CN207354247U - Oscillator trims device - Google Patents
Oscillator trims device Download PDFInfo
- Publication number
- CN207354247U CN207354247U CN201721450539.2U CN201721450539U CN207354247U CN 207354247 U CN207354247 U CN 207354247U CN 201721450539 U CN201721450539 U CN 201721450539U CN 207354247 U CN207354247 U CN 207354247U
- Authority
- CN
- China
- Prior art keywords
- frequency
- superregenerative
- oscillators
- test
- module
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)
Abstract
The utility model discloses a kind of device that trims of oscillator, including superregenrative reception chip and test, recording device, test, recording device are used to send test, programming signal to superregenrative reception chip and trim information to frequency trimming module transmission frequency；Frequency trimming module is connected with memory and superregenerative LC oscillators, the resonant frequency range for read-write memory and adjustment superregenerative LC oscillators；Superregenerative LC oscillators are connected with frequency division module, for sending frequency of oscillation to frequency division module；Frequency division module, for receiving the frequency of oscillation of superregenerative LC oscillators, sends to test, recording device after the frequency of oscillation is divided.Oscillator provided by the utility model trims device, is substituted manually using automatic test, recording device, and comprehensive cost is low compared to traditional approach, and can realize that resonant frequency in batch production is high-precision and the purpose of high uniformity.
Description
Technical field
It the utility model is related to integrated circuit fields, and in particular to a kind of oscillator trims device.
Background technology
Superregenerative receiver is that a kind of speed of the Induction Peried according to superregenerator is strong and weak come identified input signal
Device, superregenerator generally uses LC oscillators.The Induction Peried of superregenerator is generally by the strong of input signal
Difference, the electrical characteristics of superregenerative LC oscillators in itself between weak, input signal frequency and superregenerative LC alternator resonant frequencies
The Multiple factors such as parameter together decide on.In the case where the electrical characteristic parameter of superregenerative LC oscillators in itself is identical, input signal
Frequency and superregenerative LC alternator resonant frequencies between difference it is smaller, more can identify fainter input signal, so as to carry
High receiving sensitivity.Most wireless signal transmission is all to use specific frequency, such as 315M hertz, 433.92M hertz
Deng, when the difference between superregenerative LC alternator resonants frequency and the specific frequency is smaller, the easier starting of oscillation of superregenerator,
It can more identify fainter input signal, receiving sensitivity is also higher.
The resonant frequency of superregenerative LC oscillators is：F=1/ [2 π (LC) 0.5].
In order to reduce the difference between superregenerative LC alternator resonants frequency and selected specific frequency as far as possible, in traditional reality
In the batch production of border, the L (inductance) of superregenerative LC oscillators is placed on chip exterior, which uses controllable impedance, in order to ensure
The precision and uniformity of this frequency-splitting, pass through the adjustable electric of each product of manual adjustment in traditional production in batch production
The inductance value of sense reaches this purpose.But such a method needs substantial amounts of manpower, to the organizational capacity, production environment, work of producer
Make that the requirements such as duration are very high, and manual method can not guaranteed quality uniformity and stability, yield is subject to the number of worker
Measure and degree of being skilled in technique, cost are also high.
Utility model content
In view of the deficiencies of the prior art, the main purpose of the utility model is that：It is proposed a kind of oscillator trims device
To ensure the precision and uniformity of the difference in batch production between superregenerative LC alternator resonants frequency and the specific frequency, use
Automatic test, recording device are artificial to substitute, so as to lift product yield, reduce comprehensive cost.
To realize object defined above, on the one hand, the utility model discloses a kind of device that trims of oscillator, including superregenerative
Chip and test, recording device are received, the superregenrative reception chip includes frequency trimming module, superregenerative LC oscillators, divides
Frequency module, memory；
Specifically：
Test, recording device are used to send test, programming signal and send to frequency trimming module to trim information；
Frequency trimming module is connected with memory and superregenerative LC oscillators, for adjusting the resonance of superregenerative LC oscillators
Frequency range；
Superregenerative LC oscillators are connected with frequency division module, for sending frequency of oscillation to frequency division module；
Frequency division module, for receiving the frequency of oscillation of superregenerative LC oscillators, will the frequency of oscillation frequency dividing after send to
Test, recording device；
Wherein, the memory still can preserve information after powering down chips.
Preferably, the superregenerative LC oscillators include main vibration circuit, capacitor array module, off-chip capacitive sense.
