CN109687865A - A kind of big pressure controlled constant tempeature crystal oscillator of small size - Google Patents
A kind of big pressure controlled constant tempeature crystal oscillator of small size Download PDFInfo
- Publication number
- CN109687865A CN109687865A CN201811461660.4A CN201811461660A CN109687865A CN 109687865 A CN109687865 A CN 109687865A CN 201811461660 A CN201811461660 A CN 201811461660A CN 109687865 A CN109687865 A CN 109687865A
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- China
- Prior art keywords
- circuit
- small size
- tempeature
- oscillation
- crystal oscillator
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- 239000013078 crystal Substances 0.000 title claims abstract description 39
- 230000010355 oscillation Effects 0.000 claims abstract description 28
- 238000010438 heat treatment Methods 0.000 claims abstract description 25
- 230000000087 stabilizing effect Effects 0.000 claims abstract description 20
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000003990 capacitor Substances 0.000 claims description 7
- 239000011889 copper foil Substances 0.000 claims description 6
- 229910052802 copper Inorganic materials 0.000 abstract description 2
- 239000010949 copper Substances 0.000 abstract description 2
- 230000005611 electricity Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000036760 body temperature Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION, OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
- H03L1/00—Stabilisation of generator output against variations of physical values, e.g. power supply
- H03L1/02—Stabilisation of generator output against variations of physical values, e.g. power supply against variations of temperature only
- H03L1/022—Stabilisation of generator output against variations of physical values, e.g. power supply against variations of temperature only by indirect stabilisation, i.e. by generating an electrical correction signal which is a function of the temperature
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION, OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
- H03L1/00—Stabilisation of generator output against variations of physical values, e.g. power supply
- H03L1/02—Stabilisation of generator output against variations of physical values, e.g. power supply against variations of temperature only
- H03L1/04—Constructional details for maintaining temperature constant
Abstract
The present invention relates to a kind of big pressure controlled constant tempeature crystal oscillator of small size, this constant temperature oscillator includes the voltage-controlled adjustment module of amplifying circuit, super large of the oscillation module of high stable, thermostat heating module, the Voltage stabilizing module of low noise high stable and adjustment signal.Oscillating circuit uses gate circuit mode of oscillation, additional frequency-selective network.Temperature control route covers copper to oscillator circuit heated for controlling temperature by PCB, is also provided with temperature characterisitic compensating cell in temperature control route.Pressure stabilizing route using small size, low noise, high stable linear LDO.Voltage-controlled adjustment module selects the biggish varactor of V-C.The volume of the invention is 14*9*6 (mm), and frequency range is 10 ~ 100M, typical frequencies 40M.
Description
Technical field
The present invention is a kind of big pressure controlled constant tempeature crystal oscillator of small size, belongs to crystal oscillator technologies field.
Background technique
With the continuous development of electronic technology, portable product is more and more favored.The device encapsulated greatly is due to volume
Reason has been gradually backed out market.Crystal oscillator is as a kind of important reference source, and not only the technical indicator current to its has stringent
It is required that also having high requirement to its volume, service life, stability.Using the design of double-layer structure, can effectively save
Space.Large traction ability crystal and the biggish varactor of V-C value can satisfy the voltage-controlled demand of super large.But it is dry between component
It disturbs, configuration, parts selection remain difficult point.
Summary of the invention
Proposed by the present invention is a kind of big pressure controlled constant tempeature crystal oscillator of small size, and its object is to shake for existing crystal
Swinging the interference between component existing for device, configuration and parts selection has the defects of difficult point, and it is big to propose a kind of small size
Encapsulation can be reduced to 14*9*6 (mm) by pressure controlled constant tempeature crystal oscillator under the premise of not influencing oscillator character parameter, voltage-controlled
Increase to 100PPM.
Technical solution of the invention:
A kind of big pressure controlled constant tempeature crystal oscillator of small size, including Voltage stabilizing module 1, Signal Regulation amplifying circuit 2, oscillating circuit 3,
Heating and temperature-adjusting circuit 4, adjustment module 5, oscillation and temperature control PCB and pressure stabilizing and output PCB, 1 voltage output of Voltage stabilizing module
End is separately connected the voltage input end of Signal Regulation amplifying circuit 2, oscillating circuit 3, heating and temperature-adjusting circuit 4, oscillating circuit 3
Frequency signal output end connection signal adjusts 2 frequency signal input end of amplifying circuit.
