CN205945695U - High steady small -size oven controlled crystal oscillator of low phase noise - Google Patents
High steady small -size oven controlled crystal oscillator of low phase noise Download PDFInfo
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- CN205945695U CN205945695U CN201620635275.7U CN201620635275U CN205945695U CN 205945695 U CN205945695 U CN 205945695U CN 201620635275 U CN201620635275 U CN 201620635275U CN 205945695 U CN205945695 U CN 205945695U
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- thermostat
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Abstract
The utility model discloses a high steady small -size oven controlled crystal oscillator of low phase noise, including temperature compensated crystal oscillat and thermotank, temperature sensor is still installed to the inner wall of thermotank, and temperature sensor's output is connected with the thermostatic control module, and temperature compensated crystal oscillat includes NULL, and NULL's bottom mounting has ceramics base, and the top table posts crystal resonator, NULL's internal integration has oscillation circuit and digital temperature sensor, and oscillation circuit's power control end is connected with varactor, and oscillation circuit's output is connected with low -noise amplifier, and digital temperature sensor's output is connected with cubic letter internal integration 0 and presses the generator, and the internal integration 1 module is the internal integration 3 of internal integration 2 component, and the output is connected with internal integration 4 triode internal integration 5, rechargeable lithium -ion battery is still installed to the bottom of thermotank. The utility model provides a constant temperature environment has reduced the influence that the temperature variation brought, has improved the stability of oscillator.
Description
Technical field
The utility model is related to crystal oscillator field, specially a kind of high steady Low phase noise miniature constant temperature crystal oscillator.
Background technology
Quartz oscillator develops as the core devices of electronic equipment, the direction towards miniaturization, low-power consumption.Constant temperature
Crystal oscillator has the advantages that frequency stability of temperature height, phase noise are low, but its power consumption and volume all ratios are larger, and starts shooting
Need to preheat；And crystal oscillator of analog temperature compensation have the advantages that low in energy consumption, small volume, start can work, but its frequency
Rate temperature stability is in the less order of magnitude of wide temperature range difficult to reach.
Utility model content
For problem above, the utility model provides a kind of high steady Low phase noise miniature constant temperature crystal oscillator, power consumption body
Long-pending little, and frequency stability of temperature is good, can be with the problem in effectively solving background technology.
For achieving the above object, the utility model provides following technical scheme：A kind of high steady Low phase noise miniature constant temperature crystal
Oscillator, including temperature compensating crystal oscillator and thermostat, described temperature compensating crystal oscillator is welded on inside thermostat,
The inwall of described thermostat is also equipped with temperature sensor, and the output end of temperature sensor is connected with thermostatic control module, constant temperature
Control module is fixed on the outer wall of thermostat；Described temperature compensating crystal oscillator includes integrated chip, the bottom of integrated chip
It is fixed with base of ceramic, the top Surface Mount of integrated chip has crystal resonator；Electricity is vibrated in being internally integrated of described integrated chip
Road and digital temperature sensor, the frequency adjustable side of described oscillating circuit is connected with varactor, the output end of oscillating circuit
It is connected with low-noise amplifier, the output end of described digital temperature sensor is connected with cubic function voltage generator, three letters
The voltage output end of number voltage generator is connected to the voltage compensation end of crystal resonator.
As a kind of preferred technical scheme of the utility model, described thermostatic control module is bearing that voltage comparator is constituted
Feedback circuit, output end is connected with heating power transistor amplifier.
As a kind of preferred technical scheme of the utility model, described temperature sensor adopts negative tempperature coefficient thermistor
Make, and thermistor is connected to the inverting input of voltage comparator in thermostatic control module.
As a kind of preferred technical scheme of the utility model, the output end of described thermostatic control module is connected to thermostat
Power Control end, the bottom of thermostat is also equipped with charged lithium cells.
