09-08-2012 дата публикации
Номер: US20120200364A1
Принадлежит:
An oscillator and a semiconductor integrated circuit device with an internal oscillator capable of compensating the temperature characteristics even when there is a large parasitic capacitance too large to ignore directly between the output terminals of the oscillator. In an oscillator containing an inductance element L, and a capacitive element C, and an amplifier each coupled in parallel across a first and second terminal, the amplifier amplifies the resonance generated by the inductance element and capacitive element and issues an output from the first terminal and the second terminal, and in which a first resistance element with a larger resistance value than the parasitic resistance of the inductance element between the first terminal and the second terminal, is coupled in serial with the capacitive element between the first terminal and the second terminal. 1. An oscillator comprising:an inductive element, a capacitive element, and an amplifier respectively coupled in parallel across a first terminal and a second terminal, and utilizing the amplifier to amplify the resonance generated by the inductance element and the capacitive element, and issuing an output from the first terminal and the second terminal,wherein a first resistance element with a larger resistance value than the parasitic resistance of the inductance element between the first terminal and the second terminal, is coupled in series with a capacitive element between the first terminal and the second terminal.2. The oscillator according to claim 1 ,wherein the first resistance element and the inductance element possess essentially the same temperature coefficient.3. The oscillator according to claim 1 ,wherein the first resistance element and the inductance element are made from essentially the same metal.4. The oscillator according to claim 1 , further comprising:a parasitic capacitance coupled directly between the first terminal and the second terminal without coupling through the first ...
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