Beneficial effects of the present invention:
1) design uses integrated device, does not influence performance while effectively reducing space；
2) crystal uses 6035 surface mounting crystals, and direct patch operation can be carried out with chip mounter, without attachment by hand and welding, letter
Processing technology is changed.High q-factor, 6035 patch resonators of large traction ability cooperate the voltage-controlled adjustment module of super large, may be implemented
The voltage-controlled requirement of 100ppm；
3) using the double-deck PCB construction, interfered between component it is small, be conducive to configuration, parts selection, rationally utilizing space
After, product temperature characteristic can be significantly improved.
Detailed description of the invention
Attached drawing 1 is the structural schematic diagram of the big pressure controlled constant tempeature crystal oscillator of small size.
Attached drawing 2 is the circuit diagram of oscillation and temperature control PCB.
Attached drawing 3 is pressure stabilizing and the circuit diagram for exporting PCB.
Attached drawing 4 is each module connection diagram of the big pressure controlled constant tempeature crystal oscillator of size.
1 it is Voltage stabilizing module in attached drawing, 2 be Signal Regulation amplifying circuit, 3 be oscillating circuit, 4 is heating and temperature-adjusting circuit, 5
It is adjustment module.
Specific embodiment
A kind of big pressure controlled constant tempeature crystal oscillator of small size, including Voltage stabilizing module 1, Signal Regulation amplifying circuit 2, oscillation electricity
Road 3, heating and temperature-adjusting circuit 4, adjustment module 5, oscillation and temperature control PCB and pressure stabilizing and output PCB, 1 voltage of Voltage stabilizing module
Output end is separately connected the voltage input end of Signal Regulation amplifying circuit 2, oscillating circuit 3, heating and temperature-adjusting circuit 4, oscillation electricity
The frequency signal output end connection signal on road 3 adjusts 2 frequency signal input end of amplifying circuit
The oscillating circuit 3, heating and temperature-adjusting circuit 4 are placed on oscillation and temperature control PCB, and the oscillation and temperature control PCB use four
Layer PCB copper foil, wherein two, 3 two layers of floor file.
The heating and temperature-adjusting circuit 4 are placed in oscillation and temperature control PCB reverse side, and crystal is mounted on oscillation and the front temperature control PCB.
The Voltage stabilizing module 1 selects ultra-low noise, wide scope integrated regulator, can maximally reduce space.
The power supply chip of high stable, low noise also has greatly improved to the phase noise of product.Signal Regulation amplifying circuit 2 is selected
Low noise, low-power consumption fairchild company NC7SWZU04 chip.
The oscillating circuit 3 includes crystal, gate oscillator, frequency-selective network and capacitor, and door oscillating circuit can simplify line
While road, not influencing characterisitic.Wherein, frequency-selective network uses LC frequency-selecting, and the L2 inductance, C08 capacitor in frequency-selective network directly connect
Touching oscillation and temperature control PCB copper foil.
The heating and temperature-adjusting circuit 4 include heating module, operational amplifier, current limliting module and bridge circuit；It is described to add
Thermal modules include R22 resistance, R23 resistance, Q2 triode, and operational amplifier includes IC2, and current limliting module includes Q1 triode, TM5
Thermistor, bridge circuit include R11 resistance, R12 resistance, R13 resistance, R14 resistance, TM4 thermistor.
The adjustment module 5 selects that sensitive to voltage change, capacitance variation range is big, pressure voltage is high, HITACHI company
HVC359 varactor.
Crystal selects high q-factor, 6035 patch resonators of large traction ability, cooperates the voltage-controlled adjustment module of super large, Ke Yishi
The voltage-controlled requirement of existing 100ppm.Direct patch operation can be carried out with chip mounter, without attachment by hand and welding, simplify processing
Technique.
Frequency-selective network uses LC frequency-selecting, and temperature control route uses bridge-type temperature control route, and operational amplifier selects small size
OPA348, other resistor-capacitor units use 0402 device.
Pio chip select the stronger IC of carrying load ability, it can be achieved that different loads lower frequency stability.
The crystal oscillator is having a size of 14*9*6mm.
Explanation is further explained to technical solution of the present invention with reference to the accompanying drawing.
