Temperature-compensated crystal oscillator

Abstract

The invention discloses a temperature-compensated crystal oscillator. The temperature-compensated crystal oscillator comprises a base, a bonding pad, a temperature compensation chip, a quartz vibratorand a metal cover plate; the bonding pad, the temperature compensation chip and the quartz vibrator are arranged on the base, pins of the temperature compensation chip are electrically connected withthe bonding pad, and the metal cover plate is welded to the top of the base and used for covering the temperature compensation chip and the quartz vibrator. According to the temperature-compensated crystal oscillator, the problem that in a traditional temperature-compensated crystal oscillator, the index that the frequency stability in the wide temperature range from minus 55 DEG C to 85 DEG C islower than or equal to + / - 1 ppm cannot be met is solved; by optimizing the product structure and the debugging method, the index that the frequency stability of the crystal oscillator in the wide temperature range from minus 55 DEG C to 85 DEG C is lower than or equal to + / - 1 ppm is achieved; and by means of miniaturization and integration design, the SMD5032 outline dimension of the product isachieved.

Description

technical field [0001] The invention relates to the technical field of crystal oscillators. More particularly, it relates to a temperature compensated crystal oscillator. Background technique [0002] Crystal oscillators are widely used in electronic products. It is often called the heart of electronic products. The stability of its output frequency directly affects the performance of electronic systems. With the development of the communication industry, Beidou GPS satellite navigation industry, signal generator and digital frequency meter and other instrumentation industries in recent years, crystal oscillators with high output frequency stability are required to provide precise standard frequency and time for electronic systems Reference, if the frequency of the crystal oscillator, which is the main standard frequency and time reference in the above-mentioned equipment, is unstable, it will directly affect the stability of the communication system, the accuracy of satell...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a small high-precision temperature-compensated crystal oscillator, which solves the problem that the traditional temperature-compensated crystal oscillator cannot meet the frequency stability of ≤±1ppm in a wide temperature range of -55°C to +85°C, by optimizing the structure of the product and debugging methods, to achieve the frequency stability index of the crystal oscillator in the wide temperature range of -55 ° C to +85 ° C ≤ ± 1ppm, and through the miniaturization and integration design, the product's SMD5032 external dimension is realized

Images