CN105610402B - A kind of constant-temperature crystal oscillator of small size low-power consumption - Google Patents
A kind of constant-temperature crystal oscillator of small size low-power consumption Download PDFInfo
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- CN105610402B CN105610402B CN201510948116.2A CN201510948116A CN105610402B CN 105610402 B CN105610402 B CN 105610402B CN 201510948116 A CN201510948116 A CN 201510948116A CN 105610402 B CN105610402 B CN 105610402B
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
- H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
- H03B5/02—Details
- H03B5/04—Modifications of generator to compensate for variations in physical values, e.g. power supply, load, temperature
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Abstract
The present invention relates to a kind of constant-temperature crystal oscillators of small size low-power consumption, this constant temperature oscillator includes the amplifying circuit [2] of the oscillation module [3] of high stable, thermostat heating and bridge-type temperature-adjusting circuit [4], the Voltage stabilizing module [1] 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.The volume of the invention is 14*9*6 (mm), and frequency range is 5 ~ 50M, typical frequencies 10M.
Description
Technical field
The present invention relates to a kind of constant-temperature crystal oscillators of small size, especially to small package, low noise, low-power consumption
Application 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, not only to its high stability (low phase noise, Gao Wen
Property, high reliability) there are strict requirements, also there is strict demand to its package dimension.It, can be with using the design of double-layer structure
It is effective to save space, but the interference between component, configuration, parts selection remain difficult point.
Summary of the invention
Proposed by the present invention is a kind of constant-temperature crystal oscillator of small size, and purpose is intended to not influence oscillator character ginseng
Under the premise of number, encapsulation can be reduced to 14*9*6 (mm).
Technical solution of the invention: the constant-temperature crystal oscillator of small size low-power consumption, it is characterized in that including low noise
The Voltage stabilizing module [1] of high stable, the amplifying circuit [2] of adjustment signal, the oscillation module [3] of high stable, thermostat heating and bridge
Formula temperature-adjusting circuit [4], wherein Voltage stabilizing module [1] provides stable voltage to the vibration of amplifying circuit [2], high stable of adjustment signal
Swinging module [3], thermostat heating and bridge-type temperature-adjusting circuit [4] will after thermostat heating and bridge-type temperature-adjusting circuit [4] are powered
Shell body temperature is constant at 90 DEG C, and the oscillation module [3] of high stable exports stable frequency signal to adjustment signal after powered up
Amplifying circuit [2], signal through adjustment signal amplifying circuit [2] amplification after export.
Using the double-deck PCB construction, the PCB2 comprising one piece of oscillation and PCB1 and one piece of pressure stabilizing and the output of temperature control；
The oscillator circuit of PCB1 is vibrated using gate circuit, this oscillating circuit can not influence spy while simplifying route
Property.
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.
Crystal selects high performance 6035 patch resonator.
The pressure stabilizing route of PCB2 uses integrated regulator pressure stabilizing, can maximally reduce space.High stable, low noise
Power supply chip also has greatly improved to the phase noise of product.
Pio chip select the stronger IC of carrying load ability, it can be achieved that different loads lower frequency stability.
Advantages of the present invention: mostly using integrated device in design, nor affects on performance while reducing space.Resistor-capacitor unit
Use 0402 device.Crystal use 6035 surface mounting crystals, direct patch operation can be carried out with chip mounter, without by hand attachment with
Welding, simplifies processing technology.Double-deck PCB construction, after rationally utilizing space, the temperature that can also improve product is special
Property.The design is compact-sized, and device encapsulation selection is proper, and arrangement is reasonable, so product size can be designed as to 14*9*6 (mm).
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the constant-temperature crystal oscillator of small size low-power consumption.
[1] in Fig. 1 is Voltage stabilizing module, and effect is to provide a stable voltage, and [2] are the amplification electricity of adjustment signal
Road, [3] are the oscillation modules of high stable, and [4] are thermostat heating and bridge-type temperature-adjusting circuit.
Specific embodiment
As shown in Fig. 1, the constant-temperature crystal oscillator of small size low-power consumption, it is characterized in that including the steady of low noise high stable
Die block [1], the amplifying circuit [2] of adjustment signal, the oscillation module [3] of high stable, thermostat heating and bridge-type temperature-adjusting circuit
[4], wherein Voltage stabilizing module [1] provides stable voltage to the amplifying circuit [2] of adjustment signal, the oscillation module [3] of high stable
, thermostat heating and bridge-type temperature-adjusting circuit [4], thermostat heating and bridge-type temperature-adjusting circuit [4] be powered after, by shell body temperature
It is constant at 90 DEG C, the oscillation module [3] of high stable exports stable frequency signal to the amplifying circuit of adjustment signal after powered up
[2], signal exports after the amplification of the amplifying circuit [2] of adjustment signal；
Oscillation module [3], the thermostat of the high stable heat and the oscillator circuit and temperature control of bridge-type temperature-adjusting circuit [4]
Route is placed on PCB1, and the wiring board of oscillator circuit and temperature control route uses 4 layers of PCB, intermediate two, 3 two layers of floor file, in route
Copper foil replace traditional copper billet, reduce space, crystal is mounted on the front PCB1, copper foil can heat crystal,
Guarantee that its temperature is stablized
Thermostat heating and bridge-type temperature-adjusting circuit [4] are placed in PCB1 reverse side, and heating temperature sets 90 DEG C, and thermal current is up
It rises, circulation renews, and entire space is constant at 90 DEG C.
