Oscillator

A technology for oscillators and output terminals, applied in the field of high-precision, high-stability, adjustable voltage-controlled + flow-controlled oscillators, which can solve the problems of complex circuit design, oscillator stability and low precision

Pending Publication Date: 2021-06-04
WUXI ETEK MICROELECTRONICS
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the stability and precision of the existing oscillators are not high, and the circuit design for adjusting the frequency and duty cycle of the oscillation waveform is relatively complicated

Method used

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Embodiment Construction

[0010] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0011] Reference herein to "one embodiment" or "an embodiment" refers to a particular feature, structure or characteristic that can be included in at least one implementation of the present invention. "In one embodiment" appearing in different places in this specification does not all refer to the same embodiment, nor is it a separate or selective embodiment that is mutually exclusive with other embodiments. Unless otherwise specified, the words connected, connected, and joined in this document mean that they are electrically connected directly or indirectly.

[0012] Please refer to figure 1 As shown, it is a schematic circuit diagram of an oscillator in an embodiment of the present invention. figure 1 The shown oscillator incl...

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Abstract

The invention provides an oscillator. The oscillator comprises a capacitor C1; a first current source I1; a second current source I2; a comparison circuit used for comparing a voltage drop on the capacitor C1 with a low voltage threshold V1 and a high voltage threshold V2; a threshold voltage generation circuit having its output end output a high voltage threshold V2when the output end of the comparison circuit outputs a charging control signal, and having its output end output the low voltage threshold V1when the output end of the comparison circuit outputs a discharging control signal; and a charge and discharge control circuit used for carrying out charge and discharge control on the capacitor C1, and having its control end connected with the output end of the comparison circuit. Therefore, the stability and the precision of the oscillator are higher, and the frequency and the duty ratio of the oscillation waveform can be adjusted.

Description

【Technical field】 [0001] The invention relates to the technical field of oscillators, in particular to a high-stability, high-precision, adjustable voltage-controlled + flow-controlled oscillator. 【Background technique】 [0002] In many integrated circuit designs, oscillator structures are required to provide clocks, switching signals, etc. At present, RC oscillators, ring oscillators, voltage-controlled oscillators, flow-controlled oscillators, etc. are generally adopted with simple structures. High-precision generally use voltage-controlled or flow-controlled oscillators. However, the stability and precision of the existing oscillator are not high, and the circuit design for adjusting the frequency and duty cycle of the oscillation waveform is relatively complicated. [0003] Therefore, it is necessary to propose an improved technical solution to overcome the above problems. 【Content of invention】 [0004] One of the objectives of the present invention is to provide a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03K5/22
CPCH03K5/22
Inventor 袁敏民汪东毛成烈史良俊
Owner WUXI ETEK MICROELECTRONICS
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