CN107707199A - A kind of crystal oscillator method of supplying power to, device and electronic equipment - Google Patents
A kind of crystal oscillator method of supplying power to, device and electronic equipment Download PDFInfo
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- CN107707199A CN107707199A CN201710702753.0A CN201710702753A CN107707199A CN 107707199 A CN107707199 A CN 107707199A CN 201710702753 A CN201710702753 A CN 201710702753A CN 107707199 A CN107707199 A CN 107707199A
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- crystal oscillator
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- power supply
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- 239000013078 crystal Substances 0.000 title claims abstract description 213
- 238000000034 method Methods 0.000 title claims abstract description 25
- 230000000087 stabilizing effect Effects 0.000 claims abstract description 61
- 230000010355 oscillation Effects 0.000 claims abstract description 39
- 238000012544 monitoring process Methods 0.000 claims abstract description 12
- 238000001514 detection method Methods 0.000 claims description 14
- 230000005611 electricity Effects 0.000 claims description 11
- 238000009434 installation Methods 0.000 claims description 11
- 238000007493 shaping process Methods 0.000 claims description 10
- 239000000126 substance Substances 0.000 claims description 10
- 238000010586 diagram Methods 0.000 description 7
- 230000005059 dormancy Effects 0.000 description 6
- 230000033228 biological regulation Effects 0.000 description 5
- 230000006698 induction Effects 0.000 description 3
- 230000000977 initiatory effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
Classifications
-
- 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 invention provides a kind of crystal oscillator method of supplying power to, device and electronic equipment, this method is by monitoring the signal output state of crystal oscillator, according to signal output state, terminal supply voltage or voltage stabilizing supply voltage is called to be powered for crystal oscillator, voltage stabilizing supply voltage is less than terminal supply voltage, by the supply voltage for switching crystal oscillator, when crystal oscillator needs to start, powered using larger terminal supply voltage for it, increase starting of oscillation speed, when crystal oscillator is normally exported after oscillator signal, powered using less terminal supply voltage for it, reduce power consumption；This method need not increase in crystal oscillator amplify pipe size can accelerate starting of oscillation, solve the problems, such as it is existing increase in crystal oscillator amplify pipe size in a manner of accelerating crystal oscillator starting of oscillation speed present in power consumption become it is big.
Description
Technical field
The present invention relates to crystal oscillator to start field, more particularly to a kind of crystal oscillator method of supplying power to, device and electricity
Sub- equipment.
Background technology
Crystal oscillator has very high frequency stability and excellent phase noise performance, is widely used in all kinds of portable
In formula electronic equipment.In order to save power consumption, when equipment not enabled, park mode is generally in, Cai from dormancy when enabling equipment
For pattern to working mode change, the pattern switching speed of electronic equipment depends on the Induction Peried of crystal oscillator, therefore quickly
Starting of oscillation crystal oscillator can improve switching efficiency.
In order to accelerate the starting of oscillation of crystal oscillator, prior art mainly has in the following manner：By amplifier tube in crystal oscillator
Size is made big, and now loop gain is very high, can be with fast start-up, but power consumption is very big, oscillation amplitude is very big, the lining of introducing
Back noise is very big, accelerates the starting of oscillation of crystal oscillator to sacrifice power consumption as cost, and this is also very high portable to power consumption requirements
Electronic equipment is worthless.
The content of the invention
The present invention provides a kind of crystal oscillator method of supplying power to, device and electronic equipment, existing brilliant by increasing to solve
Amplify power consumption of the pipe size present in a manner of accelerating crystal oscillator starting of oscillation speed in oscillation body device and become the problem of big.
In order to solve the above technical problems, the present invention uses following technical scheme:
A kind of crystal oscillator method of supplying power to, including：
Monitor the signal output state of crystal oscillator；
According to signal output state, terminal supply voltage or voltage stabilizing supply voltage is called to be powered for crystal oscillator, surely
Pressure supply voltage is less than terminal supply voltage.
