CN215528963U - Paster temperature compensation crystal oscillation circuit - Google Patents
Paster temperature compensation crystal oscillation circuit Download PDFInfo
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- CN215528963U CN215528963U CN202121371218.XU CN202121371218U CN215528963U CN 215528963 U CN215528963 U CN 215528963U CN 202121371218 U CN202121371218 U CN 202121371218U CN 215528963 U CN215528963 U CN 215528963U
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Abstract
The utility model discloses a chip temperature compensation crystal oscillation circuit which comprises a 20MHz voltage control temperature compensation reference source circuit, a voltage regulation control circuit, a 100MHz voltage control crystal oscillation circuit, a signal amplification shaping circuit, a frequency selection filter circuit, a phase-locked loop circuit and an LDO voltage stabilization power supply circuit, wherein the 20MHz voltage control temperature compensation reference source circuit consists of a chip temperature compensation crystal oscillator U1. This paster temperature compensation crystal oscillation circuit adopts paster temperature compensation crystal oscillator can simplify the circuit, further compresses crystal oscillator whole volume, improves the phase noise, adopts the subsides to shake moreover and can further improve crystal oscillator's shock resistance.
Description
Technical Field
The utility model relates to the technical field of crystal oscillation circuits, in particular to a patch temperature compensation crystal oscillation circuit.
Background
At present, a temperature compensation crystal oscillator circuit adopted by the digital temperature compensation circuit is complex, the whole volume expansion of the crystal oscillator is large, the phase noise is low, the shock resistance of the crystal oscillator is low, and the circuit stability requirement cannot be met.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a chip temperature compensation crystal oscillation circuit, which can simplify the circuit by adopting a chip temperature compensation crystal oscillator, further compress the whole volume of the crystal oscillator, improve the phase noise, further improve the shock resistance of the crystal oscillator by adopting the chip temperature compensation crystal oscillator and solve the problems in the prior art.
In order to achieve the purpose, the utility model provides the following technical scheme: a chip temperature compensation crystal oscillation circuit comprises a 20MHz voltage control temperature compensation reference source circuit, a voltage regulation control circuit, a 100MHz voltage control crystal oscillation circuit, a signal amplification shaping circuit, a frequency selection filter circuit, a phase-locked loop circuit and an LDO voltage stabilization power supply circuit, wherein the 20MHz voltage control temperature compensation reference source circuit consists of a chip temperature compensation crystal oscillator U1, a pin 1 of the chip temperature compensation crystal oscillator U1 is connected with a capacitor C69 and a resistor R22 which are connected in series, the resistor R22 is connected with a resistor R19 and a resistor R21 respectively and a capacitor C50 and a resistor R20 which are connected in parallel, the resistor R19 is connected with 4V voltage, the resistor R21 is connected with a VC port, and a pin 4 of the chip temperature compensation crystal oscillator U1 is connected with the parallel capacitor C58, the capacitor C15 and the resistor R28 and then is connected with the 4V voltage;
the voltage regulation control circuit is composed of a resistor R31, a capacitor C61, a resistor R32, a capacitor C67, a capacitor C15, a resistor R29, a capacitor C62, a resistor R11, a capacitor C46, a resistor R15, a diode D1 and a diode D2, wherein the resistor R31 is respectively connected with the resistor R29, the resistor R32 and the capacitor C61, the resistor R29 is respectively connected with the capacitor C62 and the resistor R11, the resistor R32 is connected with the parallel capacitor C67 and the capacitor C68, the resistor R11 is respectively connected with the capacitor C46 and the resistor R15, and the resistor R15 is respectively connected with the diode D1, the parallel diode D2 and the parallel resistor R18;
the 100MHz voltage-controlled crystal oscillation circuit consists of an integrated chip IC1, wherein a pin 2 of an integrated chip IC1 is connected with a capacitor C28, a capacitor C28 is respectively connected with a capacitor C36, an inductor L11 and an inductor L8 which are connected in series, a pin 4 of the integrated chip IC1 is respectively connected with a capacitor C35, an inductor L9 and a capacitor C7 which are connected in series, an inductor L9 is respectively connected with a high-stability crystal J1, an inductor L6, a capacitor C17 and a capacitor C18 which are connected in parallel, and the high-stability crystal J1 is connected with the inductor L8;
the signal amplification and shaping circuit consists of an integrated chip IC4, a pin 5 of the integrated chip IC4 is connected with a resistor R8 and a resistor R13 which are connected in series and then connected with a voltage of +3.6V, and a pin 4 of the integrated chip IC4 is connected with a capacitor C37 and then outputs a 100MHz oscillation signal;
