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High-accuracy oscillator

一种振荡器、高精度的技术，应用在输出稳定、脉冲产生、电气元件等方向，能够解决很难调节、工艺补偿和温度补偿分开设计、无法同时满足工艺补偿和温度补偿等问题，达到便于调节、提高精度的效果

Active Publication Date: 2014-02-19
IPGOAL MICROELECTRONICS (SICHUAN) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is generally difficult to design process compensation and temperature compensation separately in existing oscillators, because process compensation and temperature compensation have mutual influence, so it is difficult to adjust, and it is impossible to meet process compensation and temperature compensation at the same time

Method used

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Embodiment Construction

[0020] Embodiments of the present invention will now be described with reference to the drawings, in which like reference numerals represent like elements. As mentioned above, the present invention provides a high-precision oscillator. In the high-precision oscillator of the present invention, process compensation and temperature compensation are independently designed. The two do not affect each other and are easy to adjust; effect, improving the accuracy of the output clock.

[0021] Please refer to figure 1 , figure 1 It is a system block diagram of the high-precision oscillator of the present invention. As shown in the figure, the high-precision oscillator of the present invention includes a voltage reference module, a compensation current generation module and a ring oscillator; the voltage reference module generates a reference voltage VERF containing field effect tube process angle information, and the reference voltage VREF is input to the compensation current gener...

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Abstract

The invention discloses a high-accuracy oscillator. The high-accuracy oscillator comprises a voltage reference module, a compensating current generating module and an annular oscillator; the voltage reference module comprises a plurality of detected field-effect tubes, process corner detection is conducted on the detected field-effect tubes to generate reference voltage comprising process corner information of the detected field-effect tubes, and the reference voltage is input into the compensating current generating module; temperature compensation is conducted on the reference voltage by the compensating current generating module, currents having process compensation and temperature compensation are generated, and the compensating current generating module inputs the generated currents into the annular oscillator; the annular oscillator receives the currents generated by the compensating current generating module, and clocks having stable frequency are output according to the currents. According to the high-accuracy oscillator, process compensation and temperature compensation are designed independently and do not affect each other, and regulation is facilitated; in addition, frequency of the output clocks is not affected by the process and the temperature, and accuracy of the output clocks is improved.

Description

technical field [0001] The invention relates to the technical field of analog circuit oscillators, in particular to a high-precision oscillator. Background technique [0002] Existing oscillators generally have process compensation, and temperature compensation is rarely introduced, so the oscillator frequency will change with temperature changes in actual work, which is generally called temperature drift, making the clock accuracy of its output On the low side. In existing oscillators, it is generally difficult to design process compensation and temperature compensation separately, because the process compensation and temperature compensation have a mutual influence relationship, so it is difficult to adjust, and the process compensation and temperature compensation cannot be satisfied at the same time. [0003] Therefore, it is necessary to provide an improved high-precision oscillator to overcome the above defects. Contents of the invention [0004] The purpose of the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03L1/02
CPCH03L1/022H03K3/011H03K3/0322H03L1/00H03L1/04
Inventor 邹铮贤其他发明人请求不公开姓名
Owner IPGOAL MICROELECTRONICS (SICHUAN) CO LTD
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