Further, according to signal output state, it is crystal oscillation to call terminal supply voltage or voltage stabilizing supply voltage
Device power supply includes：
When signal output state is that crystal oscillator does not have output signal, using terminal supply voltage is crystal oscillator
Power supply；
The use of voltage stabilizing supply voltage is crystal oscillator when signal output state is crystal oscillator normal output signal
Power supply.
Further, according to signal output state, it is crystal oscillation to call terminal supply voltage or voltage stabilizing supply voltage
The mode of device power supply includes：
Configuration power supply module, the first voltage input connection terminal supply voltage of power supply module, the second of power supply module
Voltage input end connects voltage stabilizing supply voltage, the control terminal connection signal output state of power supply module, the output end of power supply module
Connect the biasing circuit of crystal oscillator；
When signal output state is that crystal oscillator does not have output signal, power supply module conduction terminal supply voltage is crystalline substance
Oscillation body device is powered；
When signal output state is crystal oscillator normal output signal, power supply module conducting voltage stabilizing supply voltage is crystalline substance
Oscillation body device is powered.
A kind of crystal oscillator electric supply installation, including：
Detection module, for monitoring the signal output state of crystal oscillator；
Power supply module, for according to signal output state, it to be crystal to call terminal supply voltage or voltage stabilizing supply voltage
Oscillator is powered, and voltage stabilizing supply voltage is less than terminal supply voltage.
Further, power supply module is specifically used for：When signal output state is that crystal oscillator does not have output signal, make
It is that crystal oscillator is powered with terminal supply voltage；When signal output state is crystal oscillator normal output signal, use
Voltage stabilizing supply voltage is powered for crystal oscillator.
Further, the first voltage input connection terminal supply voltage of power supply module, the second voltage of power supply module
Input connects voltage stabilizing supply voltage, the control terminal connection signal output state of power supply module, the output end connection of power supply module
The biasing circuit of crystal oscillator；When signal output state is that crystal oscillator does not have output signal, power supply module is used to lead
Logical terminal supply voltage is powered for crystal oscillator；When signal output state is crystal oscillator normal output signal, power supply
Module is used to turn on voltage stabilizing supply voltage for crystal oscillator power supply.
A kind of electronic equipment, including：For exporting the crystal oscillator of oscillator signal and for being supplied for crystal oscillator
The crystal oscillator electric supply installation of electricity, wherein, crystal oscillator power supply circuit includes：
Circuit is detected, for monitoring the signal output state of crystal oscillator, and it is electric corresponding to output signal output state
Ordinary mail number；
Power supply circuit, for according to level signal, it to be crystal oscillation to call terminal supply voltage or voltage stabilizing supply voltage
Device is powered, and voltage stabilizing supply voltage is less than terminal supply voltage.
Further, power supply circuit is specifically used for：When level signal represents crystal oscillator and do not have output signal, use
Terminal supply voltage is powered for crystal oscillator；When level signal represents crystal oscillator normal output signal, voltage stabilizing is used
Supply voltage is powered for crystal oscillator.
Further, in addition to shaping circuit, the oscillator signal progress that shaping circuit is used for crystal oscillator output are whole
Shape.
Further, the first voltage input connection terminal supply voltage of power supply circuit, the connection of second voltage input
Voltage stabilizing supply voltage, control terminal connection level signal, output end connect the biasing circuit of crystal oscillator；Represented in level signal
When crystal oscillator does not have output signal, conduction terminal supply voltage is powered for crystal oscillator；Crystal is represented in level signal
During oscillator normal output signal, conducting voltage stabilizing supply voltage is powered for crystal oscillator.
The invention provides a kind of crystal oscillator method of supplying power to, device and electronic equipment, this method is by monitoring crystal
The signal output state of oscillator, according to signal output state, it is crystal to call terminal supply voltage or voltage stabilizing supply voltage
Oscillator is powered, and voltage stabilizing supply voltage is less than terminal supply voltage, by switching the supply voltage of crystal oscillator, shaken in crystal
When swinging device needs to start, powered using larger terminal supply voltage for it, increase starting of oscillation speed, it is normally defeated in crystal oscillator
When going out after oscillator signal, the use of less terminal supply voltage is its power supply, reduces power consumption；This method need not increase crystal
Starting of oscillation can be accelerated by amplifying pipe size in oscillator, solved and existing amplified pipe size in crystal oscillator by increasing to accelerate
Power consumption present in the mode of crystal oscillator starting of oscillation speed becomes the problem of big.
