| 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. |