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A crystal oscillator starting circuit, bare chip and chip

A crystal oscillator and circuit technology, applied in the direction of electrical components, impedance networks, etc., can solve the problems of poor flexibility and the inability to adjust the start-up mode of the crystal oscillator, and achieve the effect of strong compatibility and flexibility

Active Publication Date: 2019-04-23
APPOTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The embodiment of the present invention provides a dual-mode crystal oscillator starting circuit, a bare chip and a chip, which can solve the problem that the existing crystal oscillator starting mode cannot be adjusted according to different applications and has poor flexibility

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  • A crystal oscillator starting circuit, bare chip and chip
  • A crystal oscillator starting circuit, bare chip and chip
  • A crystal oscillator starting circuit, bare chip and chip

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Embodiment Construction

[0050] In order to facilitate the understanding of the present invention, the present invention will be described in more detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. It should be noted that when an element / unit is said to be “connected” to another element / unit, it may be directly connected to another element / unit, or there may be one or more intervening elements / units therebetween.

[0051]Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the technical field of the invention. The terms used in the description of the present invention in this specification are only for the purpose of describing specific embodiments, and are not used to limit the present invention. In addition, ...

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Abstract

The embodiment of the invention discloses a crystal oscillator oscillation starting circuit, a bare chip and a chip. The dual-mode crystal oscillator oscillation starting circuit comprises a control unit which is used for receiving a control signal; and a crystal oscillator oscillation starting unit which is connected with the control unit. The control unit controls the crystal oscillator oscillation starting unit to enter a corresponding crystal oscillator oscillation starting mode according to the control signal. The crystal oscillator oscillation starting mode comprises a single-end crystal oscillator oscillation starting mode and a dual-end crystal oscillator oscillation starting mode. Through application of the mode, according to the embodiment of the invention, single-pin oscillation starting or dual-pin oscillation starting is flexibly realized according to different application occasions and the circuit has high flexibility.

Description

technical field [0001] The embodiments of the present invention relate to the technical field of integrated circuits, in particular to a crystal oscillator starting circuit, a bare chip and a chip. Background technique [0002] Oscillating circuits are often used to provide clock signals for integrated circuits. At present, among many types of oscillating circuits, crystal oscillator circuits based on quartz crystal oscillators are widely used in clocks and watches, military industry, communications and other fields that require high oscillation frequency due to their ability to generate accurate and stable oscillation waveforms. [0003] Among them, such as figure 1 The Pierce crystal oscillator circuit shown is the most commonly used two-port crystal oscillator circuit in existing integrated circuits. In the crystal oscillator circuit, the capacitors C1, C2 and the quartz crystal together form a frequency selection network, the inverter OP acts as an amplifying circuit, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03H9/19
CPCH03H9/19
Inventor 陈文韬
Owner APPOTECH