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Stable voltage-controlled crystal oscillator circuit

A voltage-controlled crystal oscillator and circuit technology, applied to electrical components, power oscillators, etc., can solve problems such as unstable adjustment of crystal oscillator circuits

Inactive Publication Date: 2015-03-25
CHENGDU SHENGJUN ELECTRONICS EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the above problem of unstable adjustment in the current crystal oscillator circuit, the present invention provides a stable voltage-controlled crystal oscillator circuit, which can provide a stable controllable voltage, and the frequency of the clock signal is not easy to fluctuate during the adjustment process, which is convenient and practical

Method used

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  • Stable voltage-controlled crystal oscillator circuit

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Embodiment 1

[0016] Embodiment one, figure 1 A circuit diagram of a stable voltage-controlled crystal oscillator provided by this embodiment is shown. The stable voltage-controlled crystal oscillator circuit is characterized in that it includes: a voltage-stabilizing unit, a voltage-controlled crystal oscillator chip, a bypass unit, an adjustable resistor RX1, a resistor R1, a resistor R2 and a resistor R3; the first end of the voltage-stabilizing unit is connected to The first end of the adjustable resistor RX1 is connected to the first end of the resistor R1, the second end of the voltage stabilizing unit is connected to the second end of the adjustable resistor RX1, and the second end of the resistor R1 is connected to the sliding end of the adjustable resistor RX1 and the resistor R2 The first terminal of the resistor R2 is grounded, the sliding terminal of the adjustable resistor RX1 is connected to the voltage control terminal of the voltage-controlled crystal oscillator chip; the fi...

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Abstract

The invention relates to the field of development of circuit boards and discloses a stable voltage-controlled crystal oscillator circuit. According to the stable voltage-controlled crystal oscillator circuit, the two ends of an adjustable resistor RX1 are connected with the first end and the second end of a voltage stabilization unit respectively, and the voltage stabilization unit provides a stable voltage and provides a stable controllable voltage for a voltage-controlled crystal oscillator chip through the adjustable resistor RX1; consequently, the frequency of a clock signal is not prone to fluctuation in the adjusting process, and the stable voltage-controlled crystal oscillator circuit is convenient to use and practical.

Description

technical field [0001] The invention relates to the field of circuit board development, in particular to a stable voltage-controlled crystal oscillator circuit. Background technique [0002] A circuit board, also known as a printed circuit board, is an integrated board that combines multiple chips or devices to achieve target functions. Most of the existing circuit boards are digital circuit boards, so a crystal oscillator circuit is required to provide a clock signal to enable the digital chips on the circuit board to process data at high speed. In the actual circuit board development process, it is sometimes necessary to adjust the clock signal frequency of the crystal oscillator circuit. In view of this situation, the method of voltage-controlled crystal oscillator is usually adopted, that is, the crystal frequency of the voltage-controlled crystal oscillator chip is adjusted by applying an external controllable voltage (generally, the external controllable voltage is ad...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03B5/04
Inventor 肖燕刘迪俊
Owner CHENGDU SHENGJUN ELECTRONICS EQUIP