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an oscillating circuit

An oscillating circuit and oscillating signal technology, applied in power oscillators, electrical components, etc., can solve the problem of high energy consumption of oscillating circuits, and achieve the effects of reducing circuit energy consumption, reducing control power consumption, and simplifying circuits

Active Publication Date: 2017-06-06
SHANGHAI HUAHONG GRACE SEMICON MFG CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] In order to effectively suppress the influence of PVT (Process Voltage Temperature) deviation on the circuit oscillation frequency, the oscillation circuit in the prior art needs at least two comparison units, and the comparison units consume a lot of energy to achieve a higher comparison rate
Therefore, the energy consumption of the oscillating circuit in the prior art is relatively high

Method used

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Embodiment Construction

[0048]In order to make the purpose, features and effects of the present invention more obvious and understandable, the specific implementation manners of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0049] Many specific details are set forth in the following description to facilitate a full understanding of the present invention, but the present invention can also be implemented in other ways than described here, so the present invention is not limited by the specific embodiments disclosed below.

[0050] like image 3 The shown oscillation circuit is suitable for outputting the oscillation signal Fout, including:

[0051] The charging unit 200 , the discharging unit 201 , the reference unit 202 , the comparing unit 203 and the output unit 204 .

[0052] in:

[0053] The charging unit 200 and the discharging unit 201 can be integrated in the same charging and discharging structure, and it has a charging and discharg...

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Abstract

The invention relates to an oscillating circuit, comprising a charge unit, a discharge unit, a reference unit and a comparing unit, wherein the comparing unit comprises a positive end, a negative end, and an output end for outputting a comparison signal; the charge unit is applicable to charging the positive end to a first level when the comparison signal is the first signal; the charge unit is applicable to discharging the positive end to a second level when the comparison signal is the second signal; the reference unit is applicable to outputting first reference voltage to the negative end when the comparison signal is the first signal, and outputting second reference voltage to the negative end when the comparison signal is the second signal; the level values of the first level, the first reference level, the second reference level and the second level are orderly reduced progressively. By adopting the oscillating circuit, energy consumption of the oscillating circuit can be reduced.

Description

technical field [0001] The invention relates to the technical field of integrated circuits, in particular to an oscillation circuit. Background technique [0002] In large-scale digital integrated circuits, the clock signal has become an essential part. The clock signal can be generated by the oscillating signal output by the oscillating circuit. In these digital system circuits, there are three commonly used oscillating circuits: ring oscillating circuit, crystal oscillating circuit and RC (resistor-capacitor) oscillating circuit. [0003] The ring oscillation circuit has a wide oscillation range and high stability, but the ring oscillation circuit is sensitive to power supply noise and has a large layout size. The frequency of the crystal oscillator circuit is very accurate, and the work is stable. Its accuracy is only related to the natural frequency of the selected crystal device. However, the power consumption of the crystal oscillator circuit is large and the price is...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03B5/20
Inventor 秦义寿
Owner SHANGHAI HUAHONG GRACE SEMICON MFG CORP
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