Preferably, the superregenerative LC oscillators include main vibration circuit, capacitor array module, inductance and segment chip dispatch from foreign news agency
Hold array.
Preferably, frequency trimming module adjusts the frequency of superregenerative LC oscillators by adjusting the capacitance of capacitor array.
Preferably, the type of memory includes OTP, MTP, EEPROM.
On the other hand, the invention also discloses a kind of method for repairing and regulating of oscillator, comprise the following steps：
S1. test, recording device are transmitted into the signal of test pattern, superregenrative reception chip to superregenrative reception chip
After receiving the test mode signal, into test pattern；
S2. in test mode, superregenerative LC oscillators are changed into persistent oscillation from the gap oscillatory regime under normal mode
State, produces higher-order of oscillation frequency；
S3. after the divided module frequency dividing of the higher-order of oscillation frequency, rate-adaptive pacemaker is reduced to test, recording device；
S4. the frequency values that test, recording device are sent according to the superregenrative reception chip, produce the pre- information that trims and send
To frequency trimming module；
S5. the frequency trimming module is according to the pre- frequency for trimming information and adjusting the superregenerative LC oscillators, and
Test, recording device will be returned to after the divided module frequency dividing of frequency after adjustment；
S6. test, recording device judge whether the frequency values of the return reach range of target frequencies, if so, then to super
Regenerative reception chip is transmitted into the signal of burning pattern, and superregenrative reception chip enters burning pattern；If it is not, then return to step
S4；
S7. under burning pattern, current frequency is trimmed into information and is burnt in memory；
S8. when chip works normally, the frequency read in memory trims information, is adjusted by frequency trimming module super
Regenerate the frequency of LC oscillators.
Preferably, after burning success, before step S8, the frequency of repetition measurement superregenerative LC oscillators is further included.
Preferably, the frequency is trimmed information by frequency trimming module and is burnt in memory by test, recording device.
Compared with prior art, the utility model has the advantage of：A kind of oscillator trims disclosed in the utility model
Device and method, using ensureing superregenerative LC alternator resonants frequency and specific frequency in batch production by the way of trimming automatically
The precision and uniformity of difference between rate, are also heightening the precision of the frequency after trimming using pre- method for repairing and regulating in trimming automatically
And uniformity, so as to lift the yield of product；And superregenrative reception chip internal related circuit is simple in structure, reduces chip
The scale and complexity of circuit, can reduce the cost of chip；Substituted manually, compared using automatic test, recording device
Traditional test mode, can also reduce comprehensive cost.
Brief description of the drawings
Fig. 1 is that a kind of oscillator disclosed in one exemplary embodiments of the utility model trims schematic device；
Fig. 2 is a kind of signal of superregenrative reception chip normal operating conditions disclosed in one exemplary embodiments of the utility model
Flow diagram；
Fig. 3 is superregenerative LC oscillator knots in a kind of superregenrative reception chip disclosed in one exemplary embodiments of the utility model
Structure schematic diagram.
Embodiment
In view of deficiency of the prior art, inventor is able to propose that this practicality is new through studying for a long period of time and largely putting into practice
The technical solution of type.The technical solution, its implementation process and principle etc. will be further explained as follows.
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, is further elaborated the utility model.It should be appreciated that specific embodiment described herein is only explaining this
Utility model, is not used to limit the utility model.
Fig. 1 is that a kind of oscillator disclosed in one exemplary embodiments of the utility model trims schematic device, the device bag
Superregenrative reception chip and test, recording device are included, the superregenrative reception chip includes frequency trimming module, superregenerative LC shakes
Swing device, frequency division module, memory；
Test, recording device are used to send test, programming signal and send to frequency trimming module to trim information；
Frequency trimming module is connected with memory and superregenerative LC oscillators, for adjusting the resonance of superregenerative LC oscillators
Frequency range；
Superregenerative LC oscillators are connected with frequency division module, for sending frequency of oscillation to frequency division module；
Frequency division module, for receiving the frequency of oscillation of superregenerative LC oscillators, will the frequency of oscillation frequency dividing after send to
Test, recording device；
Wherein, the memory still can preserve information after powering down chips, and OTP, MTP, EEPROM can be selected in memory
Etc. type.