Attached drawing 1, attached drawing 4, the constant-temperature crystal oscillator of small size low-power consumption are compareed, it is characterized in that including low noise high stable
Voltage stabilizing module 1, Signal Regulation amplifying circuit 2, the oscillating circuit 3 of high stable, heating and temperature-adjusting circuit 4, the voltage-controlled adjustment of super large
Module 5, wherein Voltage stabilizing module 1 provides stable voltage to Signal Regulation amplifying circuit 2, the oscillation module 3 of high stable, heating
And temperature-adjusting circuit 4, after heating and the energization of temperature-adjusting circuit 4, shell body temperature is constant at 90 DEG C, and the oscillation module 3 of high stable exists
Stable frequency signal is exported after energization to Signal Regulation amplifying circuit 2, signal is defeated after the amplification of Signal Regulation amplifying circuit 2
Out, the voltage-controlled adjustment module 5 of super large is in use, the load electricity for changing 3 route of oscillation module of high stable by changing external voltage
Hold, realizes the voltage-controlled ability of super large.
Using the double-deck PCB construction, include one piece of oscillation and temperature control PCB and one piece of pressure stabilizing and output PCB.
The oscillator circuit and temperature control route of the oscillating circuit 3, heating and temperature-adjusting circuit 4 are placed in oscillation and temperature control PCB
On, the wiring board of oscillator circuit and temperature control route uses 4 layers of PCB, intermediate two, 3 two layers of floor file, and copper foil in route replaces
Traditional copper billet reduces space, and crystal is mounted on oscillation and the front temperature control PCB, and copper foil can heat crystal, guarantees
Its temperature is stablized.
Heating and temperature-adjusting circuit 4 are placed in oscillation and temperature control PCB reverse side, and heating temperature sets 90 DEG C, and thermal current is followed toward rising
Ring renews, and entire space is constant at 90 DEG C.
Attached drawing 2 is compareed, oscillating circuit includes crystal XT1, gate oscillator, frequency-selective network L2 and C08 capacitor.Crystal is by piezoelectricity
Effect generates signal after powered up, and by frequency-selective network and gate oscillator, oscillation generates stable signal.Voltage-controlled adjustment module
Include D1, D2, C05, R1, R2, R3, R6 and R8.Thermostat module includes bridge circuit R11, R12, R13, R14, TM4, operation
Amplifier IC2, current limliting module Q1, TM5, heating module R22, R23, Q2.After temperature control route connects electricity, current limliting module is by starup current
It is limited to zone of reasonableness, bridge circuit and operational amplifier cooperation output low and high level, whether control heating module works.
Attached drawing 3 is compareed, pressure stabilizing route selects ultra-low noise, wide scope voltage-stablizer, cooperates filter capacitor, by input electricity
Rear class route is given in output after pressure pressure stabilizing.Signal Regulation amplifying circuit selects low noise, low-power chip, can be by signal output amplitude
Amplify the requirement that touches the mark.
Claims (9)
1. a kind of big pressure controlled constant tempeature crystal oscillator of small size, it is characterized in that including Voltage stabilizing module, Signal Regulation amplifying circuit, vibration
Swing circuit, heating and temperature-adjusting circuit, adjustment module, oscillation and temperature control PCB and pressure stabilizing and output PCB, the Voltage stabilizing module voltage
Output end is separately connected the voltage input end of Signal Regulation amplifying circuit, oscillating circuit, heating and temperature-adjusting circuit, oscillating circuit
Frequency signal output end connection signal adjusts amplifying circuit frequency signal input end.
2. the big pressure controlled constant tempeature crystal oscillator of a kind of small size according to claim 1, it is characterized in that the oscillating circuit,
Heating and temperature-adjusting circuit are placed on oscillation and temperature control PCB, and the oscillation and temperature control PCB use four layers of PCB copper foil, wherein two, three
Two layers of floor file.
3. the big pressure controlled constant tempeature crystal oscillator of a kind of small size according to claim 1, it is characterized in that the heating and control
Circuit temperature is placed in oscillation and temperature control PCB reverse side, and crystal is mounted on oscillation and the front temperature control PCB.
4. the big pressure controlled constant tempeature crystal oscillator of a kind of small size according to claim 1, it is characterized in that the Voltage stabilizing module
Select ultra-low noise, the integrated regulator of wide scope, Signal Regulation amplifying circuit selects low noise, low-power consumption
NC7SWZU04 chip.
5. the big pressure controlled constant tempeature crystal oscillator of a kind of small size according to claim 1, it is characterized in that the oscillating circuit
Including crystal, gate oscillator, frequency-selective network and capacitor, wherein frequency-selective network uses LC frequency-selecting, L2 inductance in frequency-selective network,
C08 capacitor directly contacts oscillation and temperature control PCB copper foil.
