Temperature sensing oscillator and production method thereof as well as temperature frequency correction system

Abstract

The invention discloses a temperature sensing oscillator and a production method thereof as well as a temperature frequency correction system, wherein the temperature sensing oscillator comprises an oscillator, a temperature sensor and a storage unit in a package and is used for generating a preset frequency signal; the temperature sensor is used for sensing the ambient temperature so as to generate a temperature signal showing the ambient temperature; the ambient temperature sensed by the temperature sensor is basically equal to the work temperature of the oscillator; the storage unit is used for storing temperature frequency characteristic relevant data; the package comprises a frequency output pin, a temperature output pin and a data input / output pin; the preset frequency signal generated by the oscillator is output through the frequency output pin; the temperature signal acquired by the temperature sensor is output through the temperature output pin; and the temperature frequency characteristic relevant data are written or read out of the storage unit through the data input / output pin. Therefore, a user can compensate aiming at the temperature sensing oscillator according to the requirement; meanwhile, the invention can maintain quite-low cost.

Description

technical field [0001] The invention relates to the field of electronic circuit design, in particular to a temperature-sensing oscillator, a production method thereof, and a temperature-frequency correction system. Background technique [0002] In order to ensure that all electronic devices work properly or synchronously, it is very important to provide accurate clock signals in electronic circuit design. Generally, the clock signal can be generated by a crystal oscillator (XO for short), wherein the crystal oscillator is an electronic circuit that utilizes the mechanical resonance of an oscillating crystal of piezoelectric material to generate an electrical signal of a certain frequency. This frequency is often used for timekeeping (such as in a quartz watch), it can also be used to provide a clock signal for a digital integrated circuit, and it can also be used to stabilize the frequency of a wireless transmitter / receiver. One cause of a clock signal that differs from des...

AI Technical Summary

Problems solved by technology

However, such a voltage-controlled TCXO first needs a high-quality crystal to meet the third-order linear compensation requirement, and such a high-quality crystal is very expensive, especially for a small-sized crystal

Secondly, due to the limitation of the maximum output frequency of the crystal oscillator, it is also difficult to ensure high frequency stability and accuracy

In addition, the temperature-compensated crystal oscillator TCXO cannot perform temperature-frequency compensation according to the unique temperature-frequency characteristics of the crystal oscillator in it, but uses a fixed temperature-frequency characteristic to perform temperature-frequency compensation on all crystal oscillators, which not only requires high-quality and highly consistent crystal oscillators, and ultimately there is no way to determine the unique temperature-frequency characteristics of crystal oscillators used within

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