CN101022263A - Pressure control oscillator structure - Google Patents
Pressure control oscillator structure Download PDFInfo
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- CN101022263A CN101022263A CN 200610035421 CN200610035421A CN101022263A CN 101022263 A CN101022263 A CN 101022263A CN 200610035421 CN200610035421 CN 200610035421 CN 200610035421 A CN200610035421 A CN 200610035421A CN 101022263 A CN101022263 A CN 101022263A
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Abstract
A voltage controlled oscillator is prepared as forming oscillator module by positive and negative power supply ends as well as oscillation signal output end; forming voltage regulation module by power supply input end, control voltage input end, grounding end and voltage output end; regulating said control voltage by voltage regulation module and using regulated voltage to control voltage of oscillator module through voltage output end.
Description
Technical field
The present invention relates to a kind of pressure control oscillator structure that has improved.
Background technology
Voltage controlled oscillator is a kind of device that is widely used in electronic system, is used for producing the required various frequency signals of other circuit.Fig. 1 has disclosed the principle of conventional voltage controlled oscillator: voltage controlled oscillator 11 comprises control voltage input terminal 12, power input 13, earth terminal 14 and oscillator signal output 15, when supply voltage was applied to the power input 13 of voltage controlled oscillator 11, the frequency of the oscillator signal that oscillator signal output 15 is exported will change along with the variation of control voltage 12.
Though general voltage controlled oscillator mostly adopts aforesaid operation principle, but for each concrete voltage controlled oscillator structure, the ability of the noise of its inhibition power input 13 and the noise of earth terminal 14 is had nothing in common with each other, and the noise of the noise of power input 13 and earth terminal 14 can directly have influence on the output accuracy and the stability of oscillator signal, if 11 pairs of power supply noises of voltage controlled oscillator or ground noise are comparatively responsive, Shu Chu oscillator signal will have very big jitter error so.Therefore, developing simple in structurely, and is an important research project of industry to power supply noise and ground noise extremely insensitive voltage controlled oscillator.
Summary of the invention
The purpose of this invention is to provide a kind of simple in structure, and to the extremely insensitive pressure control oscillator structure of noise.
For achieving the above object, pressure control oscillator structure provided by the present invention comprises oscillator module and Voltage Regulator Module, and oscillator module comprises positive power source terminal, negative power end and oscillator signal output; Voltage Regulator Module comprises power input, control voltage input terminal, earth terminal and voltage output end, and described Voltage Regulator Module can be regulated control voltage, regulates the voltage of the voltage of back gained by voltage output end control generator module.
Pressure control oscillator structure provided by the present invention adopts Voltage Regulator Module that control voltage is regulated, use the voltage of regulating the back gained that the voltage of oscillator module is controlled, make the output frequency of oscillator module change along with the variation of control voltage, greatly suppressed power supply noise or ground noise owing to control after voltage is regulated through Voltage Regulator Module, the output frequency of oscillator module is stable and accurate.Therefore, pressure control oscillator structure of the present invention has simple in structure, and to the extremely insensitive advantage of noise.
Concrete circuit structure will be introduced in following embodiment in detail.
Description of drawings
Fig. 1 is the circuit theory diagrams of the voltage controlled oscillator of routine;
Fig. 2 is the circuit diagram of first embodiment of the invention;
Fig. 3 is the circuit diagram of second embodiment of the invention;
Fig. 4 is the circuit diagram of third embodiment of the invention.
Be described in further detail below in conjunction with each embodiment and accompanying drawing thereof.
Embodiment
Referring to shown in Figure 2, first embodiment of pressure control oscillator structure 2 of the present invention comprises oscillator module 20 and Voltage Regulator Module 21.Oscillator module 20 comprises positive power source terminal 22, negative power end 26 and oscillator signal output 27.Voltage Regulator Module 21 comprises power input 23, control voltage input terminal 24, earth terminal 25 and voltage output end 28.The positive power source terminal 22 of oscillator module 20 connects the voltage output end 28 of Voltage Regulator Module 21, negative power end 26 ground connection.
Oscillator module 20 can be single-ended or the both-end ring oscillator, also can be inductance capacitance type oscillator, the resistance-capacitance type oscillator, and resistance inductance capacitance type oscillator or other can produce the circuit or the device of oscillator signal.Voltage Regulator Module 21 can be a linear voltage regulator, also can be operational amplifier, voltage buffer, voltage divider, analog to digital converter etc. other can finish the circuit or the device of voltage-voltage-regulation function, this type of Voltage Regulator Module 21 is technique known comparatively, does not do at this and gives unnecessary details.
Power supply VCC provides operating voltage from power input 23 to Voltage Regulator Module 21, control voltage VR then is input in the Voltage Regulator Module 21 by control voltage input terminal 24, when control voltage VR changes, the output voltage V of voltage output end 28+will make corresponding changes and input to the positive power source terminal 22 of oscillator module 20, thus, the corresponding change also will take place in the output frequency of the oscillator signal output 27 of oscillator module 20.Because after control voltage VR regulates through Voltage Regulator Module 21, its output voltage V+extremely insensitive to the noise of power supply VCC, so the output frequency of oscillator module 20 only can change with the variation of control voltage VR, has effectively overcome the noise effect of power supply VCC.