Correspondingly, using trimming device and can use following method for repairing and regulating shown in Fig. 1, specifically include：
S1. test, recording device are transmitted into the signal of test pattern, superregenrative reception chip to superregenrative reception chip
After receiving the test mode signal, into test pattern；
S2. in test mode, superregenerative LC oscillators are changed into persistent oscillation from the gap oscillatory regime under normal mode
State, produces higher-order of oscillation frequency；
S3. after the divided module frequency dividing of the higher-order of oscillation frequency, frequency is dropped into certain value and is exported to test, burning
Equipment；
S4. the frequency values that test, recording device are sent according to the superregenrative reception chip, carry out data processing, produce
One trims information in advance and sends to frequency trimming module；
S5. frequency trimming module trims the frequency that information adjusts the superregenerative LC oscillators according to, and will adjustment
Back to test, recording device after the divided module frequency dividing of frequency afterwards；
S6. test, recording device judge whether the frequency values of the return reach range of target frequencies, if so, then to super
Regenerative reception chip is transmitted into the signal of burning pattern, and superregenrative reception chip enters burning pattern；If it is not, then return to step
S4；
S7. under burning pattern, current frequency by frequency trimming module is trimmed information and is burnt to by test, recording device to be deposited
In reservoir；
S8. when chip works normally, the frequency read in memory trims information, is adjusted by frequency trimming module super
Regenerate the frequency of LC oscillators.
Preferably, after burning success, before step S8, the frequency of repetition measurement superregenerative LC oscillators is further included.
Wherein, step S4~S6 belongs to pre- and trims process, trims refer to trim information final and formally burn in memory in advance
Before record, a series of corresponding frequencies are trimmed using certain algorithm by information and directly control frequency trimming module, and are obtained according to this
To corresponding frequencies come select one group it is optimal trim information after, then this optimal information that trims formally is burnt to memory
In.It is pre- trim can to avoid OTP or other types of memories energy and can only burning once or seldom time the defects of caused core
Piece respective frequencies precision and uniformity cannot reach optimal situation, and the method can farthest ensure chip corresponding frequencies
Precision and uniformity, so as to lift the yield of product.
Fig. 2 is one kind disclosed in one exemplary embodiments of the utility model in the case where superregenrative reception chip works normally
Signal flow diagram, after chip power-up, memory is repaiied test, the frequency adjustment information stored under burning pattern by frequency
Mode transfer block controls superregenerative LC oscillators, makes the resonant frequency of superregenerative LC oscillators in particular range, thus reach from
The dynamic purpose trimmed.
Fig. 3 for one kind disclosed in one exemplary embodiments of the utility model in superregenrative reception chip concept figure, wherein, surpass again
Raw LC oscillators are by off-chip capacitive sense L, the module such as main vibration circuit and capacitor array composition, the resonant frequency of superregenerative LC oscillators
For：
F=1/ [2 π (LC) 0.5]
After off-chip capacitive sense L is selected, superregenerative LC oscillators can be realized by adjusting the capacitance of capacitor array Cx
The precision and uniformity of resonant frequency, so as to achieve the purpose that to trim automatically.
It should be noted that specific embodiment of the above only as the utility model, must not be considered as to the utility model
Limitation, by suitably adjusting change, should all be included within the scope of protection of this utility model, including but not limited to will
It is outer etc. that inductance L is integrated in chip slapper, the partition capacitance in capacitor array Cx is arranged on chip.
Oscillator disclosed in the utility model trims device and method, and superregenerative LC oscillators are adjusted by trimming in advance
Capacitance realize adjusting resonant frequency, so as to fulfill high receiving sensitivity；Also, pre-adjusted frequency adjustment information
Storage in memory, in the case of chip normal use, is trimmed automatically by reading the parameter in memory, is come real
Existing resonant frequency is high-precision and the purpose of high uniformity, so as to lift the yield of product.Superregenrative reception chip internal is accordingly electric
Road, as long as retaining most basic vibration and control circuit, and is completed the information on algorithm by automatic test equipment, is reduced
The scale and complexity of chip circuit, can reduce the cost of chip；People is substituted using automatic test, recording device
Work, also reduce further comprehensive cost.
It should be appreciated that above-described embodiment is only the technical concepts and features for illustrating the utility model, it is ripe its object is to allow
The content of the utility model can be understood and implement according to this by knowing the personage of technique, can not limit the utility model with this
Protection domain.All equivalent change or modifications made according to the utility model Spirit Essence, should all cover in the utility model
Within protection domain.
