RC oscillating circuit and RC oscillator

An oscillation circuit and bias circuit technology, applied in the field of radio frequency communication, can solve the problems of complex oscillator structure, high circuit power consumption, unsuitable for low power consumption applications, etc., to improve self-adjustment ability, improve output frequency accuracy, and have Conducive to circuit integration and multi-occasion applications

Pending Publication Date: 2021-10-08
ZHUHAI JIELI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] During the implementation process, the inventors found that there are at least the following problems in the traditional technology: the traditional oscillator structure has complex structures, high circuit power consumption, and is not suitable for low-power applications.

Method used

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  • RC oscillating circuit and RC oscillator
  • RC oscillating circuit and RC oscillator
  • RC oscillating circuit and RC oscillator

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Embodiment Construction

[0046]In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. Embodiments of the application are given in the drawings. However, the present application can be embodied in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of this application more thorough and comprehensive.

[0047] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this application belongs. The terms used herein in the specification of the application are only for the purpose of describing specific embodiments, and are not intended to limit the application.

[0048] It can be understood that the terms "first", "second", etc. used in this application may be used to...

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Abstract

The invention relates to an RC oscillating circuit and an RC oscillator. The RC oscillating circuit comprises a biasing circuit and an oscillating unit which are connected in sequence; the biasing circuit comprises a first-stage self-adjusting loop and a second-stage self-adjusting loop; the first-stage self-adjusting loop comprises a first voltage drop unit and a first negative feedback circuit; the first negative feedback circuit adjusts the voltage value of the power supply voltage processed by the first voltage drop unit and outputs a negative feedback voltage; the second-stage self-adjusting loop comprises a second voltage drop unit and a second negative feedback circuit; and the second negative feedback circuit adjusts the voltage value of the negative feedback voltage processed by the second voltage drop unit and outputs oscillation voltage used for supplying power to the oscillation unit. The structure of the biasing circuit is simplified, the self-adjusting capacity of the biasing circuit is improved, the purpose of a low-power-consumption high-precision voltage self-adjusting oscillator is achieved, the output frequency precision of the RC oscillator is improved, and circuit integration and multi-occasion application are facilitated.

Description

technical field [0001] The present application relates to the technical field of radio frequency communication, in particular to an RC oscillator circuit and an RC oscillator. Background technique [0002] As a common signal generation circuit, RC (resistor, capacitor) oscillator has the characteristics of simple structure, low power consumption, low cost, and easy integration, and is widely used in on-chip low-frequency clock generation circuits. The RC oscillator uses the resistor-capacitor charge-discharge time-delay unit to oscillate. The generated frequency is greatly affected by the power supply voltage and power supply noise, ambient temperature, and the electrical characteristics of the various components that make up the oscillator. In different applications, Different processes and temperature changes will have an impact on the output frequency accuracy. Therefore, it has become an important research direction to design an oscillator whose output frequency is inde...

Claims

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Application Information

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IPC IPC(8): H03B5/12
CPCH03B5/1228H03B5/129
Inventor 胡继敦陈春平
Owner ZHUHAI JIELI TECH
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