CN208401812U

CN208401812U - Low-power consumption 32.768KHZ clock oscillator

Info

Publication number: CN208401812U
Application number: CN201821676088.9U
Authority: CN
Inventors: 胡华才
Original assignee: Heyuan Xingtong Time Frequency Electronic Co Ltd
Current assignee: Heyuan Xingtong Time Frequency Electronic Co Ltd
Priority date: 2018-10-16
Filing date: 2018-10-16
Publication date: 2019-01-18
Anticipated expiration: 2028-10-16

Abstract

The utility model relates to clock oscillator technical fields, and disclose low-power consumption 32.768KHZ clock oscillator, including shell, the shell includes base of ceramic and upper cover, bare die oscillation IC is fixedly connected at the center of the base bottom, the bare die oscillation IC is bound by gold thread to be connected to pedestal, and the top of the pedestal is connected and fixes with quartz plate, there are a conduction electrode in the front and back sides of the quartz plate, and the left side at the top of the quartz plate is fixedly connected with that there are two equally distributed conducting resinls.Low-power consumption 32.768KHZ clock oscillator, the quartz plate of 16.777216MHZ fixed frequency is cut as oscillation source by using AT, quartz plate and oscillation IC are placed in shell jointly, shell is divided into two cavitys, upper cavity is for building resonator quartz plate, and lower cavity is for building low-power consumption oscillation IC, such layout structure, the volume that product can be greatly reduced realizes the miniaturization of product.

Description

Low-power consumption 32.768KHZ clock oscillator

Technical field

The utility model relates to clock oscillator technical fields, specially low-power consumption 32.768KHZ clock oscillator.

Background technique

Clock frequency is the reference source that electronic product orderly works, and clock frequency is higher, represents the arithmetic speed of processor Faster, clock frequency is all the concept of microcosmic time for electronic product, such as millisecond, it is delicate, picosecond, and to people The discernmible chronomere of class is the second, therefore, specifically for clock frequency 32.768KHZ (tuning fork crystal) birth of time timing Raw, 32.768KHZ frequency is divided by 15 times 2, so that it may obtain 1 second.

With the extensive use of the development of electronics technology and electronic product in recent years, specifically for the clock frequency of time timing Rate has also obtained quick development, as long as having certain requirement to power consumption invariably however, being used for the product of timing, but big portion The clock frequency divided is excessively high in the prevalence of power consumption and volume is relatively large, is not able to satisfy existing market demand, we mention thus Low-power consumption 32.768KHZ clock oscillator is gone out to solve the above problems.

Utility model content

(1) the technical issues of solving

In view of the deficiencies of the prior art, the utility model provides low-power consumption 32.768KHZ clock oscillator, has volume It is small, it is low in energy consumption the advantages that, solve that most 32.768KHZ clock frequency is excessively high in the prevalence of power consumption and volume relatively Big problem.

(2) technical solution

To realize purpose above-mentioned small in size, low in energy consumption, the utility model is provided the following technical solutions: low-power consumption 32.768KHZ clock oscillator, including shell, the shell include base of ceramic and metal top cover, in the base bottom It is fixedly connected with oscillation IC, the oscillation IC at the heart to be connected to by binding gold thread with pedestal, is fixedly connected at the top of the pedestal There is a quartz plate, the tow sides of the quartz plate are connected with electrode, are fixedly connected with that there are two be uniformly distributed on the left of the quartz plate Conducting resinl, the electrode is connected to by conducting resinl with pedestal, and quartz plate is fixed, and is had on metal at the top of the shell Lid.

Preferably, the shape of the shell is cuboid, and pedestal is corrosion-resistant multilayer gold plated ceramic material, and upper cover is corrosion resistant Lose alloy material.

Preferably, the cross sectional shape of the pedestal forms upper and lower cavities in form of successively successively decreasing.

Preferably, the center of the central point and quartz plate of the electrode is overlapped, and the size of electrode is less than quartz plate Size.

Preferably, the upper cover is corrosion resisting alloy material, and the size of upper cover is adapted with the inner wall size of shell.

Preferably, the pedestal, oscillation IC, quartz plate and electrode central point on the same line.

Preferably, the shape of the quartz plate is cuboid, and the size of quartz plate is less than the size of pedestal.

(3) beneficial effect

Compared with prior art, the utility model provides low-power consumption 32.768KHZ clock oscillator, has following beneficial Effect:

1, low-power consumption 32.768KHZ clock oscillator cuts the crystal of 16.777216MHZ fixed frequency by using AT Piece vibrates IC as oscillation source, using Low-Power CMOS, and quartz plate and oscillation IC are placed in shell jointly, and shell is divided into two Cavity, upper cavity is for building resonator quartz plate, and lower cavity is for building low-power consumption oscillation IC, such layout structure, The volume that product can be greatly reduced realizes the miniaturization of product, simultaneously as quartz plate resonator can be into before not covering Line frequency fine tuning, greatly improves the frequency accuracy and stability of product, by above structure, it can be achieved that the small mesh of the device volume 's.

2, low-power consumption 32.768KHZ clock oscillator makes by using the quartz plate that AT cuts 16.777216MHZ frequency Its by 512 frequency dividing, low-power consumption vibrate IC technology, can by by the consumption current control of product within 10uA, common product Consumption electric current in 70uA, the power consumption of product is greatly reduced, since this product uses AT to cut 16.777216MHZ crystal Piece has good temperature curve, and without temperature-compensating, -40-85 DEG C can be easily done ± 30PPM Frequency accuracy, the working frequency stability of product is substantially increased, by above structure, it can be achieved that the low mesh of the device power consumption 's.

