发明名称 |
TEMPERATURE COMPENSATED FREQUENCY ADJUSTMENT IN A METER READING ENDPOINT |
摘要 |
<p>The presently disclosed subject matter is directed to methods and apparatus enabling production of a stable output from a phase locked loop (PLL) circuit. A crystal controlled oscillator provides a reference signal to the PLL circuit. Temperature variations associated with the crystal cause variations in the operating frequency of the crystal that result in variations of the PLL output frequency. The presently disclosed subject matter compensates for such variations in frequency output by modifying an operation of the PLL circuit based on the temperature variations so that the output frequency remains stable even with temperature induced variations in the reference signal.</p> |
申请公布号 |
WO2013066939(A1) |
申请公布日期 |
2013.05.10 |
申请号 |
WO2012US62688 |
申请日期 |
2012.10.31 |
申请人 |
ITRON, INC. |
发明人 |
CORNWALL, MARK, K.;CAHILL-O'BRIEN, BARRY;PAOLINO, JOSEPH |
分类号 |
H03L1/04;H01L35/00;H03L7/06 |
主分类号 |
H03L1/04 |
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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