JPS6181005A - Oscillating circuit - Google Patents

Abstract

PURPOSE:To prevent the degradation of characteristics of an oscillator by constituting an input-side load capacity and an output-side load capacity with input-side and output-side fixed capacitor parts and variable capacitor parts and removing a conductor layer of variable capacitor parts at least to adjust the oscillated frequency. CONSTITUTION:In case of adjustment of the oscillated frequency of a crystal oscillator, a conductor layer 26 appearing in a through hole 27a of a top dielectric layer 27 is removed by the sand blast method or the like to reduce capacity values of input-side and output-side variable capacitors 14 and 15 of the oscillating circuit. The difference between capacity values in the input side and the output side is maximum 3PF though a nozzle (omitted in the figure) of a sand blast device is moved from one end side to the other of the through hole 27a, and the difference between said capacity values is reduced if the nozzle is moved minutely to the right and the left from the center. Since the difference between capacity values in the input side and the output side of the oscillating circuit is reduced in this manner, the power source voltage frequency characteristic of the crystal oscillator is improved.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Orientation) The present invention (device of crystal generators etc. used in Hijisha Yamuki 04, etc.) (one row where Tatsu≠1).

(Prior Art) A conventional art is disclosed in Japanese Patent Laid-Open No. 57-26905 filed by the applicant '2I. According to this technique, the oscillation frequency is adjusted by reducing the capacitance of only the variable capacitor section connected to the input side of the oscillation circuit.

(Top point while the invention is trying to solve the problem) As a result, the capacity of the i5T converter/capacitor section is greatly reduced.
There has been a point where the input measurement load characteristics and output measurement characteristics of the LFC increase and the output circuit have become greatly unbalanced, and a point has arisen where the special order of the source selection frequency has become inferior.

(Means for Solving the Problems) The present invention provides a fixed chip with an input load capacity of 1 law, an output load capacity of 100, and a fixed chip having a long shape by laminating a good conductor layer and a dielectric layer. It is purchased from the department and variable;/denosa department.

(Effect) Ko V = sea urchin input side town! Capacitor section and output! Since the difference between the capacitor section and the capacitor section is equal to that of the capacitor section, unbalance will not occur if the difference between the input-side load capacitance and the output-side load capacitance is large. This custom made oscillator will never deteriorate.

(≠Another example) In Figs. 1 to 5 KR, each seal 41 includes an airtight terminal 3 in which a plurality of terminal bins are fixed in a close layer with an airtight glass 2, and a hermetically sealed terminal by cold-open pressure welding or the like to this airtight terminal. Excreted cap 4
It is composed of. A retaining spring 7.8 is fixed to the upper end K of the retaining terminal pins 15, 6 in a sealed container 1 yen with conductive cutting or the like. A crystal oscillator 9 is supported by a conductive eyepiece or the like behind the holding spring 7.8, and the holding terminals 15.6 are electrically connected to the n-ions 9a and 9b, respectively. On the top surface of the airtight terminal 3, there is an oscillation circuit that is placed inside the sealed container 1 to oscillate the crystal resonator 9, and a frequency dividing circuit that divides the frequency of the signal. The included integrated circuit element 10 is a contact crusher.

Then, the valley pad portion of the integrated direct circuit device 10 is wire-bonded to each terminal pin of the hermetic terminal 3. A PCB 11 is provided in the concave portion 5a at the bottom of the terminal 50, and is fixed to a predetermined terminal pin for electrical conduction by contacting and cutting at 4°C. The wiring board 11 has a shape B5F in which one conductor layer and a dimple layer are laminated on a ceramic board, and it connects the terminal pins to each other, and also connects the fixed capacitor 12 on the input side of the oscillator circuit shown in Figure 5, and the output side. 1 separate foot capacitor 15, input 1-11 variable capacitor 14, and output side variable co/def. 15 are provided. 16 is a feedback resistance %, and 17 is an 11-no-parter.

Here, the wiring board 11 will be explained in detail with reference to FIGS. 4 to 15. The substrate 18 is made of alumina porcelain, steatite porcelain, etc., and has cutouts 18a, 18b, .
8j is the formation. The output terminal pins 19 a and 19 b of the airtight terminal 6 correspond to the notches 18 a and 18 b, and the holding terminal pin 5 corresponds to the notch 118 c. In addition, the notch 18d has an X T quadruple pinot 19 (but the notch fli
18e corresponds to VBe terminal pin/19d. Furthermore, notch e18f.

The first layer gVc corresponds to the other mold/19θ, 19f, and the notch 18hlcl-j corresponds to the holding terminal B/6, and the notch 18- corresponds to the XT terminal B/19g.
The VDD terminal bin 19h corresponds to the hole e18j. The substrate 18 includes a conductor layer 20, a dielectric layer 21, and
Conductor 1d22, dielectric) I423. ) A J body J layer 24, a dielectric layer 25, a conductor layer 26, and a dielectric layer 27 are laminated to reveal the dawn. Conductor; φ20.22, 24.2
6 is ffl containing fine powder of tanogsten as 4 bodies?
! paste? It is printed and formed. Also, the dielectric layer 21
, 25, 25, 277 The dielectric paste containing fine powder of alumina porcelain or the like is pressed and shaped. The 4-body layer 20 (C1 shown in FIG. and fa
Together with hw6, it serves as one pole of the input side fixed capacitor 12. Also; a notch 18n in the pole 20b.

