A method for outputting a high-precision high-frequency clock signal and an oscillation circuit thereof
An oscillation circuit, high-frequency clock technology, applied in the direction of electrical components, automatic power control, etc., can solve the problems of frequency error, difficult to apply to the application environment, stability and power consumption are not good enough, to achieve the effect of simplifying the structure
Active Publication Date: 2017-04-12
合肥健天电子有限公司
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Problems solved by technology
However, since the frequency of a simple inverter ring oscillator has a very large error due to the influence of voltage or capacitance accuracy, it is difficult to apply to high-frequency application environments
[0003] However, the frequency adjustment under the same technology adopts the PLL phase-locked loop method, and the stability and power consumption are not good enough.
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[0031] The ensuing description of the invention generally refers to specific structural embodiments and methods. It is to be understood that there is no intent to limit the invention to the specific disclosed embodiments and methods, but that the invention may be practiced using other features, elements, methods and embodiments. The preferred embodiments are described to illustrate the invention, not to limit its scope, which is defined by the scope of the claims. Those skilled in the art will recognize various equivalents of the subsequent description.
[0032] figure 1 Among them is the oscillator circuit framework diagram that we implement according to the present invention, it is characterized in that, comprises:
[0033] A method for generating a high-precision high-frequency clock signal and its corresponding oscillator circuit. Its oscillating circuit is characterized in that it includes:
[0034] First input, first output, second output, low frequency oscillator, f...
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The invention provides a method for outputting high-precision and high-frequency clock signals and an oscillating circuit. The oscillating circuit comprises a low-frequency oscillator, a high-frequency oscillator, a frequency regulator, a first input, a first output and a second output. Fine adjustment configuration signals are input into the low-frequency oscillator through the first input; the low-frequency oscillator outputs low frequency clock signals through the first output; meanwhile, the low frequency clock signals are input into the frequency regulator; the frequency regulator outputs automatic calibrating signals to the high-frequency oscillator through adjustment and compensation of the frequency regulator; finally, the high-frequency oscillator outputs the stable second output, namely high-frequency clock signals. Through the method for outputting the high-precision and high-frequency clock signals and the oscillating circuit, the high-precision and high-frequency clock signals can be output.
Description
technical field [0001] The invention relates to the technical field of integrated circuits, in particular to an oscillator design method and circuit. Background technique [0002] Oscillator circuits are widely used in various electronic products, especially in the field of integrated circuits, where oscillators become the generators of clocks required for digital modules of integrated circuits to process signals. However, since the frequency of a simple inverter ring oscillator has a very large error due to the influence of voltage or capacitance accuracy, it is difficult to apply to a high-frequency application environment. [0003] However, the frequency adjustment under the same technology adopts the method of PLL phase-locked loop, and the stability and power consumption are not good enough. [0004] Since the low-frequency ring oscillator is used as a reference for the frequency adjustment circuit of the DLL structure to adjust the output frequency of the high-frequen...
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IPC IPC(8): H03L7/18
Inventor 张涛何进举白宁韩正琪
Owner 合肥健天电子有限公司