the frequency-selecting filter circuit consists of a capacitor C34, a resistor R25, an inductor L1, an inductor L2, a capacitor C38 and a capacitor C41, wherein the capacitor C34 is connected with the resistor R25 and the inductor L1 which are connected in series, and the inductor L1 is respectively connected with the inductor L2, the capacitor C41 and the capacitor C38 which are connected in series;
the phase-locked loop circuit consists of a phase-locked loop IC2 and a singlechip IC3, wherein a pin 5 of a phase-locked loop IC2 is connected with a capacitor C76, the capacitor C76 is connected with an inductor L5, a pin 7 of the phase-locked loop IC2 is connected with a capacitor C63, a capacitor C64, a capacitor C65 and a capacitor C66 which are connected in parallel, and then +3V voltage is connected, the capacitor C66 is connected with the inductor L5, a pin 9 of the phase-locked loop IC2 is connected with the inductor L5 and grounded, and pins 10, 13, 12 and 11 of an integrated chip IC2 are respectively connected with a pin 1, a pin 2, a pin 3 and a pin 5 of the integrated chip IC 3;
the LDO voltage-stabilizing power supply circuit consists of an integrated chip IC5 and an integrated chip IC6, wherein a pin 1 of the integrated chip IC6 is connected with a capacitor C2 and is grounded, a pin 4 of the integrated chip IC6 is connected with a capacitor C8 in parallel and is grounded, a pin 5 of the integrated chip IC6 is connected with a capacitor C51 and a capacitor C1 which are connected in parallel and outputs 4V voltage, a pin 1 of the integrated chip IC5 is connected with a pin 3 of the integrated chip IC6, a diode D3, the capacitor C53, a capacitor C54 and a capacitor C56 which are connected in parallel and are connected with 5V voltage, and a pin 5 of the integrated chip IC5 outputs 4V voltage.
Preferably, the capacitor C36 is connected to the diode D1, the diode D2 and the resistor R18 in parallel, respectively.
Preferably, the capacitor C7 is connected to pin 2 of the IC4, and pin 4 of the IC4 is also connected to the capacitor C34.
Preferably, the pin 6 of the phase-locked loop IC2 is connected to the capacitor C41, and the pin 8 of the phase-locked loop IC2 is connected to the capacitor C60 and then to the pin 3 of the chip temperature compensation crystal oscillator U1.
Preferably, the pin 15 and the pin 10 of the IC2 are connected to a resistor R10, and the resistor R10 is connected to a parallel capacitor C22 and a capacitor C33, and then connected to the pin 5 of the IC 5.
Compared with the prior art, the utility model has the following beneficial effects:
this paster temperature compensation crystal oscillation circuit utilizes 20 MHz's paster temperature compensation crystal oscillator U1 to pass through phase-locked loop circuit, locks 100MHz voltage-controlled crystal oscillation circuit output 100MHz high stable high frequency oscillation signal, can improve crystal oscillator's temperature characteristic and frequency stability, consequently compares with digital temperature compensation, adopts paster temperature compensation crystal oscillator can simplify the circuit, further compresses crystal oscillator whole volume, improves phase noise, adopts the subsides vibration can further improve crystal oscillator's shock resistance moreover.
Drawings
FIG. 1 is a circuit diagram of a 20MHz voltage-controlled temperature compensation reference source according to the present invention;
FIG. 2 is a circuit diagram of the voltage regulation control circuit of the present invention;
FIG. 3 is a diagram of a 100MHz VCO oscillating circuit in accordance with the present invention;
FIG. 4 is a circuit diagram of the signal amplifying and shaping circuit of the present invention;
FIG. 5 is a circuit diagram of the frequency selective filter of the present invention;
FIG. 6 is a circuit diagram of a phase locked loop according to the present invention;
FIG. 7 is a circuit diagram of the LDO regulator power supply of the present invention;
FIG. 8 is an overall circuit schematic of the present invention;
in the figure: 1. a 20MHz voltage-controlled temperature-compensated reference source circuit; 2. a voltage regulation control circuit; 3. a 100MHz voltage controlled crystal oscillator circuit; 4. a signal amplifying and shaping circuit; 5. a frequency selective filter circuit; 6. a phase-locked loop circuit; 7. LDO steady voltage supply circuit.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-8, a chip temperature compensation crystal oscillator circuit includes a 20MHz voltage-controlled temperature compensation reference source circuit 1, a voltage regulation control circuit 2, a 100MHz voltage-controlled crystal oscillator circuit 3, a signal amplification shaping circuit 4, a frequency-selective filter circuit 5, a phase-locked loop circuit 6 and an LDO regulated power supply circuit 7, where the 20MHz voltage-controlled temperature compensation reference source circuit 1 is composed of a chip temperature compensation crystal oscillator U1, a pin 1 of the chip temperature compensation crystal oscillator U1 is connected to a capacitor C69 and a resistor R22 connected in series, and the resistor R22 is connected to a resistor R19, a resistor R21, a capacitor C50 and a resistor R20 connected in parallel, respectively, the resistor R19 is connected to a 4V voltage, the resistor R21 is connected to a VC port, and a pin 4 of the chip temperature compensation crystal oscillator U1 is connected to the parallel capacitor C58, the capacitor C15, and the resistor R28, and then connected to the 4V voltage.
