CN105610402A - Small-size and low-power consumption constant temperature crystal oscillator - Google Patents
Small-size and low-power consumption constant temperature crystal oscillator Download PDFInfo
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- CN105610402A CN105610402A CN201510948116.2A CN201510948116A CN105610402A CN 105610402 A CN105610402 A CN 105610402A CN 201510948116 A CN201510948116 A CN 201510948116A CN 105610402 A CN105610402 A CN 105610402A
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- circuit
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- crystal oscillator
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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
Abstract
The invention relates to a small-size and low-power consumption constant temperature crystal oscillator. The constant temperature crystal oscillator includes a high-stability oscillation module [3], a thermostat heating and bridge type temperature control circuit [4], a low-noise and high-stability voltage stabilization module [1] and an amplification circuit [2] for adjusting signals. An oscillation circuit adopts a gate circuit oscillation mode, and is provided with a frequency selective network; a temperature control circuit performs heating control on the oscillation circuit through PCB coated copper; a temperature characteristic self-compensating unit is arranged in the temperature control circuit; and a voltage stabilization circuit adopts a small-size, low-noise and high stability linear LDO. The volume of the small-size and low-power consumption constant temperature crystal oscillator of the invention is 14*9* 6 (mm), the frequency range of the oscillator is from 5 to 50M, and the typical frequency of the oscillator is 10M.
Description
Technical field
What the present invention relates to is a kind of undersized constant-temperature crystal oscillator, particularly to little encapsulation, low noise, low-power consumptionApplication.
Background technology
Along with the development of electronic technology, portable product is more and more favored. The device of large encapsulation is due to volumeReason, has exited market gradually. Crystal oscillator is as a kind of important reference source, not only to its high stability (low phase noise, Gao WenProperty, high reliability) there is strict requirement, its package dimension is also had to strict demand. Use double-deck design, canEffectively save space, but interference, configuration, parts selection between components and parts still exists difficult point.
Summary of the invention
What the present invention proposed is a kind of undersized constant-temperature crystal oscillator, and its object is intended to not affect oscillator character ginsengUnder number prerequisite, encapsulation can be reduced to 14*9*6 (mm).
Technical solution of the present invention: the constant-temperature crystal oscillator of small size low-power consumption, is characterized in that comprising low noiseThe Voltage stabilizing module [1] of high stable, the amplifying circuit [2] of conditioning signal, the oscillation module [3] of high stable, thermostat heating and bridgeFormula temperature-adjusting circuit [4], wherein Voltage stabilizing module [1] provides shaking of the stable voltage amplifying circuit [2] to conditioning signal, high stableSwing module [3], thermostat heating and bridge-type temperature-adjusting circuit [4], after thermostat heating and bridge-type temperature-adjusting circuit [4] energising, willIn housing, temperature constant is at 90 DEG C, and the frequency signal of the oscillation module of high stable [3] stable output after energising is to conditioning signalAmplifying circuit [2], signal is exported after the amplifying circuit [2] of conditioning signal amplifies.
Adopt double-deck PCB structure, the PCB2 that comprises a vibration and the PCB1 of temperature control and voltage stabilizing and output;
The oscillator circuit of PCB1 adopts gate circuit vibration, and this oscillating circuit can be in simplifying circuit, not influencing characterisitic.
Frequency-selective network adopts LC frequency-selecting, and temperature control circuit adopts bridge-type temperature control circuit, and operational amplifier is selected undersizedOPA348, other resistor-capacitor units all use 0402 device.
Crystal is selected high performance 6035 patch resonator.
The voltage stabilizing circuit of PCB2 adopts integrated regulator voltage stabilizing, can reduce to greatest extent space. High stable, low noisePower supply chip, also has greatly improved to the phase noise of product.
The IC that pio chip select tape load capacity is stronger, can realize the stability of different loads lower frequency.
Advantage of the present invention: the integrated devices that adopt in design, do not affect performance more in reducing space yet. Resistor-capacitor unitUse 0402 device. Crystal uses 6035 surface mounting crystals, can carry out direct paster operation with chip mounter, mount without manual andWelding, has simplified processing technology. Double-deck PCB structure, after rationally utilizing space, can also improve the temperature spy of productProperty. The design's compact conformation, device package is selected proper, arranges rationally, so product size can be designed to 14*9*6 (mm).
Brief description of the drawings
Fig. 1 is the structural representation of the constant-temperature crystal oscillator of small size low-power consumption.
[1] in Fig. 1 is Voltage stabilizing module, and its effect is to provide a stable voltage, and [2] are the amplification electricity of conditioning signalRoad, [3] are the oscillation modules of high stable, [4] are thermostat heating and bridge-type temperature-adjusting circuit.