Compared with prior art, the beneficial effects of the utility model are：The steady Low phase noise miniature constant temperature crystal oscillator of this height,
By arranging thermostatic control module, thermostat and thermostatic control realized by temperature sensor it is ensured that steady temperature environment；Setting three times
Function voltage generator, realizes analog temperature compensation；Setting low-noise amplifier, improves output signal strength and reduces letter simultaneously
Number noise；Setting charged lithium cells, using integrated chip, reduce whole device volume and weight, facilitate implementation integrated；This dress
Put structure simple, power consumption small volume, frequency stability of temperature is good, is suitable to promote the use of.
Brief description
Fig. 1 is the utility model structural representation；
Fig. 2 is temperature compensating crystal oscillator structure schematic diagram；
Fig. 3 is thermostatic control modular circuit schematic diagram.
In figure：1- temperature compensating crystal oscillator；2- thermostat；3- temperature sensor；4- thermostatic control module；5- is integrated
Chip；6- base of ceramic；7- crystal resonator；8- oscillating circuit；9- varactor；10- low-noise amplifier；11- numeral
Temperature sensor；12- cubic function voltage generator；13- voltage comparator；14- heating power transistor amplifier；15-
Charged lithium cells.
Specific embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out
Clearly and completely description is it is clear that described embodiment is only a part of embodiment of the utility model rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of making creative work
The every other embodiment being obtained, broadly falls into the scope of the utility model protection.
Embodiment：
Refer to Fig. 1 to Fig. 3, the utility model provides a kind of technical scheme：A kind of high steady Low phase noise miniature constant temperature crystal
Oscillator, including temperature compensating crystal oscillator 1 and thermostat 2, described temperature compensating crystal oscillator 1 is welded on thermostat 2
Inside, the inwall of described thermostat 2 is also equipped with temperature sensor 3, and the output end of temperature sensor 3 is connected with thermostatic control mould
Block 4, thermostatic control module 4 is fixed on the outer wall of thermostat 2；Described temperature compensating crystal oscillator 1 includes integrated chip 5, collection
The bottom becoming chip 5 is fixed with base of ceramic 6, and the top Surface Mount of integrated chip 5 has crystal resonator 7；Described integrated chip 5
Oscillating circuit 8 and digital temperature sensor 11 have been internally integrated it, the frequency adjustable side of described oscillating circuit 8 is connected with transfiguration two pole
Pipe 9, the output end of oscillating circuit 8 is connected with low-noise amplifier 10, and the output end of described digital temperature sensor 11 is connected with
Cubic function voltage generator 12, the voltage output end of cubic function voltage generator 12 is connected to the voltage of crystal resonator 7
Compensate end；
Described thermostatic control module 4 is the negative-feedback circuit that voltage comparator 13 is constituted, and output end is connected with heating power
Transistor amplifier 14；Described temperature sensor 3 is made using negative tempperature coefficient thermistor, and thermistor is connected to perseverance
The inverting input of voltage comparator 13 in warm control module 4；The output end of described thermostatic control module 4 is connected to thermostat 2
Power Control end, the bottom of thermostat 2 is also equipped with charged lithium cells 15.
Operation principle of the present utility model：Described thermostat 2 provides a sealing stationary temperature environment, thus reducing temperature
Degree compensated crystal oscillator 1 changes, because of environment temperature, the temperature drift producing；Described integrated chip 5 is temperature compensating crystal oscillator 1
Main working parts, integrated chip 5 is fixed in thermostat 2 described base of ceramic 6, can play certain thermal insulation and make
With reducing the impact of temperature change, described crystal resonator 7 controls the frequency temperature of whole temperature compensating crystal oscillator 1 special
Property；Described oscillating circuit 8 produces oscillator signal, and described varactor 9 controls oscillation amplitude, described digital temperature sensor 11
The current environment temperature of detection directly output digit signals are to the input of cubic function voltage generator 12, cubic function electricity
Pressure generator 12 produces temperature-compensated voltage according to the data of input, and temperature-compensated voltage is input to the voltage of crystal resonator 7
Control end realizes temperature-compensating；Described temperature sensor 3 is made up of thermistor, and according to the change of environment temperature, resistance value is sent out
Raw change, the input voltage of the inverting input of voltage comparator 13 in thermostatic control module 4 changes therewith, leads to voltage ratio
Change compared with the output voltage of device 13, the output voltage of change is input to heating power transistor amplifier 14, change output temperature
Degree, thus realize temperature adjustment；Described charged lithium cells 15 are powered for whole device, big and volume is light using lithium battery capacity
Little.