Brief description of the drawings
Fig. 1 is the flow chart for the crystal oscillator method of supplying power to that the embodiment of the present invention one provides；
Fig. 2 is the structural representation for the crystal oscillator electric supply installation that the embodiment of the present invention two provides；
Fig. 3 is the structural representation for the electronic equipment that the embodiment of the present invention three provides；
Fig. 4 is the circuit diagram for the electronic equipment that the embodiment of the present invention four provides；
Fig. 5 is the circuit diagram for the clock detection module that the embodiment of the present invention four provides；
Fig. 6 is the timing diagram when electronic equipment that the embodiment of the present invention four provides starts；
Timing diagram when Fig. 7 is the electronic equipment dormancy that the embodiment of the present invention four provides.
Embodiment
The present invention is applied to all electronic equipments, including PC, mobile phone, PAD, radio-frequency card etc..Below by specific implementation
Mode combination accompanying drawing is described in further detail to the present invention.
Embodiment one：
Fig. 1 is the flow chart for the crystal oscillator method of supplying power to that the embodiment of the present invention one provides, and refer to Fig. 1, this implementation
The crystal oscillator method of supplying power to that example provides comprises the following steps：
S101：Monitor the signal output state of crystal oscillator；
S102：According to signal output state, terminal supply voltage or voltage stabilizing supply voltage is called to be supplied for crystal oscillator
Electricity, voltage stabilizing supply voltage are less than terminal supply voltage.
In certain embodiments, step S102 includes：
When signal output state is that crystal oscillator does not have output signal, using terminal supply voltage is crystal oscillator
Power supply；
The use of voltage stabilizing supply voltage is crystal oscillator when signal output state is crystal oscillator normal output signal
Power supply.
In certain embodiments, realizing step S102 mode includes：
Configuration power supply module, the first voltage input connection terminal supply voltage of power supply module, the second of power supply module
Voltage input end connects voltage stabilizing supply voltage, the control terminal connection signal output state of power supply module, the output end of power supply module
Connect the biasing circuit of crystal oscillator；
When signal output state is that crystal oscillator does not have output signal, power supply module conduction terminal supply voltage is crystalline substance
Oscillation body device is powered；
When signal output state is crystal oscillator normal output signal, power supply module conducting voltage stabilizing supply voltage is crystalline substance
Oscillation body device is powered.
A kind of crystal oscillator method of supplying power to is present embodiments provided, this method is defeated by the signal for monitoring crystal oscillator
Do well, according to signal output state, call terminal supply voltage or voltage stabilizing supply voltage to be powered for crystal oscillator, voltage stabilizing
Supply voltage is less than terminal supply voltage, by switching the supply voltage of crystal oscillator, when crystal oscillator needs to start,
Powered using larger terminal supply voltage for it, increase starting of oscillation speed, after crystal oscillator normally exports oscillator signal
When, powered using less terminal supply voltage for it, reduce power consumption；This method need not increase amplifier tube in crystal oscillator
Size can accelerate starting of oscillation, solve and existing amplify pipe size in crystal oscillator by increasing to accelerate crystal oscillator starting of oscillation
Power consumption present in the mode of speed becomes the problem of big.
Embodiment two：
Fig. 2 is the structural representation for the crystal oscillator electric supply installation that the embodiment of the present invention two provides, and refer to Fig. 2, this
The crystal oscillator electric supply installation 2 that embodiment provides, including：
Detection module 21, for monitoring the signal output state of crystal oscillator；
Power supply module 22, for according to signal output state, calling terminal supply voltage or voltage stabilizing supply voltage as crystalline substance
Oscillation body device is powered, and voltage stabilizing supply voltage is less than terminal supply voltage.
In certain embodiments, power supply module 22 is specifically used for：It is that crystal oscillator does not export in signal output state
During signal, using terminal supply voltage is powered for crystal oscillator；It is that crystal oscillator normally exports letter in signal output state
Number when, using voltage stabilizing supply voltage be crystal oscillator power.