Detailed description of the invention
As shown in Figure 1, the constant-temperature crystal oscillator of small size low-power consumption, is characterized in that comprising the steady of low noise high stableDie block [1], the amplifying circuit [2] of conditioning 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 conditioning signal, the oscillation module [3] of high stable, thermostat heating and bridge-type temperature-adjusting circuit [4], after thermostat heating and bridge-type temperature-adjusting circuit [4] energising, by temperature in housingConstant in 90 DEG C, the frequency signal of the oscillation module of high stable [3] stable output after energising is to the amplifying circuit of conditioning signal[2], signal output after the amplifying circuit [2] of conditioning signal amplifies;
Oscillator circuit and the temperature control circuit of oscillation module [3], thermostat heating and the bridge-type temperature-adjusting circuit [4] of described high stableBe placed in PCB1 upper, the wiring board of oscillator circuit and temperature control circuit adopts 4 layers of PCB, middle two, three two-layer floor file, the copper in circuitPaper tinsel replaces traditional copper billet, reduces space, and crystal is mounted on PCB1 front, and Copper Foil can heat crystal, ensuresIts temperature stabilization
Thermostat heating and bridge-type temperature-adjusting circuit [4] are placed in PCB1 reverse side, and heating-up temperature is set 90 DEG C, and thermal current, toward rising, followsRing renews, and whole space constant is fixed on to 90 DEG C.
Oscillating circuit comprises crystal, gate oscillator, frequency-selective network and electric capacity. Crystal, by piezo-electric effect, produces after energisingSignal, by frequency-selective network and gate oscillator, vibration produces stable signal. Thermostat module comprises bridge circuit, and computing is putLarge device, current limliting module, heating module. Temperature control circuit connects after electricity, and starup current is limited to zone of reasonableness by current limliting module, bridge-type electricityRoad coordinates output low and high level with operational amplifier, whether control heating module work.
Voltage stabilizing circuit is selected voltage-stablizer ultra-low noise, wide region, coordinates filter capacitor, by defeated after input voltage voltage stabilizingGo out to rear class circuit. The amplifying circuit of conditioning signal is selected low noise, low-power chip, signal output amplitude can be amplified and is reachedIndex request.
Claims (7)
1. the constant-temperature crystal oscillator of small size low-power consumption, is characterized in that comprising the Voltage stabilizing module of low noise high stable, regulates letterNumber amplifying circuit, the oscillation module of high stable, thermostat heating and bridge-type temperature-adjusting circuit, wherein Voltage stabilizing module provides stableVoltage is to the amplifying circuit of conditioning signal, oscillation module, thermostat heating and the bridge-type temperature-adjusting circuit of high stable, thermostat heatingAnd after bridge-type temperature-adjusting circuit energising, by temperature constant in housing at 90 DEG C, the oscillation module of high stable stable output after energisingFrequency signal to the amplifying circuit of conditioning signal, signal output after the amplifying circuit of conditioning signal amplifies.
2. the constant-temperature crystal oscillator of small size low-power consumption according to claim 1, the high stable described in it is characterized in thatOscillator circuit and the temperature control circuit of oscillation module, thermostat heating and bridge-type temperature-adjusting circuit are placed on the PCB1 of vibration and temperature control,The wiring board of oscillator circuit and temperature control circuit adopts 4 layers of PCB Copper Foil, and middle two, three two-layer floor file, reduce space, and crystal mountsOn the PCB1 front of vibration and temperature control, Copper Foil heats crystal, ensures its temperature stabilization, the oscillator circuit of described PCB1The vibration of employing gate circuit, this oscillating circuit can be in simplifying circuit, not influencing characterisitic.
3. the constant-temperature crystal oscillator of small size low-power consumption according to claim 1, is characterized in that described thermostat addsHeat and bridge-type temperature-adjusting circuit are placed in the PCB1 reverse side of vibration and temperature control, and heating-up temperature is set 90 DEG C, and thermal current is toward rising, and circulation is multipleBegin, whole space constant is fixed on to 90 DEG C.
4. the constant-temperature crystal oscillator of small size low-power consumption according to claim 2, is characterized in that described voltage stabilizing circuitSelect voltage-stablizer ultra-low noise, wide region, coordinate filter capacitor, will after input voltage voltage stabilizing, export to rear class circuit; AdjustThe amplifying circuit of joint signal is selected low noise, low-power chip, signal output amplitude can be amplified to the requirement that touches the mark.
5. the constant-temperature crystal oscillator of small size low-power consumption according to claim 1, is characterized in that
The Voltage stabilizing module of described low noise high stable is made up of linear voltage regulator, filter capacitor, after voltage stabilizing output, filters through electric capacityRipple, can be down to power supply noise minimum.
6. the constant-temperature crystal oscillator of small size low-power consumption according to claim 1, is characterized in that
Described thermostat heating and bridge-type temperature-adjusting circuit heat entirety by PCB Copper Foil, the wiring board that heat-insulation layer is being coatedBe enclosed in COVER.
7. the constant-temperature crystal oscillator of small size low-power consumption according to claim 1, is characterized in that: described high stableOscillation module in frequency-selective network in inductance, electric capacity and PCB Copper Foil close contact, ensure that it is in the time of extraneous variations in temperature,Product performance is constant.
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 |
|---|---|
| CN105610402A true CN105610402A (en) | 2016-05-25 |
| CN105610402B CN105610402B (en) | 2019-08-27 |
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| Application Number | Title | Priority Date | Filing Date |
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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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Cited By (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 (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040063473A1 (en) * | 2002-07-29 | 2004-04-01 | Devries Christopher Andrew | Power down system and method for integrated circuits |
| 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 |
-
2015
- 2015-12-17 CN CN201510948116.2A patent/CN105610402B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040063473A1 (en) * | 2002-07-29 | 2004-04-01 | Devries Christopher Andrew | Power down system and method for integrated circuits |
| 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 |
Cited By (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 |
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| Publication number | Publication date |
|---|---|
| CN105610402B (en) | 2019-08-27 |
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