Differential crystal oscillator circuit

The utility model discloses a differential crystal oscillator circuit, which comprises a power supply module, a differential amplifier, a resonance port, a resonance element and an output port, the differential amplifier is coupled to the power supply module and the resonance port, the differential amplifier takes the power supply module as an active load, the power supply module comprises a control port, and the control port receives an external bias voltage; the resonance port is coupled with the resonance element, and the resonance port comprises a first resonance terminal and a second resonance terminal; the resonating element is coupled to the output port, and the output port includes a first output terminal and a second output terminal. According to the utility model, common-mode noise can be effectively eliminated, and the reliability of the crystal oscillator is improved. 本实用新型公开了一种差分晶体振荡器电路，包括电源模块、差分放大器、谐振端口、谐振元件和输出端口；所述差分放大器耦合到所述电源模块和所述谐振端口，差分放大器以所述电源模块作为有源负载，电源模块包括控制端口，所述控制端口接收外部偏置电压；所述谐振端口耦合所述谐振元件