The voltage regulation control circuit 2 is composed of a resistor R31, a capacitor C61, a resistor R32, a capacitor C67, a capacitor C15, a resistor R29, a capacitor C62, a resistor R11, a capacitor C46, a resistor R15, a diode D1 and a diode D2, wherein the resistor R31 is respectively connected with the resistor R29, the resistor R32 and the capacitor C61, the resistor R29 is respectively connected with the capacitor C62 and the resistor R11, the resistor R32 is connected with the capacitor C67 and the capacitor C68 which are connected in parallel, the resistor R11 is respectively connected with the capacitor C46 and the resistor R15, and the resistor R15 is respectively connected with the diode D1, the diode D2 and the resistor R18 which are connected in parallel.
The 100MHz voltage-controlled crystal oscillation circuit 3 is composed of an integrated chip IC1, a 2 pin of the integrated chip IC1 is connected with a capacitor C28, the capacitor C28 is respectively connected with a capacitor C36, an inductor L11 and an inductor L8 which are connected in series, a 4 pin of the integrated chip IC1 is respectively connected with a capacitor C35, an inductor L9 and a capacitor C7 which are connected in series, meanwhile, an inductor L9 is respectively connected with a high-stability crystal J1, an inductor L6, a capacitor C17 and a capacitor C18 which are connected in parallel, and the high-stability crystal J1 is connected with the inductor L8.
The signal amplification and shaping circuit 4 is composed of an integrated chip IC4, a pin 5 of the integrated chip IC4 is connected with a resistor R8 and a resistor R13 which are connected in series and then connected with a voltage of +3.6V, and a pin 4 of the integrated chip IC4 is connected with a capacitor C37 and then outputs a 100MHz oscillation signal.
The frequency-selecting filter circuit 5 is composed of a capacitor C34, a resistor R25, an inductor L1, an inductor L2, a capacitor C38 and a capacitor C41, the capacitor C34 is connected with the resistor R25 and the inductor L1 which are connected in series, and the inductor L1 is respectively connected with the inductor L2, the capacitor C41 and the capacitor C38 which are connected in series.
The phase-locked loop circuit 6 is composed of a phase-locked loop IC2 and a singlechip IC3, a 5 pin of the phase-locked loop IC2 is connected with a capacitor C76, the capacitor C76 is connected with an inductor L5, a 7 pin of the phase-locked loop IC2 is connected with a capacitor C63, a capacitor C64, a capacitor C65 and a capacitor C66 which are connected in parallel, then +3V voltage is connected, a capacitor C66 is connected with the inductor L5, a 9 pin of the phase-locked loop IC2 is connected with the inductor L5 and grounded, and a 10 pin, a 13 pin, a 12 pin and a 11 pin of the integrated chip IC2 are respectively connected with a 1 pin, a 2 pin, a 3 pin and a 5 pin of the integrated chip IC 3.
The LDO voltage stabilization power supply circuit 7 consists of an integrated chip IC5 and an integrated chip IC6, wherein a pin 1 of the integrated chip IC6 is connected with a capacitor C2 and is grounded, a pin 4 of the integrated chip IC6 is connected with a capacitor C8 in parallel and is grounded, a pin 5 of the integrated chip IC6 is connected with a capacitor C51 and a capacitor C1 which are connected in parallel and outputs 4V voltage, a pin 1 of the integrated chip IC5 is connected with a pin 3 of the integrated chip IC6, a diode D3, the capacitor C53, a capacitor C54 and a capacitor C56 which are connected in parallel and are connected with 5V voltage, and a pin 5 of the integrated chip IC5 outputs 4V voltage.