6. the big pressure controlled constant tempeature crystal oscillator of a kind of small size according to claim 1, it is characterized in that the heating and control
Circuit temperature includes heating module, operational amplifier, current limliting module and bridge circuit；The heating module includes R22 resistance, R23
Resistance, Q2 triode, operational amplifier include IC2, and current limliting module includes Q1 triode, TM5 thermistor, and bridge circuit includes
R11 resistance, R12 resistance, R13 resistance, R14 resistance, TM4 thermistor.
7. the big pressure controlled constant tempeature crystal oscillator of a kind of small size according to claim 1, it is characterized in that the adjustment module
Selection is sensitive to voltage change, capacitance variation range is big, pressure voltage is high, the HVC359 varactor of HITACHI company.
8. the big pressure controlled constant tempeature crystal oscillator of a kind of small size according to claim 1, it is characterized in that the crystal oscillation
Device is having a size of 14 mm × 9 mm × 6mm.
9. the big pressure controlled constant tempeature crystal oscillator of a kind of small size according to claim 1, it is characterized in that the crystal oscillation
Device selects 6035 surface mounting crystals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811461660.4A CN109687865A (en) | 2018-12-02 | 2018-12-02 | A kind of big pressure controlled constant tempeature crystal oscillator of small size |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811461660.4A CN109687865A (en) | 2018-12-02 | 2018-12-02 | A kind of big pressure controlled constant tempeature crystal oscillator of small size |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109687865A true CN109687865A (en) | 2019-04-26 |
Family
ID=66185188
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811461660.4A Pending CN109687865A (en) | 2018-12-02 | 2018-12-02 | A kind of big pressure controlled constant tempeature crystal oscillator of small size |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109687865A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002135051A (en) * | 2000-10-30 | 2002-05-10 | Toyo Commun Equip Co Ltd | Piezoelectric oscillator |
| JP2003046334A (en) * | 2001-07-27 | 2003-02-14 | Nec Microsystems Ltd | Temperature compensation type crystal oscillator |
| CN102064763A (en) * | 2010-12-08 | 2011-05-18 | 郑州原创电子科技有限公司 | Voltage-controlled constant-temperature crystal oscillating circuit |
| CN102088274A (en) * | 2010-12-08 | 2011-06-08 | 郑州原创电子科技有限公司 | Production method of high-fundamental frequency crystal resonator |
| CN202435343U (en) * | 2011-12-20 | 2012-09-12 | 郑州原创电子科技有限公司 | Small voltage-controlled constant temperature crystal oscillation circuit |
| CN103607198A (en) * | 2013-11-27 | 2014-02-26 | 武汉海创电子股份有限公司 | 100MHz high-frequency constant temperature crystal oscillator for spaceflight |
| CN204068868U (en) * | 2014-09-10 | 2014-12-31 | 常州国光数据通信有限公司 | A kind of constant temperature annular overtone crystal oscillator |
| CN105610402A (en) * | 2015-12-17 | 2016-05-25 | 南京中电熊猫晶体科技有限公司 | Small-size and low-power consumption constant temperature crystal oscillator |
-
2018
- 2018-12-02 CN CN201811461660.4A patent/CN109687865A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002135051A (en) * | 2000-10-30 | 2002-05-10 | Toyo Commun Equip Co Ltd | Piezoelectric oscillator |
| JP2003046334A (en) * | 2001-07-27 | 2003-02-14 | Nec Microsystems Ltd | Temperature compensation type crystal oscillator |
| CN102064763A (en) * | 2010-12-08 | 2011-05-18 | 郑州原创电子科技有限公司 | Voltage-controlled constant-temperature crystal oscillating circuit |
| CN102088274A (en) * | 2010-12-08 | 2011-06-08 | 郑州原创电子科技有限公司 | Production method of high-fundamental frequency crystal resonator |
| CN202435343U (en) * | 2011-12-20 | 2012-09-12 | 郑州原创电子科技有限公司 | Small voltage-controlled constant temperature crystal oscillation circuit |
| CN103607198A (en) * | 2013-11-27 | 2014-02-26 | 武汉海创电子股份有限公司 | 100MHz high-frequency constant temperature crystal oscillator for spaceflight |
| CN204068868U (en) * | 2014-09-10 | 2014-12-31 | 常州国光数据通信有限公司 | A kind of constant temperature annular overtone crystal oscillator |
| CN105610402A (en) * | 2015-12-17 | 2016-05-25 | 南京中电熊猫晶体科技有限公司 | Small-size and low-power consumption constant temperature crystal oscillator |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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Application publication date: 20190426 |