a reference voltage which is equal to the threshold voltage of the inverting amplifier. As a result, the oscillator provides a square wave output having a precise one-to-one duty cycle. In addition, circuitry is included for causing the oscillator to start up at a steady state value and predetermined phase. |
申请公布号 |
CA1286372(C) |
申请公布日期 |
1991.07.16 |
申请号 |
CA19870539512 |
申请日期 |
1987.06.12 |
申请人 |
WESTERN DIGITAL CORPORATION |
发明人 |
LOFGREN, KARL M. J.;SHEARER, GERALD W.;OUYANG, KENNETH W. |
分类号 |
H03K12/00;H03B5/12;H03B5/24;H03K3/0231;H03K3/353;H03K3/354;H03L3/00;H03L7/099 |
主分类号 |
H03K12/00 |
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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