Non-inverting multi-mode oscillator
| DWPI Title: Non-inverting multi-mode oscillator circuit e.g. pierce oscillator circuit, has tank circuit capacitor and tank circuit resistor that are connected in series and form specific path between amplifier input and ground |
| Abstract: Various technologies described herein pertain to non-inverting multi-mode oscillators. An oscillator circuit can include a non-inverting sustaining amplifier and a feedback network. The non-inverting sustaining amplifier includes an amplifier input and an amplifier output. The feedback network includes a crystal, an input portion, and an output portion. The crystal of the feedback network can be connected between the amplifier input and the amplifier output of the non-inverting sustaining amplifier. The input portion of the feedback network can be connected between the amplifier input and ground, and can include an inductor realized using a tank circuit. Further, the output portion of the feedback network can be connected between the amplifier output and ground, and can include a capacitor. Moreover, the crystal can operate in series resonance mode or parallel resonance mode. |
| Use: Non-inverting multi-mode oscillator circuit e.g. pierce oscillator circuit. |
| Advantage: The non-inverting sustaining amplifier of the oscillator circuit controls gain, which also allows the crystal to control the oscillation and minimizes parasitic oscillation through the shunt capacitance of the crystal. The isolation resistor reduces power to the crystal. |
| Novelty: The oscillator circuit has a non-inverting sustaining amplifier that comprises an amplifier input (501) and an amplifier output (502). A feedback network comprises a crystal connected between the amplifier input and the amplifier output of the non-inverting sustaining amplifier. An input portion is connected between the amplifier input and ground. The input portion comprises an inductor, a tank circuit capacitor and a tank circuit resistor. The inductor forms a first path between the amplifier input and ground. The tank circuit capacitor and the tank circuit resistor are connected in series and form a second path between the amplifier input and ground. The two paths are separate and parallel to each other. An output portion comprising a capacitor, is connected between the amplifier output and ground. |
| Filed: 9/18/2017 |
| Application Number: US15707541A |
| Tech ID: SD 13860.1 |
| This invention was made with Government support under Contract No. DE-NA0003525 awarded by the United States Department of Energy/National Nuclear Security Administration. The Government has certain rights in the invention. |
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