CN209170309U - A kind of micromation constant-temperature crystal oscillator - Google Patents
A kind of micromation constant-temperature crystal oscillator Download PDFInfo
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- CN209170309U CN209170309U CN201822152573.2U CN201822152573U CN209170309U CN 209170309 U CN209170309 U CN 209170309U CN 201822152573 U CN201822152573 U CN 201822152573U CN 209170309 U CN209170309 U CN 209170309U
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- pcb board
- temperature
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- micromation
- crystal resonator
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Abstract
The utility model discloses a kind of micromation constant-temperature crystal oscillator, including metal base, the first pcb board and the second pcb board being welded in by component draw pin on metal base；Include the crystal resonator for being welded in the first pcb board bottom surface on first pcb board, is welded on the temperature-adjusting circuit and voltage regulator circuit interconnected of the first pcb board top surface, the heating power pipe for being installed on the first pcb board top surface and connecting with temperature-adjusting circuit；It include low noise oscillating circuit interconnected and radio frequency output amplifier on second pcb board；Wherein, first pcb board is electrically connected by the pin of crystal resonator with the realization of the second pcb board.By above-mentioned design, the utility model has smaller volume, brings lower dissipated power, and debugging is simple, using flexible, has stronger market competition potentiality, is suitble to promote and apply.
Description
Technical field
The utility model relates to a kind of crystal oscillators, specifically, being to be related to a kind of micromation constant-temperature crystal oscillator.
Background technique
With the acceleration of electronics miniaturization process, electronic component Composite and integrated paces are also being accelerated.
" heart " of the crystal oscillator as communication electronic equipment, has a wide range of applications in fields such as communication, test, time references,
Equally there is the development trend of micromation, low-power consumption, high-precision, high power etc..Constant-temperature crystal oscillator is that performance is most in all crystal oscillator types
The status for having other kinds of crystal oscillator that can not replace for outstanding one kind, especially frequency stability and phase noise.Extensively
Applied to fields such as communication base station, time synchronization, test equipment, electronic countermeasure, radars.
Constant-temperature crystal oscillator is that one kind at least can control the quartz crystal that quartz crystal unit temperature is held essentially constant
Oscillator.It utilizes thermodynamic principles, quartz crystal or whole oscillating circuits is placed in thermostat to improve frequency temperature
Characteristic.Since constant-temperature crystal oscillator includes at least temperature-control circuit, composite nalysis, oscillator-amplification circuit, circuit structure is opposite
Complexity is difficult to accomplish that volume minimizes.Conventional miniature constant temperature crystal oscillator size is generally 50.8*50.8mm, 38.1* at present
38.1mm, 25.4*25.4mm, 20.32*20.32mm, the constant-temperature crystal oscillator for the minimum volume that existing market can be found are standard
DIP14 encapsulation, having a size of 20.3*13.6mm, such product majority uses the SMT quartz resonance of the lower small size of performance indicator
Device, performance indicator and large scale constant-temperature crystal oscillator have different degrees of deterioration.
Utility model content
The purpose of this utility model is to provide a kind of micromation constant-temperature crystal oscillators, and it is permanent mainly to solve existing high target
Warm crystal oscillator volume is larger, the high problem of power consumption.
To achieve the above object, the technical solution adopted in the utility model is as follows:
A kind of micromation constant-temperature crystal oscillator, including metal base, are welded on metal base by component draw pin
First pcb board and the second pcb board；It include the crystal resonator for being welded in the first pcb board bottom surface, welding on first pcb board
Temperature-adjusting circuit and voltage regulator circuit interconnected in the first pcb board top surface, be welded in 1 top surface of the first pcb board and with temperature control electricity
The heating power pipe of road connection；It include low noise oscillating circuit interconnected and radio frequency output amplification on second pcb board
Circuit；Wherein, first pcb board is electrically connected by the pin of crystal resonator with the realization of the second pcb board.
Further, the temperature-adjusting circuit has temperature sensor, the temperature sensor and crystal resonator close thermal
Connection.
Further, it there are two the heating power pipes, is set to the opposite of crystal resonator and is located at the first pcb board side
Edge, the heating power pipe are realized by the metallization VIA and crystal resonator gathered on the first pcb board and are thermally connected.
Preferably, the crystal resonator and metal base clearance distance are 0.5mm；First pcb board and the second pcb board
Between clearance distance be 2mm.
Preferably, the crystal resonator uses TO-5 encapsulation, high q-factor, the vacuum cold welding type of low frequency ageing rate
Quartz-crystal resonator.
Preferably, the shell of the crystal resonator is electrically.