In the above, the capacitor C36 is connected to the diode D1, the diode D2 and the resistor R18 which are connected in parallel, the capacitor C7 is connected to the pin 2 of the IC4, the pin 4 of the IC4 is also connected to the capacitor C34, the pin 6 of the pll IC2 is connected to the capacitor C41, the pin 8 of the pll IC2 is connected to the capacitor C60 and then to the pin 3 of the chip tcc 1, the pin 15 and the pin 10 of the IC2 are connected to the resistor R10, and the resistor R10 is connected to the pin 5 of the IC5 after the parallel capacitor C22 and the capacitor C33 are connected.
The circuit principle is as follows: the temperature compensation crystal oscillator circuit comprises a voltage control circuit consisting of a resistor R19, a resistor R20, a resistor R21, a resistor R22 and a capacitor C50, the frequency range of the crystal oscillator can be adjusted by externally applying direct current voltage to a VC port, a temperature compensation crystal oscillator circuit consisting of a chip temperature compensation crystal oscillator U1, a capacitor C58, a capacitor C15, a capacitor C60 and a resistor R28 provides a 20MHz reference signal source to be input to a phase-locked loop IC2 for phase reference, and a temperature compensation circuit is arranged in the chip temperature compensation crystal oscillator U1, so that the temperature drift characteristic can be compensated, and the frequency of the crystal oscillator is reduced to change along with the temperature change.
The 100MHz oscillation signal is frequency-selected and filtered by the frequency-selection filter circuit 5, then is input into the phase-locked loop IC2 to be compared with the phase of the 20MHz reference signal source, the 100MHz oscillation signal is stabilized, when the input 100MHz oscillation signal changes, the phase-locked loop IC2 outputs a phase difference signal, and the phase difference signal is changed into direct current regulated voltage to control the capacities of the diode D1 and the diode D2 through the voltage regulation control circuit 2, so that the oscillation frequency of the 100MHz voltage controlled crystal oscillation circuit 3 is changed, and the 100MHz oscillation signal is locked, amplified and shaped by the signal amplification and shaping circuit 4 and coupled and output through the capacitor C37.
To sum up: this paster temperature compensation crystal oscillation circuit utilizes 20 MHz's paster temperature compensation crystal oscillator U1 to pass through phase-locked loop circuit 6, locks 100MHz voltage-controlled crystal oscillation circuit 3 and outputs the high-frequency oscillation signal of 100MHz high stability, can improve crystal oscillator's temperature characteristic and frequency stability, consequently compares with digital temperature compensation, adopts paster temperature compensation crystal oscillator can simplify the circuit, further compresses crystal oscillator whole volume, improves phase noise, and adopt paster to shake can further improve crystal oscillator's shock resistance moreover, therefore can effectively solve prior art problem.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. The utility model provides a paster temperature compensation crystal oscillation circuit, includes 20MHz voltage-controlled temperature compensation reference source circuit (1), voltage regulation control circuit (2), 100MHz voltage-controlled crystal oscillation circuit (3), signal amplification shaping circuit (4), frequency-selecting filter circuit (5), phase-locked loop circuit (6) and LDO steady voltage supply circuit (7), its characterized in that: the 20MHz voltage-controlled temperature compensation reference source circuit (1) consists of a chip temperature compensation crystal oscillator U1, wherein a pin 1 of the chip temperature compensation crystal oscillator U1 is connected with a capacitor C69 and a resistor R22 which are connected in series, the resistor R22 is connected with a resistor R19 and a resistor R21 respectively, and the capacitor C50 and the resistor R20 which are connected in parallel, the resistor R19 is connected with 4V voltage, the resistor R21 is connected with a VC port, and a pin 4 of the chip temperature compensation crystal oscillator U1 is connected with a parallel capacitor C58, a capacitor C15 and a resistor R28 and then connected with 4V voltage;
the voltage regulation control circuit (2) is composed of a resistor R31, a capacitor C61, a resistor R32, a capacitor C67, a capacitor C15, a resistor R29, a capacitor C62, a resistor R11, a capacitor C46, a resistor R15, a diode D1 and a diode D2, wherein the resistor R31 is respectively connected with the resistor R29, the resistor R32 and the capacitor C61, the resistor R29 is respectively connected with the capacitor C62 and the resistor R11, the resistor R32 is connected with the parallel capacitor C67 and the capacitor C68, the resistor R11 is respectively connected with the capacitor C46 and the resistor R15, and the resistor R15 is respectively connected with the diode D1, the parallel diode D2 and the parallel resistor R18;