In certain embodiments, the first voltage input connection terminal supply voltage of power supply module 22, power supply module
Second voltage input connect voltage stabilizing supply voltage, power supply module control terminal connection signal output state, power supply module it is defeated
Go out the biasing circuit of end connection crystal oscillator；When signal output state is that crystal oscillator does not have output signal, mould of powering
Block is used for conduction terminal supply voltage and powered for crystal oscillator；It is crystal oscillator normal output signal in signal output state
When, power supply module is used to turn on voltage stabilizing supply voltage for crystal oscillator power supply.
A kind of crystal oscillator electric supply installation is present embodiments provided, the device is defeated by the signal for monitoring crystal oscillator
Do well, according to signal output state, call terminal supply voltage or voltage stabilizing supply voltage to be powered for crystal oscillator, voltage stabilizing
Supply voltage is less than terminal supply voltage, by switching the supply voltage of crystal oscillator, when crystal oscillator needs to start,
Powered using larger terminal supply voltage for it, increase starting of oscillation speed, after crystal oscillator normally exports oscillator signal
When, powered using less terminal supply voltage for it, reduce power consumption；This method need not increase amplifier tube in crystal oscillator
Size can accelerate starting of oscillation, solve and existing amplify pipe size in crystal oscillator by increasing to accelerate crystal oscillator starting of oscillation
Power consumption present in the mode of speed becomes the problem of big.
Embodiment three：
Fig. 3 is the structural representation for the electronic equipment that the embodiment of the present invention three provides, and refer to Fig. 3, and the present embodiment provides
Electronic equipment 3 include：For exporting the crystal oscillator 31 of oscillator signal and the crystal for being powered for crystal oscillator
Oscillator electric supply installation 32, wherein, crystal oscillator power supply circuit 32 includes：
Circuit 321 is detected, for monitoring the signal output state of crystal oscillator, and corresponding to output signal output state
Level signal；
Power supply circuit 322, for according to level signal, calling terminal supply voltage or voltage stabilizing supply voltage to be shaken for crystal
Device power supply is swung, voltage stabilizing supply voltage is less than terminal supply voltage.
In certain embodiments, power supply circuit 322 is specifically used for：Crystal oscillator, which is represented, in level signal does not export letter
Number when, using terminal supply voltage be crystal oscillator power supply；When level signal represents crystal oscillator normal output signal,
Powered using voltage stabilizing supply voltage for crystal oscillator.
As shown in Figure 3.In certain embodiments, electronic equipment 3 also includes shaping circuit 33, and shaping circuit 33 is used for crystalline substance
The oscillator signal of oscillation body device output carries out shaping.
In certain embodiments, the first voltage input connection terminal supply voltage of power supply circuit 322, second voltage are defeated
Enter end connection voltage stabilizing supply voltage, control terminal connection level signal, output end connects the biasing circuit of crystal oscillator；In level
When signal represents crystal oscillator and do not have output signal, conduction terminal supply voltage is crystal oscillator power supply；In level signal
When representing crystal oscillator normal output signal, conducting voltage stabilizing supply voltage is powered for crystal oscillator.
A kind of electronic equipment is present embodiments provided, the electronic equipment is by monitoring the signal output shape of crystal oscillator
State, according to signal output state, terminal supply voltage or voltage stabilizing supply voltage is called to be powered for crystal oscillator, voltage stabilizing power supply
Voltage is less than terminal supply voltage, by switching the supply voltage of crystal oscillator, when crystal oscillator needs to start, uses
Larger terminal supply voltage is powered for it, is increased starting of oscillation speed, when crystal oscillator is normally exported after oscillator signal, is made
Powered with less terminal supply voltage for it, reduce power consumption；This method need not increase and amplify pipe size in crystal oscillator
Starting of oscillation can be accelerated, solve and existing amplify pipe size in crystal oscillator by increasing to accelerate crystal oscillator starting of oscillation speed
Mode present in power consumption become it is big the problem of.