Fig. 3 has disclosed second embodiment that invents described pressure control oscillator structure, pressure control oscillator structure 3 that second embodiment provides and the difference of first embodiment are: the voltage output end 28 of Voltage Regulator Module 21 connects the negative power end 26 of oscillator module 20, and the positive power source terminal 22 of oscillator module 20 can meet power supply VCC, certainly, also other any voltage.When control voltage VR changes, the output voltage V of voltage output end 26-will make corresponding changes and input to the negative power end 26 of oscillator module 20, thus, the corresponding change also will take place in the output frequency of the oscillator signal output 27 of oscillator module 20.Promptly, by regulating the negative power end of oscillator module 20, can realize change equally to output frequency, because after control voltage VR regulates through Voltage Regulator Module 21, its output voltage V-noise to ground is extremely insensitive, so the output frequency of oscillator module 20 only can change with the variation of control voltage VR, has effectively overcome the ground The noise.
Above-mentioned two embodiment have described two kinds of execution modes that pressure control oscillator structure of the present invention overcomes power supply noise and ground noise respectively, certainly, the present invention can also be realized by the 3rd embodiment that Fig. 4 shows, the pressure control oscillator structure 4 that Fig. 4 shows adopts two voltage output ends 28 of Voltage Regulator Module 21 simultaneously, 29 regulate the positive power source terminal 22 and the negative power end 26 of oscillator module 20 respectively, make the output frequency that same oscillator module 20 can change according to the variation of control voltage VR equally, simultaneously, because after control voltage VR regulates through Voltage Regulator Module 21, its output voltage V+and V-is extremely insensitive to power supply noise and ground noise, so the output frequency of oscillator module 20 only can change with the variation of control voltage VR, has effectively overcome power supply noise and ground The noise.
In sum, pressure control oscillator structure of the present invention is to regulate by 21 pairs of control of Voltage Regulator Module voltage VR, use the voltage of regulating the back gained that the voltage (comprising positive voltage and negative supply voltage) of oscillator module 20 is controlled, make the output frequency of oscillator module 20 change along with the variation of control voltage VR, suppressed power supply noise or ground noise owing to control greatly after voltage VR regulates through Voltage Regulator Module 21, so the output frequency of oscillator module 20 is stable and accurate.Therefore, pressure control oscillator structure of the present invention has simple in structure, and to the extremely insensitive advantage of noise.
The present invention is not limited only to above-mentioned three described execution modes of embodiment; for those skilled in the art; the present invention also exists the simple malformation of other, and suchlike minor alteration and equivalent transformation all should be included within the scope that claim of the present invention protects.
Claims (6)
1, pressure control oscillator structure comprises:
Oscillator module, it comprises positive power source terminal, negative power end and oscillator signal output;
It is characterized in that:
A Voltage Regulator Module has power input, control voltage input terminal, earth terminal and voltage output end, and voltage output end is connected with oscillator module.
2, pressure control oscillator structure according to claim 1 is characterized in that:
Described voltage output end connects described positive power source terminal.
3, pressure control oscillator structure according to claim 1 is characterized in that:
Described voltage output end connects described negative power end.
4, pressure control oscillator structure according to claim 1 is characterized in that:
Described voltage output end connects described positive power source terminal and described negative power end respectively.
5, according to each described pressure control oscillator structure of claim 1 to 4, it is characterized in that:
Described oscillator module is single-ended or both-end ring oscillator, inductance capacitance type oscillator, resistance-capacitance type oscillator, resistance inductance capacitance type oscillator or other can produce one of the circuit of oscillator signal or device.
6, according to each described pressure control oscillator structure in the claim 1 to 4, it is characterized in that: described Voltage Regulator Module is that linear voltage regulator, operational amplifier, voltage buffer, voltage divider, analog to digital converter or other can be finished one of the circuit of voltage-voltage-regulation function or device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610035421 CN101022263A (en) | 2006-05-04 | 2006-05-04 | Pressure control oscillator structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610035421 CN101022263A (en) | 2006-05-04 | 2006-05-04 | Pressure control oscillator structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101022263A true CN101022263A (en) | 2007-08-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200610035421 Pending CN101022263A (en) | 2006-05-04 | 2006-05-04 | Pressure control oscillator structure |
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| CN (1) | CN101022263A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103475366A (en) * | 2013-09-26 | 2013-12-25 | 昆山锐芯微电子有限公司 | Voltage-controlled oscillator |
| CN106888003A (en) * | 2017-01-10 | 2017-06-23 | 四川九洲电器集团有限责任公司 | A kind of tuning circuit and frequency synthesizer |
| CN112826511A (en) * | 2019-11-25 | 2021-05-25 | 株式会社理光 | Magnetic field measuring device |
-
2006
- 2006-05-04 CN CN 200610035421 patent/CN101022263A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103475366A (en) * | 2013-09-26 | 2013-12-25 | 昆山锐芯微电子有限公司 | Voltage-controlled oscillator |
| CN103475366B (en) * | 2013-09-26 | 2016-11-16 | 昆山锐芯微电子有限公司 | Voltage controlled oscillator |
| CN106888003A (en) * | 2017-01-10 | 2017-06-23 | 四川九洲电器集团有限责任公司 | A kind of tuning circuit and frequency synthesizer |
| CN112826511A (en) * | 2019-11-25 | 2021-05-25 | 株式会社理光 | Magnetic field measuring device |
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