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Voltage-controlled ring oscillator

A ring oscillator, voltage control technology, applied in the direction of automatic power control, electrical components, etc., can solve the problem of lack of characteristics, and achieve the effect of improving linear relationship and high linearity

Inactive Publication Date: 2016-12-07
TELINK SEMICON SHANGHAI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the current voltage-controlled ring oscillator obviously does not have such characteristics, so it is necessary to improve the existing technology

Method used

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  • Voltage-controlled ring oscillator
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Embodiment Construction

[0022] In order to make the object, technical solution and advantages of the present invention clearer, various embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. However, those of ordinary skill in the art can understand that, in each implementation manner of the present invention, many technical details are provided for readers to better understand the present application. However, even without these technical details and various changes and modifications based on the following implementation modes, the technical solution claimed in each claim of the present application can be realized.

[0023] A first embodiment of the present invention relates to a voltage controlled ring oscillator. The specific structure is as figure 2 shown. The voltage-controlled ring oscillator 2 includes: a delay module 21 , a voltage-to-current conversion circuit 22 and a current mirror 23 .

[0024] Wherein, the voltage-to-curre...

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Abstract

The invention relates to the technical field of electronic circuits and discloses a voltage-controlled ring oscillator with high linearity. The voltage-controlled ring oscillator comprises a time delay module, a voltage-to-current conversion circuit and a current mirror, wherein the time delay module is used for generating oscillation signals; the voltage-to-current conversion circuit is used for converting control voltage to driving current; the current mirror is used for mirroring the driving current to the time delay module as the working current of the time delay module; the voltage-to-current conversion circuit is a linear voltage-to-current conversion circuit to enable the frequency of the oscillation signals and the control voltage to present a linear relation; and the time delay unit in the time delay module adopts an output common-mode voltage self-stabilization technology to obtain stable output common-mode level. The voltage-controlled ring oscillator disclosed by the invention has the advantages of high linearity and stable output common-mode voltage.

Description

technical field [0001] The invention relates to the technical field of electronic circuits, in particular to a voltage-controlled ring oscillator with high linearity and stable common-mode output voltage. Background technique [0002] An oscillator is an energy conversion device that can convert DC power into AC power with a certain frequency. The oscillator can be used as an important part of a radio frequency system on chip (RF_SOC) to provide a clock signal for the chip or provide a local carrier signal for the transceiver link. According to the division, oscillators can be divided into external oscillators and internal oscillators, where external oscillators are also called "voltage-controlled oscillators or voltage-controlled oscillators", while internal oscillators are oscillations without voltage control device. Among them, the voltage-controlled oscillator can be further divided into a voltage-controlled ring oscillator and a voltage-controlled inductor-capacitor o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03L7/099
CPCH03L7/0995
Inventor 楼文峰盛文军
Owner TELINK SEMICON SHANGHAI
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