Preferably, the heating power pipe uses positive-negative-positive power transistor, the heat dissipation pole collector C is also ground network,
Same temperature gradient is maintained at crystal resonator.
Compared with prior art, the utility model has the following beneficial effects:
(1) the utility model uses the vacuum cold welding quartz-crystal resonator of industry high target, can guarantee that product is long
Short-term frequency stability index and phase noise specifications and conventional large volume constant-temperature crystal oscillator product index are in phase same level.
(2) the utility model realizes the dimension layout of circuit 3 in such a way that two pcb boards are overlapped, reach using high target,
Size reduction as far as possible while large volume crystal, to realize the mesh for keeping constant-temperature crystal oscillator excellent technique index under ultra-small volume
's.
(3) the utility model can utilize the product useful space to greatest extent, realize high density fabric swatch, finished product product ruler
It is very little to can reduce 12mm*12mm, compared to the 20.3*13.6mm size of standard DIP14 encapsulating products on the market at present, applying
When can save nearly 50% space, simultaneously because smaller volume, the advantages of bringing more low dissipation power.
Detailed description of the invention
Fig. 1 is that the utility model 3 ties up structural schematic diagram.
Fig. 2 is the temperature-adjusting circuit schematic diagram of the non-jointing temp sensor of the utility model.
Wherein, the corresponding title of appended drawing reference are as follows:
The first pcb board of 1-, the second pcb board of 2-, 3- crystal resonator, 4- heating power pipe, 5- metal base, 6- component draw
Needle.
Specific embodiment
The utility model is described in further detail with embodiment for explanation with reference to the accompanying drawing, and the mode of the utility model includes
But it is not limited only to following embodiment.
Embodiment
As shown in Figure 1, 2, a kind of micromation constant-temperature crystal oscillator disclosed by the utility model, including metal base 5 lead to
Cross the first pcb board 1 and the second pcb board 2 that component draw pin 6 is welded on metal base 5；It include welding on first pcb board 1
Crystal resonator 3 in 1 bottom surface of the first pcb board is welded on temperature-adjusting circuit interconnected and the pressure stabilizing of 1 top surface of the first pcb board
Circuit, the heating power pipe 4 for being welded in 1 top surface of the first pcb board and being connect with temperature-adjusting circuit；It include phase on second pcb board 2
The low noise oscillating circuit and radio frequency output amplifier to connect；Wherein, first pcb board 1 passes through crystal resonator 3
Pin is electrically connected with the realization of the second pcb board 2.
Wherein, the temperature-adjusting circuit includes operational amplifier U1, and one end is connected with the cathode of operational amplifier U1 after series connection
And resistance R11, R14 that the other end is connected with reference voltage VREF, one end is connected with the anode of operational amplifier U1 and the other end
The resistance R12 being connected with reference voltage VREF, one end is connected with the anode of operational amplifier U1 and the other end and the other end are grounded
Resistance R13, one end is connected and resistance R38, the capacitor C7 of other end ground connection with the anode of operational amplifier U1 after series connection, in parallel
Resistance R10, the capacitor C11 that one end is connected with the cathode of operational amplifier U1 afterwards, one end is connected with the cathode of operational amplifier U1
And the resistance R19 of other end ground connection, it is in parallel with resistance R10, capacitor C11 after the resistance R9 that is connected of the other end, base stage and resistance R9
The other end be connected and emitter ground connection heating power transistor Q1, one end be connected with the collector of heating power transistor Q1 and
The other end connects the resistance R7 of power supply VCC, and one end and capacitor C7 are connected and the other end connect the resistance R4 of power supply VCC, and one terminates
The capacitor C9 on ground and other end connection power supply VCC, the resistance R1 being connected with the output end of operational amplifier U1, base stage and resistance R1
The other end be connected and emitter ground connection heating power transistor Q3, one end be connected with the collector of heating power transistor Q2 and
The other end connects the resistance R8 of power supply VCC, resistance R5, the capacitor C8 that one end is connected with power supply VCC after series connection and the other end is grounded；
Wherein, the voltage input end of operational amplifier U1 is connected with power supply VCC, voltage output end ground connection.
The temperature sensor and crystal resonator 3 of the temperature-adjusting circuit are placed in 1 identical faces of the first pcb board and close thermal connects
It connects.
When being placed in structure, there are the gaps of 0.5mm between the shell and metal base 5 of crystal resonator 3, guarantee crystal
There is good thermal insulation between resonator 3 and metal base 5；There are two heating power pipes 4, using positive-negative-positive power transistor,
Radiate the pole collector C also network, is maintained at same temperature gradient with crystal resonator 3, and be respectively placed in 1 side of the first pcb board
Simultaneously there is certain space distance on edge, passes through the metallization VIA gathered on the first pcb board 1 and crystal resonator 3 is realized and is thermally connected；Surely
Volt circuit is placed in the side of temperature-adjusting circuit, and the voltage after stablizing is connected to the second pcb board 2 by the pin of crystal resonator 3.Its
In, the shell of the crystal resonator is electrically.