Example IV：
Fig. 4 is the circuit diagram for the electronic equipment that the embodiment of the present invention four provides, in Fig. 4, crystal (i.e. crystal oscillation
Device), electric capacity C1 and C2 be chip exterior element, remaining is all chip internal element, refer to Fig. 4, the electricity that the present embodiment provides
Sub- equipment includes：
Power module of voltage regulation 401：Power supply during crystal oscillator work is provided, in power down (dormancy) patterns and just
Normal mode of operation but when oscillator signal is not set up also, the terminal supply voltage (AVDD) provided using electronic equipment power source is directly supplied
Electricity；After normal mode of operation and crystal oscillator start completion normally export oscillator signal, switch to power module of voltage regulation and carry
Voltage stabilizing supply voltage (VREF) power supply of confession.In actual applications, AVDD=3.3V, VREF=1.2V.
Clock detection module 402：When crystal oscillator dead-beat signal output, clock detection module 402 exports low electricity
It is flat, i.e. Ini t ial=0；When detecting that crystal oscillator exports oscillator signal, clock detection module 402 exports high level,
That is Ini t ial=1.
Schmidt trigger 403：Shaping circuit i.e. in above-described embodiment, for the vibration letter exported to crystal oscillator
Number carry out shaping after export, avoid clutter interference.
And crystal oscillator main circuit and biasing circuit：Crystal, electric capacity C1/C2/C3/C4, resistance R1, PM2 and NM3 structure
Into crystal oscillator main circuit；Current source I 1, resistance R2 and R3 form biasing circuit, and biasing circuit provides crystal oscillator work
DC level when making.
The operation principle of electronic equipment shown in Fig. 4 is as follows：
When power down patterns and normal mode of operation but oscillator signal are not set up also, clock detection module is not examined
Measure oscillator signal, clock detection module output signal Ini t ial are low level, and PMOS PM1 is opened in power module of voltage regulation
Open, NMOS tube NM2 grid end is pulled upward to high level, crystal oscillator main circuit and biased electrical routing power pass through NMOS tube
NM2 directly powers；
After normal mode of operation and crystal oscillator start completion, clock detection module detects oscillator signal, clock
Detection module output signal Ini t ial are high level, and PMOS PM1 is closed, and crystal oscillator main circuit and biasing circuit are cut
Change into and powered by voltage-stabilized power supply.
In a more preferred embodiment, clock detection module 402 realizes circuit as shown in figure 5, its operation principle is as follows：
When not having oscillator signal (input IN is low level), A points are that can not be opened compared with low level, NMOS tube NM33,
Output OUT is low level；
When there is oscillator signal (input IN is oscillator signal), between high period, current source I31 passes through PM32 pairs of PMOS
Electric capacity C31 is charged, and during clock low, electric capacity C31 is discharged by NMOS tube NM32, and A points are higher level, and output OUT is
High level.
Timing diagram with reference to shown in Fig. 6, the Booting sequence progress to electronic equipment are as described below：
T0 moment, system are in Pown down patterns, and crystal oscillator does not work, and Ini t ial signals are low level,
Crystal oscillator is directly powered by device power supply (DPS)；
T1 moment, system are switched to normal mode of operation, start crystal oscillator；
T2 moment, crystal oscillator start to export oscillator signal CLK；Wherein, the difference at T2 moment and T1 moment is equal to crystalline substance
The Induction Peried of oscillation body device；
T3 moment, clock detection circuit detect oscillator signal, Initial signals are put into high level, crystal oscillator is cut
Change to and powered by power module of voltage regulation.
Timing diagram with reference to shown in Fig. 7, the dormancy flow to electronic equipment carry out as described below：
T4 moment, system are in normal mode of operation, crystal oscillator work, and Init ial signals are high level, crystal
Oscillator is powered by power module of voltage regulation；
T5 moment, system are switched to Pown down patterns, dormancy crystal oscillator；
T6 moment, crystal oscillator stop output oscillator signal CLK；Wherein, the difference at T6 moment and T5 moment is equal to crystalline substance
The dormancy time of oscillation body device, its original are less than Induction Peried；
T7 moment, clock detection circuit are not detected by oscillator signal, and Init ial signals are set low into level, crystal oscillator
It is switched to and is directly powered by device power supply (DPS).