the 100MHz voltage-controlled crystal oscillation circuit (3) consists of an integrated chip IC1, wherein a pin 2 of the integrated chip IC1 is connected with a capacitor C28, the capacitor C28 is respectively connected with a capacitor C36, an inductor L11 and an inductor L8 which are connected in series, a pin 4 of the integrated chip IC1 is respectively connected with a capacitor C35, an inductor L9 and a capacitor C7 which are connected in series, meanwhile, the inductor L9 is respectively connected with a high-stability crystal J1, an inductor L6, a capacitor C17 and a capacitor C18 which are connected in parallel, and the high-stability crystal J1 is connected with the inductor L8;
the signal amplification and shaping circuit (4) consists of an integrated chip IC4, a pin 5 of the integrated chip IC4 is connected with a resistor R8 and a resistor R13 which are connected in series and then connected with +3.6V voltage, and a pin 4 of the integrated chip IC4 is connected with a capacitor C37 and then outputs 100MHz oscillation signals;
the frequency-selecting filter circuit (5) consists of a capacitor C34, a resistor R25, an inductor L1, an inductor L2, a capacitor C38 and a capacitor C41, wherein the capacitor C34 is connected with the resistor R25 and the inductor L1 which are connected in series, and the inductor L1 is respectively connected with the inductor L2, the capacitor C41 and the capacitor C38 which are connected in series;
the phase-locked loop circuit (6) consists of a phase-locked loop IC2 and a singlechip IC3, wherein a pin 5 of a phase-locked loop IC2 is connected with a capacitor C76, a capacitor C76 is connected with an inductor L5, a pin 7 of the phase-locked loop IC2 is connected with a capacitor C63, a capacitor C64, a capacitor C65 and a capacitor C66 which are connected in parallel, and then is connected with +3V voltage, a capacitor C66 is connected with the inductor L5, a pin 9 of the phase-locked loop IC2 is connected with the inductor L5 and is grounded, and a pin 10, a pin 13, a pin 12 and a pin 11 of an integrated chip IC2 are respectively connected with a pin 1, a pin 2, a pin 3 and a pin 5 of the integrated chip IC 3;
the LDO voltage-stabilizing power supply circuit (7) consists of an integrated chip IC5 and an integrated chip IC6, wherein a pin 1 of the integrated chip IC6 is connected with a capacitor C2 and is grounded, a pin 4 of the integrated chip IC6 is connected with a capacitor C8 and is grounded, a pin 5 of the integrated chip IC6 is connected with a capacitor C51 and a capacitor C1 which are connected in parallel and outputs 4V voltage, a pin 1 of the integrated chip IC5 is connected with a pin 3 of the integrated chip IC6, a diode D3, the capacitor C53, a capacitor C54 and a capacitor C56 which are connected in parallel and then connected with 5V voltage, and a pin 5 of the integrated chip IC5 outputs 4V voltage.
2. The patch temperature compensated crystal oscillator circuit of claim 1, wherein: the capacitor C36 is respectively connected with the diode D1, the diode D2 and the resistor R18 which are connected in parallel.
3. The patch temperature compensated crystal oscillator circuit of claim 1, wherein: the capacitor C7 is connected with the 2 pin of the IC4, and the 4 pin of the IC4 is also connected with the capacitor C34.
4. The patch temperature compensated crystal oscillator circuit of claim 1, wherein: and a pin 6 of the phase-locked loop IC2 is connected with the capacitor C41, and a pin 8 of the phase-locked loop IC2 is connected with a pin 3 of the patch temperature compensation crystal oscillator U1 after being connected with the capacitor C60.
5. The patch temperature compensated crystal oscillator circuit of claim 1, wherein: the pins 15 and 10 of the integrated chip IC2 are connected with a resistor R10, and after the resistor R10 is connected with a parallel capacitor C22 and a capacitor C33, the integrated chip IC5 is connected with the pin 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121371218.XU CN215528963U (en) | 2021-06-18 | 2021-06-18 | Paster temperature compensation crystal oscillation circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121371218.XU CN215528963U (en) | 2021-06-18 | 2021-06-18 | Paster temperature compensation crystal oscillation circuit |
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| Publication Number | Publication Date |
|---|---|
| CN215528963U true CN215528963U (en) | 2022-01-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121371218.XU Active CN215528963U (en) | 2021-06-18 | 2021-06-18 | Paster temperature compensation crystal oscillation circuit |
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| CN (1) | CN215528963U (en) |
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- 2021-06-18 CN CN202121371218.XU patent/CN215528963U/en active Active
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