Claims (6)
1. a kind of oscillator trims device, it is characterised in that：Described device includes superregenrative reception chip and test, burning are set
Standby, the superregenrative reception chip includes frequency trimming module, superregenerative LC oscillators, frequency division module, memory；
Test, recording device are used to send test, programming signal to superregenrative reception chip and send frequency to frequency trimming module
Rate trims information；
Frequency trimming module is connected with memory and superregenerative LC oscillators, for read-write memory and adjustment superregenerative LC vibrations
The resonant frequency range of device；
Superregenerative LC oscillators are connected with frequency division module, for sending frequency of oscillation to frequency division module；
Frequency division module, for receiving the frequency of oscillation of superregenerative LC oscillators, will the frequency of oscillation frequency dividing after send to test,
Recording device；
Wherein, the memory still can preserve information after powering down chips.
2. oscillator according to claim 1 trims device, it is characterised in that：The superregenerative LC oscillators include master
Shake circuit, capacitor array module, off-chip capacitive sense.
3. oscillator according to claim 1 trims device, it is characterised in that：The superregenerative LC oscillators include master
Shake circuit, capacitor array module, inductance and the outer capacitor array of segment chip.
4. oscillator according to claim 1 trims device, it is characterised in that：The type of memory include OTP,
MTP、EEPROM。
5. oscillator according to claim 2 trims device, it is characterised in that：The frequency trimming module passes through adjusting
The frequency of the capacitance adjustment superregenerative LC oscillators of capacitor array.
6. oscillator according to claim 3 trims device, it is characterised in that：The frequency trimming module passes through adjusting
The frequency of the capacitance adjustment superregenerative LC oscillators of capacitor array.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721450539.2U CN207354247U (en) | 2017-11-03 | 2017-11-03 | Oscillator trims device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721450539.2U CN207354247U (en) | 2017-11-03 | 2017-11-03 | Oscillator trims device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207354247U true CN207354247U (en) | 2018-05-11 |
Family
ID=62353550
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721450539.2U Active CN207354247U (en) | 2017-11-03 | 2017-11-03 | Oscillator trims device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207354247U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107659309A (en) * | 2017-11-03 | 2018-02-02 | 苏州华芯微电子股份有限公司 | Oscillator trims device and method |
-
2017
- 2017-11-03 CN CN201721450539.2U patent/CN207354247U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107659309A (en) * | 2017-11-03 | 2018-02-02 | 苏州华芯微电子股份有限公司 | Oscillator trims device and method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103546294B (en) | Entrance guard authorization method, device and equipment | |
| CN105530629B (en) | Realize the method and mobile terminal of communication of mobile terminal connection | |
| CN207354247U (en) | Oscillator trims device | |
| CN105050112B (en) | Network access method and mobile terminal | |
| CN100468930C (en) | Magnetic bead selection method for preventing electromagnetic interference power filter | |
| CN107659309A (en) | Oscillator trims device and method | |
| CN106443304B (en) | For detecting the device and method of primary metering CT secondary side circuit state outside ammeter | |
| CN107527442A (en) | A kind of article shared system and sharing method | |
| CN107452368A (en) | The noise-reduction method and device of a kind of home appliance | |
| EP3918729B1 (en) | Bidirectional configuration of sensor nodes with mobile telephone without expansion | |
| CN110504726A (en) | The structure parameter optimizing method and device of wireless charging magnetic coupling device | |
| CN102243284A (en) | Method for detecting micro-short-circuit of wound type battery | |
| CN104065530A (en) | Automatic testing method and system of powerline adapter | |
| CN107369856A (en) | Battery record management system | |
| CN104267290A (en) | Calibration and verification method for electric power management IC | |
| CN103298045B (en) | A kind of method and apparatus controlling cell reselection | |
| CN108540244A (en) | Pre emphasis factor test method, device and communication equipment | |
| CN107682787A (en) | Speakers fit method and apparatus for vehicle audio | |
| CN112052930A (en) | Block chain-based electronic tag production method and electronic tag card | |
| CN110493072A (en) | Bandwidth filtering method, device, server and storage medium based on deep learning | |
| CN105636080A (en) | Bluetooth test method and system | |
| CN205563123U (en) | Control panel and control system | |
| CN107205210A (en) | Collocation method, device, system and the computer program of wireless network node | |
| CN107948709A (en) | The output parameter method to set up and system of a kind of set-top box | |
| CN106357882A (en) | A Smartphone Approach Wakeup Device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |