CN107222182B - Quartz crystal oscillator circuit - Google Patents
Quartz crystal oscillator circuit Download PDFInfo
- Publication number
- CN107222182B CN107222182B CN201710394955.3A CN201710394955A CN107222182B CN 107222182 B CN107222182 B CN 107222182B CN 201710394955 A CN201710394955 A CN 201710394955A CN 107222182 B CN107222182 B CN 107222182B
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- circuit
- resistor
- crystal oscillator
- quartz crystal
- inductor
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- 239000013078 crystal Substances 0.000 title claims abstract description 35
- 239000010453 quartz Substances 0.000 title claims abstract description 28
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 title claims abstract description 28
- 239000003990 capacitor Substances 0.000 claims abstract description 21
- 230000010355 oscillation Effects 0.000 abstract description 12
- 239000004065 semiconductor Substances 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
- H03H9/15—Constructional features of resonators consisting of piezoelectric or electrostrictive material
- H03H9/17—Constructional features of resonators consisting of piezoelectric or electrostrictive material having a single resonator
- H03H9/19—Constructional features of resonators consisting of piezoelectric or electrostrictive material having a single resonator consisting of quartz
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- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Oscillators With Electromechanical Resonators (AREA)
Abstract
The invention provides a quartz crystal oscillator circuit, and belongs to the technical field of semiconductor integrated circuits. The circuit includes: the circuit comprises a first resistor, a second resistor, a third resistor, a first inductor, a second inductor, a first capacitor and a second capacitor; the first resistor and the first inductor are connected in series and then connected in series with a circuit formed by connecting the first capacitor and the third resistor in parallel to form a first branch circuit; the second capacitor is connected in series with a circuit formed by connecting the second inductor and the second resistor in parallel to form a second branch circuit; the first branch circuit and the second branch circuit are connected in parallel and then connected between the input end and the output end. The quartz crystal oscillator circuit of the invention introduces a second inductor, a second resistor and a third resistor on the basis of the traditional crystal oscillator circuit; compared with the existing quartz crystal oscillation circuit, the oscillation frequency of the circuit can reach hundreds of megahertz, which greatly expands the application range of the quartz crystal oscillator.
Description
Technical Field
The invention belongs to the technical field of semiconductor integrated circuits, and particularly relates to a quartz crystal oscillator circuit.
Background
The quartz crystal oscillator is called quartz crystal oscillator for short, and is made of quartz crystal slices with piezoelectric effect. When the frequency of the alternating electric field is the same as the natural frequency of the crystal, the vibration becomes very strong, which is the reaction of the resonance characteristic of the crystal. By utilizing such characteristics, it is possible to replace LC (coil and capacitor) resonance circuits, filters, and the like with resonators. The resonator has the advantages of small volume, light weight, high reliability, high frequency stability and the like, and is applied to household appliances and communication equipment. Since the quartz crystal oscillator has extremely high frequency stability, it is mainly used as a resonant element in an oscillation circuit requiring very stable frequency.
A conventional quartz crystal oscillator circuit is shown in fig. 1 and includes: the inductor comprises a first resistor R1, a first inductor L1, a first capacitor C1 and a second capacitor C2. A first capacitor C1, a first inductor L1, and a first resistor R1 connected in series in sequence, connected in parallel with the second capacitor C2, and connected to the input terminal UINAnd an output terminal UOUTIn the meantime.
The traditional quartz crystal oscillator circuit has the defect of low oscillation frequency, and the oscillation frequency of most quartz crystal oscillators is less than one hundred megahertz. This makes it necessary to use a quartz crystal oscillator and a high-frequency phase-locked loop to build a high-frequency clock system in many high-frequency applications, which increases the design complexity and the system cost.
Disclosure of Invention
In order to solve the technical problem of low oscillation frequency of the existing quartz crystal oscillator, the invention improves the traditional quartz crystal oscillator and provides a quartz crystal oscillator circuit with high oscillation frequency.
A quartz crystal oscillator circuit comprising: the circuit comprises a first resistor R1, a second resistor R2, a third resistor R3, a first inductor L1, a second inductor L2, a first capacitor C1 and a second capacitor C2; the first resistor R1 and the first inductor L1 are connected in series and then are connected in series with a circuit formed by connecting the first capacitor C1 and the third resistor R3 in parallel to form a first branch circuit; the second capacitor C2 is connected in series with a circuit formed by connecting the second inductor L2 and the second resistor R2 in parallel to form a second branch circuit; the first branch and the second branch are connected in parallel and then connected to an input end UINAnd an output terminal UOUTIn the meantime.
The quartz crystal oscillator circuit of the invention is based on the traditional crystal oscillator circuit, and a second inductor L2, a second resistor R2 and a third resistor R3 are introduced; compared with the existing quartz crystal oscillation circuit, the oscillation frequency of the circuit can reach hundreds of megahertz, which greatly expands the application range of the quartz crystal oscillator.
Drawings
FIG. 1 is a schematic diagram of a conventional crystal oscillator circuit configuration;
fig. 2 is a schematic diagram of a circuit structure of a quartz crystal oscillator provided by the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings in conjunction with the following detailed description. It should be understood that the description is intended to be exemplary only, and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
In order to solve the technical problem of low oscillation frequency of the traditional crystal oscillatorIt is clear that there is provided a quartz crystal oscillator circuit, as shown in fig. 2, comprising: the circuit comprises a first resistor R1, a second resistor R2, a third resistor R3, a first inductor L1, a second inductor L2, a first capacitor C1 and a second capacitor C2; the first resistor R1 and the first inductor L1 are connected in series and then are connected in series with a circuit formed by connecting the first capacitor C1 and the third resistor R3 in parallel to form a first branch circuit; the second capacitor C2 is connected in series with a circuit formed by connecting the second inductor L2 and the second resistor R2 in parallel to form a second branch circuit; the first branch and the second branch are connected in parallel and then connected to an input end UINAnd an output terminal UOUTIn the meantime.
The quartz crystal oscillator circuit of the invention is based on the traditional crystal oscillator circuit, and a second inductor L2, a second resistor R2 and a third resistor R3 are introduced; compared with the existing quartz crystal oscillation circuit, the oscillation frequency of the circuit can reach hundreds of megahertz, which greatly expands the application range of the quartz crystal oscillator.
It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.
Claims (1)
1. A quartz crystal oscillator circuit, comprising: the circuit comprises a first resistor R1, a second resistor R2, a third resistor R3, a first inductor L1, a second inductor L2, a first capacitor C1 and a second capacitor C2; the first resistor R1 and the first inductor L1 are connected in series and then are connected in series with a circuit formed by connecting the first capacitor C1 and the third resistor R3 in parallel to form a first branch circuit; the second capacitor C2 is connected in series with a circuit formed by connecting the second inductor L2 and the second resistor R2 in parallel to form a second branch circuit; the first branch and the second branch are connected in parallel and then connected to an input end UINAnd an output terminal UOUTIn the meantime.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710394955.3A CN107222182B (en) | 2017-05-30 | 2017-05-30 | Quartz crystal oscillator circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710394955.3A CN107222182B (en) | 2017-05-30 | 2017-05-30 | Quartz crystal oscillator circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107222182A CN107222182A (en) | 2017-09-29 |
| CN107222182B true CN107222182B (en) | 2020-11-27 |
Family
ID=59947957
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710394955.3A Expired - Fee Related CN107222182B (en) | 2017-05-30 | 2017-05-30 | Quartz crystal oscillator circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107222182B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09326612A (en) * | 1996-06-04 | 1997-12-16 | Atr Kodenpa Tsushin Kenkyusho:Kk | High frequency resonance circuit device |
| CN1710771A (en) * | 2005-07-08 | 2005-12-21 | 湖南大学 | Resonant-impedance type hybrid active electric filter and control method thereof |
| CN201243273Y (en) * | 2008-07-08 | 2009-05-20 | 广州市天马电讯科技有限公司 | Temperature complement voltage-control constant temperature crystal oscillator |
| CN104253587A (en) * | 2013-06-27 | 2014-12-31 | 上海海尔集成电路有限公司 | Crystal oscillator |
| CN204376833U (en) * | 2015-01-06 | 2015-06-03 | 南京理工海疆科技有限公司 | A kind of high frequency quartz oscillator |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3588742A (en) * | 1969-05-05 | 1971-06-28 | Bell Telephone Labor Inc | Lsa oscillator with first,second and third harmonic circuits for increased efficiency |
| JP2008005251A (en) * | 2006-06-22 | 2008-01-10 | Yoshinori Kanno | Oscillation circuit |
| CN102117354A (en) * | 2009-12-31 | 2011-07-06 | 中国科学院微电子研究所 | Piezoelectric crystal simulation engine |
| JP5861221B2 (en) * | 2010-09-14 | 2016-02-16 | 国立大学法人山梨大学 | Piezoelectric vibration circuit |
| CN106067762B (en) * | 2016-06-15 | 2019-06-28 | 泰凌微电子（上海）有限公司 | The crystal-oscillator circuit of fast start-up |
-
2017
- 2017-05-30 CN CN201710394955.3A patent/CN107222182B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09326612A (en) * | 1996-06-04 | 1997-12-16 | Atr Kodenpa Tsushin Kenkyusho:Kk | High frequency resonance circuit device |
| CN1710771A (en) * | 2005-07-08 | 2005-12-21 | 湖南大学 | Resonant-impedance type hybrid active electric filter and control method thereof |
| CN201243273Y (en) * | 2008-07-08 | 2009-05-20 | 广州市天马电讯科技有限公司 | Temperature complement voltage-control constant temperature crystal oscillator |
| CN104253587A (en) * | 2013-06-27 | 2014-12-31 | 上海海尔集成电路有限公司 | Crystal oscillator |
| CN204376833U (en) * | 2015-01-06 | 2015-06-03 | 南京理工海疆科技有限公司 | A kind of high frequency quartz oscillator |
Non-Patent Citations (1)
| Title |
|---|
| 低功耗低频快速起振电路的设计;赵毅强等;《北京工业大学学报》;20120731;第38卷(第7期);第1068-1072页 * |
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| Publication number | Publication date |
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| CN107222182A (en) | 2017-09-29 |
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Effective date of registration: 20201110 Address after: Room 1410, block a, No. l300, Shangcheng Avenue, Futian street, Yiwu City, Jinhua City, Zhejiang Province Applicant after: Zhejiang Chengcheng cultural goods Co.,Ltd. Address before: 410205 Fugu Linyu District, No. 408 Tongzipo West Road, Changsha High-tech Development Zone, Changsha City, Hunan Province, F19 Building 1804 Applicant before: CHANGSHA FANGXINGTENG ELECTRONIC TECHNOLOGY Co.,Ltd. |
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Effective date of registration: 20221213 Address after: 253000 South of the Outer Ring Road, Northwest of the North Head of Yingbin Road, Yucheng City, Dezhou City, Shandong Province Patentee after: SHANDONG HANGE POWER ENERGY TECHNOLOGY CO.,LTD. Address before: Room 1410, block a, l300 Shangcheng Avenue, Futian street, Yiwu City, Jinhua City, Zhejiang Province Patentee before: Zhejiang Chengcheng cultural goods Co.,Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201127 |