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Oscillation device and control method thereof

A technology of oscillation device and oscillator, applied in the direction of automatic control of power, electrical components, etc., can solve the problems of wasting energy and power consumption, and achieve the effect of reducing power consumption

Active Publication Date: 2011-09-28
REALTEK SEMICON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the continuous operation of the inverter In receiving a large current will cause unnecessary power consumption and waste energy

Method used

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  • Oscillation device and control method thereof
  • Oscillation device and control method thereof
  • Oscillation device and control method thereof

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Embodiment Construction

[0027] The oscillating device and its control method proposed by the present invention will be described in detail below with reference to the drawings.

[0028] Figure 2A A block diagram showing an embodiment of the oscillating device of the present invention is shown. The oscillation device 200 includes an oscillator 100 , a frequency-to-voltage circuit 201 , and a voltage-to-current circuit 202 .

[0029] The oscillator 100 receives an oscillator current I and outputs an oscillation frequency signal Xout at an output terminal. Among them, this embodiment takes figure 1 The oscillator 100 shown is for illustration, but in other embodiments, the oscillator 100 can be implemented by various existing or future developed oscillators, and is not limited to the oscillators of the following embodiments.

[0030] The frequency-to-voltage circuit 201 is coupled to the oscillator 100 , detects the oscillation frequency signal Xout output by the oscillator 100 and determines an adj...

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Abstract

The invention discloses an oscillation device and a control method thereof. The oscillation device comprises an oscillator, a frequency-voltage circuit and a voltage-current circuit, wherein the oscillator is used for receiving oscillator current with a first current value and outputting an oscillation frequency signal at an output end; the frequency-voltage circuit is coupled with the oscillator and is used for determining regulating voltage according to the oscillation frequency signal; the voltage-current circuit is coupled with the frequency-voltage circuit and is used for regulating oscillator current according the regulating voltage; and after the oscillator starts running, the oscillator current is adjusted to a second current value by using the regulating voltage according to the oscillation frequency signal.

Description

technical field [0001] The invention relates to an oscillating device, in particular to an oscillating device with energy-saving and power-saving functions. Background technique [0002] figure 1 is a schematic diagram of a known oscillator. The oscillator 100 includes an oscillation unit 101 and a crystal module 102 . The oscillation unit 101 includes an inverter In and a resistor R. The crystal module 102 includes a quartz crystal, such as a piezoelectric quartz transistor (Piezoelectric quartz crystal) Pi, and two capacitors C1 and C2. [0003] During operation, the oscillating unit 101 cooperates with the capacitors C1 and C2 to oscillate via the piezoelectric quartz transistor Pi to generate an oscillating frequency signal Xout. Generally speaking, in order to achieve the effect of fast start-up to generate the oscillation frequency signal Xout, the oscillator 100 receives a relatively large oscillation current, such as 3˜6 mA or above. During the oscillating proce...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03L5/00
Inventor 叶明郁黄祯治曹太和
Owner REALTEK SEMICON CORP
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