发明名称 SYSTEM AND METHOD FOR CRYSTAL OSCILLATOR FREQUENCY TUNING
摘要 An oscillator may include a crystal resonator, an inverter coupled in parallel with the crystal resonator, a first switched capacitor coupled to a first terminal of the crystal resonator, a second switched capacitor coupled to a second terminal of the crystal resonator, a control module configured to output a periodic dithering signal, the periodic dithering signal having a first pulse width based on a desired frequency of oscillation for the oscillator, and a delay module configured to communicate a first periodic enable signal to enable the first switched capacitor and a second periodic enable signal to enable the second switched capacitor. At least one of the first periodic enable signal and the second periodic enable signal may have a second pulse width greater than the first pulse width. The second periodic enable signal may be phase delayed relative to the first periodic enable signal by a non-zero delay.
申请公布号 US2012063504(A1) 申请公布日期 2012.03.15
申请号 US20100879525 申请日期 2010.09.10
申请人 SIMMONS JOHN;KAUFMAN KRISTOPHER 发明人 SIMMONS JOHN;KAUFMAN KRISTOPHER
分类号 H03K7/08;H03K3/017;H03L7/00 主分类号 H03K7/08
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