Detailed description of the invention

Fig. 1 is the utility model structure cross sectional front view；

Fig. 2 is structure top view in the utility model shell；

Fig. 3 is the utility model structure section view left view；

Fig. 4 is the utility model quartz plate and oscillation IC schematic diagram；

Fig. 5 is that the utility model vibrates IC internal circuit diagram.

In figure: 1 shell, 2 pedestals, 3 oscillation IC, 4 binding lines, 5 quartz plates, 6 electrodes, 7 conducting resinls, 8 upper covers.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work Every other embodiment obtained, fall within the protection scope of the utility model.

Please refer to Fig. 1-5, low-power consumption 32.768KHZ clock oscillator, including shell 1, shell 1 can be by internal structure and outer Boundary keeps apart, and guarantees stablizing and avoiding it by external influence for internal structure, the shape of shell 1 is cuboid, is divided into resistance to Corrode ceramic material pedestal 2 and upper cover 8, pedestal 2 can be that oscillation IC3 and quartz plate 5 provide support, and its position is maintained to stablize Property, the cross sectional shape of pedestal 2 forms two cavitys up and down in form of successively successively decreasing, fixes at the center of 2 bottom lower chamber of pedestal It is connected with oscillation IC3, oscillation IC3 is connected to, the upper cavity of pedestal 2 is fixedly connected with crystal by binding line 4 with the conducting of pedestal 2 Piece 5, the shape of quartz plate 5 is cuboid, and the size of quartz plate 5 is less than the size of pedestal 2, and 5 tow sides of quartz plate have Electrode 6, the central point of electrode 6 and being overlapped for the center of quartz plate 5, and the size of electrode 6 are less than the size of quartz plate 5, base Seat 2, oscillation IC3, quartz plate 5 and electrode 6 central point on the same line, the left side of quartz plate 5 is fixedly connected with that there are two The conducting resinl 7 of even distribution, conducting resinl 7 can guarantee the connective stability of tow sides electrode 6 and pedestal 2 on quartz plate, and can Pass through electric current, metal top cover 8 is arranged at the top of shell 1, and upper cover 8, which can facilitate, is put into shell 1 for each structure before shell 1 encapsulates It is interior, and can guarantee the airtightness of shell 1, upper cover 8 is corrosion resisting alloy material, and the inner wall ruler of the size of upper cover 8 and shell 1 It is very little to be adapted.

In conclusion low-power consumption 32.768KHZ clock oscillator, cuts 16.777216MHZ fixed frequency by using AT Quartz plate 5 be used as oscillation source, using Low-Power CMOS vibrate IC3, quartz plate 5 and oscillation IC3 be placed in shell 1 jointly, Shell 1 is divided to for two cavitys, upper cavity for building resonator quartz plate 5, lower cavity for building low-power consumption oscillation IC3, Such layout structure can greatly reduce the volume of product, realize the miniaturization of product, simultaneously as 5 resonator of quartz plate Can carry out frequency trim before not covering, greatly improve the frequency accuracy and stability of product, by above structure, it can be achieved that The small purpose of the device volume.

Low-power consumption 32.768KHZ clock oscillator makes it by using the quartz plate 5 that AT cuts 16.777216MHZ frequency By 512 frequency dividing low-power consumption vibrate IC3 technologies, can by by the consumption current control of product within 10uA, common product Electric current is consumed in 70uA, the power consumption of product is greatly reduced, since this product uses AT to cut 16.777216MHZ quartz plate 5, there is good temperature curve, without temperature-compensating, -40-85 DEG C can be easily done ± 30PPM's Frequency accuracy substantially increases the working frequency stability of product, by above structure, it can be achieved that the low mesh of the device power consumption 's.

It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment Intrinsic element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that There is also other identical elements in process, method, article or equipment including the element.

While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art, It is understood that these embodiments can be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaired Change, replacement and variant, the scope of the utility model is defined by the appended claims and the equivalents thereof.

Claims

1. low-power consumption 32.768KHZ clock oscillator, including shell (1), it is characterised in that: include pottery in the shell (1) Porcelain pedestal (2), bare die oscillation IC (3) is fixedly connected at the center of pedestal (2) bottom, and bare die oscillation IC (3) is logical It crosses golden binding line (4) to be connected to pedestal (2), be fixedly connected with quartz plate (5) at the top of the pedestal (2), the quartz plate (5) Tow sides are equipped with conduction electrode (6), are fixedly connected on the left of the quartz plate (5) there are two equally distributed conducting resinl (7), The electrode (6) is connected to conducting resinl (7), and the top movable of the shell (1) is connected with upper cover (8).

2. low-power consumption 32.768KHZ clock oscillator according to claim 1, it is characterised in that: the shape of the shell (1) Shape is cuboid and is corrosion-resistant multilayer gold plated ceramic material.

3. low-power consumption 32.768KHZ clock oscillator according to claim 1, it is characterised in that: the pedestal (2) is cut Face shape forms upper and lower cavities in form of successively successively decreasing.

4. low-power consumption 32.768KHZ clock oscillator according to claim 1, it is characterised in that: in the electrode (6) Heart point is overlapped with the center of quartz plate (5), and the size of electrode (6) is less than the size of quartz plate (5).

5. low-power consumption 32.768KHZ clock oscillator according to claim 1, it is characterised in that: the upper cover (8) is resistance to Resistant alloy material, and the size of upper cover (8) is adapted with the inner wall size of shell (1).

6. low-power consumption 32.768KHZ clock oscillator according to claim 1, it is characterised in that: the pedestal (2), vibration Swing the central point of IC (3), quartz plate (5) and electrode (6) on the same line.

7. low-power consumption 32.768KHZ clock oscillator according to claim 1, it is characterised in that: the quartz plate (5) is The rectangular shape of AT cut type, and the size of quartz plate (5) is less than the size of pedestal (2).