发明名称 |
PLL-controlled oscillator |
摘要 |
A PLL (Phase-Locked Loop)-controlled oscillator has a temperature-compensated crystal oscillator having a quartz crystal unit, an oscillating circuit connected to the crystal unit, and a temperature compensating mechanism for generating a temperature compensating voltage for compensating for frequency vs. temperature characteristics of the crystal unit, and a voltage-controlled oscillator having an LC oscillating circuit, for being controlled by a PLL using the temperature-compensated crystal oscillator as a reference signal source. The temperature-compensated crystal oscillator has circuit components except for the crystal unit, the circuit components and the voltage-controlled oscillator being integrated in a one-chip IC. The one-chip IC and the crystal unit are integrally combined with each other in the PLL-controlled oscillator.
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申请公布号 |
US6870430(B2) |
申请公布日期 |
2005.03.22 |
申请号 |
US20030456897 |
申请日期 |
2003.06.06 |
申请人 |
NIHON DEMPA KOGYO CO., LTD. |
发明人 |
NAKAMURA AKIHIRO;AKAIKE KAZUO;ONO KOZO;ISHII TAKAAKI |
分类号 |
H03B5/32;H03B5/04;H03B5/36;H03L7/099;(IPC1-7):H03L1/02 |
主分类号 |
H03B5/32 |
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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