By the implementation of above example, the present invention possesses following beneficial effect：
The invention provides a kind of crystal oscillator method of supplying power to, device and electronic equipment, this method is by monitoring crystal
The signal output state of oscillator, according to signal output state, it is crystal to call terminal supply voltage or voltage stabilizing supply voltage
Oscillator is powered, and voltage stabilizing supply voltage is less than terminal supply voltage, by switching the supply voltage of crystal oscillator, shaken in crystal
When swinging device needs to start, powered using larger terminal supply voltage for it, increase starting of oscillation speed, it is normally defeated in crystal oscillator
When going out after oscillator signal, the use of less terminal supply voltage is its power supply, reduces power consumption；This method need not increase crystal
Starting of oscillation can be accelerated by amplifying pipe size in oscillator, solved and existing amplified pipe size in crystal oscillator by increasing to accelerate
Power consumption present in the mode of crystal oscillator starting of oscillation speed becomes the problem of big.
Above content is to combine specific embodiment further description made for the present invention, it is impossible to assert this hair
Bright specific implementation is confined to these explanations.For general technical staff of the technical field of the invention, do not taking off
On the premise of from present inventive concept, some simple deduction or replace can also be made, should all be considered as belonging to the protection of the present invention
Scope.
Claims (10)
- A kind of 1. crystal oscillator method of supplying power to, it is characterised in that including：Monitor the signal output state of crystal oscillator；According to the signal output state, terminal supply voltage or voltage stabilizing supply voltage is called to be supplied for the crystal oscillator Electricity, the voltage stabilizing supply voltage are less than the terminal supply voltage.
- 2. crystal oscillator method of supplying power to as claimed in claim 1, it is characterised in that described according to the signal output shape State, it is that crystal oscillator power supply includes to call terminal supply voltage or voltage stabilizing supply voltage：When the signal output state is that the crystal oscillator does not have output signal, using terminal supply voltage is the crystalline substance Oscillation body device is powered；The use of voltage stabilizing supply voltage is the crystalline substance when the signal output state is the crystal oscillator normal output signal Oscillation body device is powered.
- 3. crystal oscillator method of supplying power to as claimed in claim 1 or 2, it is characterised in that described according to the signal output State, it is that the mode that the crystal oscillator is powered includes to call terminal supply voltage or voltage stabilizing supply voltage：Power supply module is configured, the first voltage input of the power supply module connects the terminal supply voltage, the power supply mould The second voltage input of block connects the voltage stabilizing supply voltage, and the control terminal of the power supply module connects the signal output shape State, the output end of the power supply module connect the biasing circuit of the crystal oscillator；When the signal output state is that the crystal oscillator does not have output signal, the power supply module turns on the terminal Supply voltage is powered for the crystal oscillator；When the signal output state is the crystal oscillator normal output signal, the power supply module turns on the voltage stabilizing Supply voltage is powered for the crystal oscillator.
- A kind of 4. crystal oscillator electric supply installation, it is characterised in that including：Detection module, for monitoring the signal output state of crystal oscillator；Power supply module, for according to the signal output state, it to be described to call terminal supply voltage or voltage stabilizing supply voltage Crystal oscillator is powered, and the voltage stabilizing supply voltage is less than the terminal supply voltage.
- 5. crystal oscillator electric supply installation as claimed in claim 4, it is characterised in that the power supply module is specifically used for： When the signal output state is that the crystal oscillator does not have output signal, using terminal supply voltage is the crystal oscillation Device is powered；The use of voltage stabilizing supply voltage is institute when the signal output state is the crystal oscillator normal output signal State crystal oscillator power supply.