By above-mentioned design, the utility model can utilize the product useful space to greatest extent, realize high density fabric swatch,
Finished product product size can reduce 12mm*12mm, compared to the 20.3*13.6mm of standard DIP14 encapsulating products on the market at present
Size can save nearly 50% space in application, simultaneously because smaller volume, the advantages of bringing more low dissipation power,
In the line of production of small size constant-temperature crystal oscillator, there is substantive features and progress.And the utility model structure is simple, design
Rationally, debugging is simple, using flexible, has stronger market competition potentiality, is suitble to promote and apply.
Above-described embodiment is only one of preferred embodiments of the present invention, should not be taken to limit the utility model
Protection scope, as long as the utility model body design thought and mentally make have no the change of essential meaning or profit
Color, it is solved the technical issues of it is still consistent with the utility model, the protection scope of the utility model should all be included in
Within.
Claims (7)
1. a kind of micromation constant-temperature crystal oscillator, which is characterized in that including metal base (5), welded by component draw pin (6)
In the first pcb board (1) and the second pcb board (2) on metal base (5)；It include being welded in first on first pcb board (1)
The crystal resonator (3) of pcb board (1) bottom surface is welded on the temperature-adjusting circuit interconnected and pressure stabilizing of the first pcb board (1) top surface
Circuit, the heating power pipe (4) for being welded in the first pcb board (1) top surface and being connect with temperature-adjusting circuit；On second pcb board (2)
Including low noise oscillating circuit interconnected and radio frequency output amplifier；Wherein, first pcb board (1) passes through crystal
The pin of resonator (3) is realized with the second pcb board (2) and is electrically connected.
2. a kind of micromation constant-temperature crystal oscillator according to claim 1, which is characterized in that the temperature-adjusting circuit has
Temperature sensor, the temperature sensor and crystal resonator (3) are closely thermally connected.
3. a kind of micromation constant-temperature crystal oscillator according to claim 2, which is characterized in that the heating power pipe
(4) it there are two, is set to the opposite of crystal resonator (3) and is located at the first pcb board (1) edge, the heating power pipe (4) is logical
It crosses the metallization VIA gathered on the first pcb board (1) and crystal resonator (3) is realized and are thermally connected.
4. a kind of micromation constant-temperature crystal oscillator according to claim 3, which is characterized in that the crystal resonator
It (3) is 0.5mm with metal base (5) clearance distance；Clearance distance between first pcb board (1) and the second pcb board (2) is
2mm。
5. a kind of micromation constant-temperature crystal oscillator according to claim 4, which is characterized in that the crystal resonator
(3) using TO-5 encapsulation, the vacuum cold welding type quartz-crystal resonator of high q-factor, low frequency ageing rate.
6. a kind of micromation constant-temperature crystal oscillator according to claim 5, which is characterized in that the crystal resonator
(3) shell is electrically.
7. a kind of micromation constant-temperature crystal oscillator according to claim 6, which is characterized in that the heating power pipe
(4) positive-negative-positive power transistor is used, the heat dissipation pole collector C is also ground network, is maintained at same temperature with crystal resonator (3)
Spend gradient.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822152573.2U CN209170309U (en) | 2018-12-20 | 2018-12-20 | A kind of micromation constant-temperature crystal oscillator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822152573.2U CN209170309U (en) | 2018-12-20 | 2018-12-20 | A kind of micromation constant-temperature crystal oscillator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209170309U true CN209170309U (en) | 2019-07-26 |
Family
ID=67344432
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822152573.2U Active CN209170309U (en) | 2018-12-20 | 2018-12-20 | A kind of micromation constant-temperature crystal oscillator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209170309U (en) |
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2018
- 2018-12-20 CN CN201822152573.2U patent/CN209170309U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A miniaturized thermostatic crystal oscillator Effective date of registration: 20200821 Granted publication date: 20190726 Pledgee: Chengdu SME financing Company Limited by Guarantee Pledgor: CHENGDU SHIYUAN FREQUENCY CONTROL TECHNOLOGY Co.,Ltd. Registration number: Y2020980005258 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20220207 Granted publication date: 20190726 Pledgee: Chengdu SME financing Company Limited by Guarantee Pledgor: CHENGDU SHIYUAN FREQUENCY CONTROL TECHNOLOGY CO.,LTD. Registration number: Y2020980005258 |