All silicon oscillator uses a pure silicon LC oscillator to generate single-ended or differential frequency signals through frequency synthesis and compensation technology without quartz or MEMS devices, providing a circuit reference clock source.

Crystal oscillator (SPXO) is an active device that integrates crystal and oscillating circuit. It can output CMOS or differential frequency signal to provide reference clock source.

TCXO is a quartz crystal oscillator, which compensates the frequency offset caused by the change of ambient temperature through the temperature compensation circuit to realize high-precision frequency output.

OCXO is a crystal oscillator that uses a constant temperature bath to keep the temperature of quartz crystal constant and minimizes the change of oscillator output frequency caused by the change of ambient temperature.