- 6. the crystal oscillator electric supply installation as described in claim 4 or 5, it is characterised in that the first electricity of the power supply module Input is pressed to connect the terminal supply voltage, the second voltage input of the power supply module connects the voltage stabilizing power supply electricity Pressure, the control terminal of the power supply module connect the signal output state, and the output end of the power supply module connects the crystal The biasing circuit of oscillator；When the signal output state is that the crystal oscillator does not have output signal, the power supply mould Block is used to turn on the terminal supply voltage for crystal oscillator power supply；It is that the crystal shakes in the signal output state When swinging device normal output signal, the power supply module is used to turn on the voltage stabilizing supply voltage for crystal oscillator power supply.
- 7. a kind of electronic equipment, it is characterised in that including：For exporting the crystal oscillator of oscillator signal and for for institute The crystal oscillator electric supply installation of crystal oscillator power supply is stated, wherein, the crystal oscillator power supply circuit includes：Circuit is detected, for monitoring the signal output state of the crystal oscillator, and it is corresponding to export the signal output state Level signal；Power supply circuit, for according to the level signal, it to be the crystal to call terminal supply voltage or voltage stabilizing supply voltage Oscillator is powered, and the voltage stabilizing supply voltage is less than the terminal supply voltage.
- 8. electronic equipment as claimed in claim 7, it is characterised in that the power supply circuit is specifically used for：Believe in the level When number representing the crystal oscillator does not have output signal, using terminal supply voltage is crystal oscillator power supply；Institute The use of voltage stabilizing supply voltage is that the crystal oscillator supplies when stating level signal and representing the crystal oscillator normal output signal Electricity.
- 9. electronic equipment as claimed in claim 7, it is characterised in that also including shaping circuit, the shaping circuit is used for pair The oscillator signal of the crystal oscillator output carries out shaping.
- 10. the electronic equipment as described in any one of claim 7 to 9, it is characterised in that the first voltage of the power supply circuit is defeated Enter end and connect the terminal supply voltage, second voltage input connects the voltage stabilizing supply voltage, and control terminal connects the electricity Ordinary mail number, output end connect the biasing circuit of the crystal oscillator；The crystal oscillator is represented in the level signal not having When having output signal, turn on the terminal supply voltage and powered for the crystal oscillator；Described in being represented in the level signal During crystal oscillator normal output signal, turn on the voltage stabilizing supply voltage and powered for the crystal oscillator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710702753.0A CN107707199A (en) | 2017-08-16 | 2017-08-16 | A kind of crystal oscillator method of supplying power to, device and electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710702753.0A CN107707199A (en) | 2017-08-16 | 2017-08-16 | A kind of crystal oscillator method of supplying power to, device and electronic equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107707199A true CN107707199A (en) | 2018-02-16 |
Family
ID=61170145
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710702753.0A Pending CN107707199A (en) | 2017-08-16 | 2017-08-16 | A kind of crystal oscillator method of supplying power to, device and electronic equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107707199A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06162223A (en) * | 1992-11-25 | 1994-06-10 | Nec Ic Microcomput Syst Ltd | Single chip microcomputer |
| CN101458539A (en) * | 2007-12-11 | 2009-06-17 | 上海华虹Nec电子有限公司 | Current source circuit and current source implementing method |
| CN104218915A (en) * | 2014-09-01 | 2014-12-17 | 长沙景嘉微电子股份有限公司 | Low-energy-consumption and quick-oscillation-starting crystal oscillator circuit with automatic detection function |
| CN106026923A (en) * | 2016-05-16 | 2016-10-12 | 东南大学 | Near-threshold low-power-consumption quadrature voltage controlled oscillator |
-
2017
- 2017-08-16 CN CN201710702753.0A patent/CN107707199A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06162223A (en) * | 1992-11-25 | 1994-06-10 | Nec Ic Microcomput Syst Ltd | Single chip microcomputer |
| CN101458539A (en) * | 2007-12-11 | 2009-06-17 | 上海华虹Nec电子有限公司 | Current source circuit and current source implementing method |
| CN104218915A (en) * | 2014-09-01 | 2014-12-17 | 长沙景嘉微电子股份有限公司 | Low-energy-consumption and quick-oscillation-starting crystal oscillator circuit with automatic detection function |
| CN106026923A (en) * | 2016-05-16 | 2016-10-12 | 东南大学 | Near-threshold low-power-consumption quadrature voltage controlled oscillator |
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