The steady Low phase noise miniature constant temperature crystal oscillator of this height, is passed by arranging thermostatic control module 4, thermostat 2 and temperature
Sensor 3 realizes thermostatic control it is ensured that steady temperature environment；Setting cubic function voltage generator 12, realizes analog temperature compensation；
Setting low-noise amplifier 10, improves output signal strength and reduces signal noise simultaneously；Setting charged lithium cells 15, using collection
Become chip 5, reduce whole device volume and weight, facilitate implementation integrated；This apparatus structure is simple, power consumption small volume, frequency
Temperature stability is good, is suitable to promote the use of.
The foregoing is only preferred embodiment of the present utility model, not in order to limit the utility model, all this
Any modification, equivalent and improvement made within the spirit of utility model and principle etc., should be included in the utility model
Protection domain within.
Claims (4)
1. a kind of high steady Low phase noise miniature constant temperature crystal oscillator, including temperature compensating crystal oscillator（1）And thermostat（2）,
Described temperature compensating crystal oscillator（1）It is welded on thermostat（2）Internal it is characterised in that：Described thermostat（2）Inwall also
Temperature sensor is installed（3）, temperature sensor（3）Output end be connected with thermostatic control module（4）, thermostatic control module
（4）It is fixed on thermostat（2）Outer wall；Described temperature compensating crystal oscillator（1）Including integrated chip（5）, integrated chip（5）
Bottom be fixed with base of ceramic（6）, integrated chip（5）Top Surface Mount have crystal resonator（7）；Described integrated chip（5）
Be internally integrated oscillating circuit（8）And digital temperature sensor（11）, described oscillating circuit（8）Frequency adjustable side be connected with
Varactor（9）, oscillating circuit（8）Output end be connected with low-noise amplifier（10）, described digital temperature sensor
（11）Output end be connected with cubic function voltage generator（12）, cubic function voltage generator（12）Voltage output end even
It is connected to crystal resonator（7）Voltage compensation end.
2. a kind of high steady Low phase noise miniature constant temperature crystal oscillator according to claim 1 it is characterised in that：Described constant temperature
Control module（4）For voltage comparator（13）The negative-feedback circuit constituting, output end is connected with heating power triode and amplifies electricity
Road（14）.
3. a kind of high steady Low phase noise miniature constant temperature crystal oscillator according to claim 1 it is characterised in that：Described temperature
Sensor（3）Made using negative tempperature coefficient thermistor, and thermistor is connected to thermostatic control module（4）Middle voltage ratio is relatively
Device（13）Inverting input.
4. a kind of high steady Low phase noise miniature constant temperature crystal oscillator according to claim 1 it is characterised in that：Described constant temperature
Control module（4）Output end be connected to thermostat（2）Power Control end, thermostat（2）Bottom be also equipped with charging lithium
Battery（15）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620635275.7U CN205945695U (en) | 2016-06-24 | 2016-06-24 | High steady small -size oven controlled crystal oscillator of low phase noise |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620635275.7U CN205945695U (en) | 2016-06-24 | 2016-06-24 | High steady small -size oven controlled crystal oscillator of low phase noise |
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| Publication Number | Publication Date |
|---|---|
| CN205945695U true CN205945695U (en) | 2017-02-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201620635275.7U Active CN205945695U (en) | 2016-06-24 | 2016-06-24 | High steady small -size oven controlled crystal oscillator of low phase noise |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114938215A (en) * | 2022-07-22 | 2022-08-23 | 深圳市英特瑞半导体科技有限公司 | Crystal oscillator and manufacturing method thereof |
-
2016
- 2016-06-24 CN CN201620635275.7U patent/CN205945695U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114938215A (en) * | 2022-07-22 | 2022-08-23 | 深圳市英特瑞半导体科技有限公司 | Crystal oscillator and manufacturing method thereof |
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