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Multi-Phase Clock Generation Circuit

A multi-phase clock and circuit generation technology, applied in the direction of electrical components, automatic power control, etc., can solve the problems of low resolution, high power consumption, voltage and temperature sensitivity, etc., and achieve good mobility, strong anti-noise, resolution high rate effect

Active Publication Date: 2020-09-15
SHANGHAI JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are three main methods for generating multi-phase clocks: (1) The multi-phase clock generation circuit based on inverter chains, the main problems of which are high power consumption and low resolution; (2) The voltage-controlled oscillator based on phase interpolator can Output a multi-phase clock with higher resolution, but it is sensitive to changes in process, voltage and temperature (PVT); (3) A feedback-based voltage-controlled oscillator VCO can improve phase resolution and have better anti-PVT Change characteristics, but the voltage-controlled oscillator based on feedback is an analog circuit, the portability between processes is poor, and the circuit area and power consumption are large

Method used

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Embodiment Construction

[0043] The present invention will be described in detail below in conjunction with specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0044] A kind of multi-phase clock generation circuit provided according to the present invention, comprises:

[0045] m n-level self-timing oscillation rings;

[0046] The m n-stage self-timing oscillating rings are coupled.

[0047] Specifically, the n-level self-timing oscillation loop includes:

[0048] n multi-input Miller unit Muller C_element;

[0049] The multi-input Miller unit Muller C_element includes: multiple sets of inputs with the same function, at least one set of which is used to gen...

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Abstract

The invention provides a multi-phase clock generation circuit. The multi-phase clock generation circuit comprises m n stages of self-timing oscillation rings, And the m n stages of self-timing oscillation rings are coupled. The method is based on full-digital design, has the comprehensive performance of good mobility between processes, area, power consumption and PVT resistance, and has the advantages of high resolution and strong noise resistance.

Description

technical field [0001] The invention relates to the field of semiconductor integrated circuits, in particular to a multi-phase clock generation circuit. Background technique [0002] Many communication or signal processing systems require a high-resolution multi-phase clock signal generation circuit, such as serial-parallel / parallel-serial conversion circuits in high-speed interconnects, synthetic fractional clock modules in phase-locked loops, and high-precision test and measurement circuits Wait. At present, there are three main methods for generating multi-phase clocks: (1) The multi-phase clock generation circuit based on inverter chains, the main problems of which are high power consumption and low resolution; (2) The voltage-controlled oscillator based on phase interpolator can Output a multi-phase clock with higher resolution, but it is sensitive to changes in process, voltage and temperature (PVT); (3) A feedback-based voltage-controlled oscillator VCO can improve p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03L7/099H03L7/16
Inventor 蒋剑飞王琴景乃锋绳伟光
Owner SHANGHAI JIAOTONG UNIV