Crystal oscillator circuit capable of starting oscillation stably

Abstract

The invention provides a crystal oscillator circuit capable of starting oscillation stably, and the crystal oscillator circuit comprises an active drive module, the first end of the active drive module being electrically connected with an OSCI end, and the second end of the active drive module being electrically connected with an OSCO end; a disturbance module, the first end of the disturbance module being electrically connected with the third end of the active driving module; an oscillation stop detection module, electrically connected with the second end of the disturbance module; a low-frequency auxiliary oscillation module, the first end of the low-frequency auxiliary oscillation module being electrically connected with the first end of the active driving module; and an output shapingmodule, the first end of the output shaping module being electrically connected with the second end of the low-frequency auxiliary oscillation module. By adopting the oscillation stop detection module, the low-frequency auxiliary oscillation module, the disturbance module and the disturbance pulse generation module, the stability of the crystal oscillator is greatly enhanced, the oscillation starting time of the crystal oscillator is shortened, and oscillation stop of the crystal oscillator is prevented.

Description

technical field [0001] The invention relates to the technical field of crystal oscillators, in particular to a crystal oscillator circuit with stable start-up. Background technique [0002] Quartz crystal resonator, referred to as quartz crystal or crystal, is an electronic component that uses the piezoelectric effect of quartz crystal to generate high-precision oscillation frequency. It is a passive component and needs to be matched with an external circuit to generate oscillation. The crystal includes a flat plate Piezoelectric resistance material, this material allows the conversion of mechanical energy and electrical energy. This energy exchange is most efficient at a special frequency, which is called the resonance frequency. Quartz crystal oscillators are known for their extremely high frequency stability. Wide application, low power consumption, fast startup, low voltage operation and low level drive have become a trend. Contents of the invention [0003] The inven...

AI Technical Summary

Problems solved by technology

[0003] The present invention provides a crystal oscillator circuit with stable start-up, the purpose of which is to solve the common problems of slow start-up and possible stop-up of traditional crystal oscillators

Images