Oscillating circuit includes crystal, gate oscillator, frequency-selective network and capacitor.Crystal is generated after powered up by piezoelectric effect
Signal, by frequency-selective network and gate oscillator, oscillation generates stable signal.Thermostat module includes bridge circuit, and operation is put
Big device, current limliting module, heating module.After temperature control route connects electricity, starup current is limited to zone of reasonableness, bridge-type electricity by current limliting module
Road and operational amplifier cooperation output low and high level, whether control heating module works.
Pressure stabilizing route selects ultra-low noise, wide scope voltage-stablizer, cooperates filter capacitor, will be defeated after input voltage pressure stabilizing
Rear class route is given out.The amplifying circuit of adjustment signal selects low noise, low-power chip, can amplify signal output amplitude and reach
Index request.
Claims (1)
1. the constant-temperature crystal oscillator of small size low-power consumption adjusts letter it is characterized in that including the Voltage stabilizing module of low noise high stable
Number amplifying circuit, the oscillation module of high stable, thermostat heating and bridge-type temperature-adjusting circuit, wherein Voltage stabilizing module provides stable
Voltage is to the amplifying circuit of adjustment signal, the oscillation module of high stable, thermostat heating and bridge-type temperature-adjusting circuit, thermostat heating
And after bridge-type temperature-adjusting circuit is powered, shell body temperature is constant at 90 DEG C, and the oscillation module of high stable exports stabilization after powered up
Frequency signal to adjustment signal amplifying circuit, signal through adjustment signal amplifying circuit amplification after export；
The crystal oscillator is using the double-deck PCB construction, comprising one piece of oscillation and PCB1 and one piece of pressure stabilizing of temperature control and output
PCB2；
The oscillator circuit of the PCB1 is vibrated using gate circuit, this oscillating circuit can not influence spy while simplifying route
Property；
The pressure stabilizing route of the PCB2 uses integrated regulator pressure stabilizing, can maximally reduce space；High stable, low noise
Power supply chip also has greatly improved to the phase noise of product；
Oscillation module, the thermostat of the high stable heat and the oscillator circuit and temperature control route of bridge-type temperature-adjusting circuit are placed in vibration
Swing and the PCB1 of temperature control on, the wiring board of oscillator circuit and temperature control route uses 4 layers of PCB copper foil, intermediate two, 3 two layers of floor file,
Space is reduced, crystal is mounted on the front PCB1 of oscillation and temperature control, and copper foil heats crystal, guarantee that its temperature is stablized,
The oscillator circuit of the PCB1 is vibrated using gate circuit, this oscillating circuit can be while simplifying route, not influencing characterisitic；
The thermostat heating and bridge-type temperature-adjusting circuit are placed in the PCB1 reverse side of oscillation and temperature control, and heating temperature sets 90 DEG C,
Toward rising, circulation renews thermal current, and entire space is constant at 90 DEG C；
The Voltage stabilizing module of the low noise high stable is made of linear voltage regulator, filter capacitor, after pressure stabilizing output, is filtered through capacitor
Power supply noise can be down to minimum by wave；
The voltage-stablizer selects ultra-low noise, wide scope voltage-stablizer, cooperates filter capacitor, will be defeated after input voltage pressure stabilizing
Rear class route is given out；The amplifying circuit of adjustment signal selects low noise, low-power chip, can amplify signal output amplitude and reach
Index request；
The thermostat heating and bridge-type temperature-adjusting circuit pass through PCB copper foil to whole heating, the wiring board that insulating layer is coated with
It is enclosed in COVER；
The inductance in frequency-selective network, capacitor in the oscillation module of the high stable and PCB copper foil are in close contact, guarantee its
When ambient temperature changes, product characteristic is constant；
The 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；
The crystal selects high performance 6035 patch resonator；
Signal output after the amplification of the amplifying circuit of adjustment signal selects the stronger IC of carrying load ability, it can be achieved that different negative
Carry the pio chip of the stability of lower frequency.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510948116.2A CN105610402B (en) | 2015-12-17 | 2015-12-17 | A kind of constant-temperature crystal oscillator of small size low-power consumption |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510948116.2A CN105610402B (en) | 2015-12-17 | 2015-12-17 | A kind of constant-temperature crystal oscillator of small size low-power consumption |
Publications (2)
| Publication Number | Publication Date |
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| CN105610402A CN105610402A (en) | 2016-05-25 |
| CN105610402B true CN105610402B (en) | 2019-08-27 |
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| CN201510948116.2A Active CN105610402B (en) | 2015-12-17 | 2015-12-17 | A kind of constant-temperature crystal oscillator of small size low-power consumption |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106533363A (en) * | 2016-11-02 | 2017-03-22 | 河北鸿捷电子科技有限公司 | Multi-gate oscillation low-phase-noise constant-temperature crystal oscillator |
| CN107911116A (en) * | 2017-12-19 | 2018-04-13 | 江汉大学 | A kind of laser frequency standard signal source |
| CN109687865A (en) * | 2018-12-02 | 2019-04-26 | 南京中电熊猫晶体科技有限公司 | A kind of big pressure controlled constant tempeature crystal oscillator of small size |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201674463U (en) * | 2010-06-13 | 2010-12-15 | 唐山晶源裕丰电子股份有限公司 | Low power consumption vacuum packaging precise constant-temperature compensated crystal oscillator |
| 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 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2393651A1 (en) * | 2002-07-29 | 2004-01-29 | Ralph Dickson Mason | Low power oscillator and power down method |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201674463U (en) * | 2010-06-13 | 2010-12-15 | 唐山晶源裕丰电子股份有限公司 | Low power consumption vacuum packaging precise constant-temperature compensated crystal oscillator |
| 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 |
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