18i is attached to the dirt-retaining end, child bottle 6 and deT Koko Pino 19
g and the output 1μ1L8ill constant 2/
It is 'r & Buddha on one side of de/su 13. conductor layer 20
Kidnapped at the top of the page! : A layer 21 is depicted, and six bodies 22 are depicted above it. The conductor layer 22 has a through hole J in the center.
, (22a is shown as 1, and an extension fi 22b is formed to be connected to the vDD terminal pin/19h. The conductor 22 is connected to the fixed capacitor 12 of the input side j2, the fixed capacitor 12 of the output middle, and the 1,000m of i3. The dielectric 1 (
) 25 is formed, and a conductor layer 24 having the same shape as the one-piece layer 20 is formed on top of it.

dE;*24 ii%124af'! It serves as the other t-pole of the input-side fixed core 97''j12, and also serves as the electrode of the input-side variable capacitor 14.

1f'c terminal 24b (besides the output side fixed capacitor 15, it also serves as the Z electrode and the output side variable capacitor 1
It is the electrode of 5. A dielectric 1j25 is formed on the top of the conductor layer 24, and a conductor I trap 26 is formed on top of the dielectric 1j25. An extension cap 26a is formed on the one-piece layer 26 to serve as the other electrode of the input 1t1.11 and the output side = 1 change tip 14.15, and connect it to the VDD terminal pin z19hK. . The upper part 1 (formed) of the conductor rc126 has seven through holes 27a in the center, and these through holes are the same as the through holes 22a of the conductor layer 22.
It has a cedar shape. The above 6 bodies are 1st west, and the lure body is the 15th one.
As shown in the figure, the input III Ii! ll'i
Co/De/S 1 con 4 pieces td 20 (r) electrode 20 a
, conductor rgi 22 sr
, and the body 421r23. The constant output side fixed capacitor 13 is composed of an electrode 20b of the conductor layer 20, Tl1i*2'b of the four-layer conductor layer 24, and a dielectric material 21.25 located behind these electrodes. a. Both fixed capacitors 12.15 above are connected to the intermediate vm
The four-body layer 22 that resists α to the terminal and the conductor layers 20 and 24 located above and below form a four-dragon shape 5y, and the conductor layer 2
0.24 are connected at the outer periphery. Input side variable capacitor 14 4 body j-24 power +! 124a, conductor l violet 2
62L is formed from the dielectric layer 25 located in the dark side of these, and the output side 1 town change capacitor'l5jPi conductor layer 24 is formed from the electrode 24b14 body + 6262 wire. Ru. Both oI variable capacitors 14
．． 1'5 is the top dielectric 27+ii 7)
rL, the conductor It! exposed through the hole 27a! 26
It is possible to reduce the number of shifts required by sandblasting and other methods. In this example, fixed capacitor 1 on the input side
2 and variable capacitor 14, the value is about 30PF
K is set, and the variable capacitance 11i corresponds to the through hole 27a of the variable cap/tenosa 14! is set to 5PF.

The fixed capacitor 15 and the variable capacitor 15 on the output side each have a single capacitance.

The non-inventiveness is the above configuration, and the operation is always a curse. When the oscillation frequency of the crystal oscillator is adjusted, the conductor j-26 exposed through the hole 27aL of the top layer dielectric l-27 is removed by sandblasting, etc., and the input side of the oscillation circuit is And this is done by decreasing the capacitance value of the variable capacitors 14 and 15 on the output side. Even on a platform where the nozzle (not shown) of the blasting device is moved from one end of the through-hole section 27a to the other end, the difference in capacitance between the input side and the output side is at most 3PF. ;Distribute to EE million and fine □
The difference in appearance will be even smaller if the platform is designed to do □□. In this way, the difference in capacitance between the input 41+1 and the output side of the oscillation circuit can be reduced, so
F pressure frequency 吋Note 4 is good. In addition, since the 4 rd26 parts of the top TJ sokono are all removed and adjusted, the machining power of sandblasting -a+a can be reduced, and -j can be shortened during adjustment, reducing the possibility of short circuits.

Matasa] Teikokonnosa +2. +3 Nakayama] conductor layer 22
<, The C hole part 27a corresponding to the adjustment part of the variable condenser 714.15 and the one-shaped through hole part 22a are not working, and the gate that is made in the blasting device R; %
Dielectric 1・Δ25, conductor 1ψ24 Even on a platform with 6 layers of bottom 1 & 1, 2.4 body layers 24.2Qj 1fl-
Because it is yi, the gQ value changes (there is no jin. For this reason, even if it is too deep (1111') in 4 sei, the 4 xi 1 side will change to tai / net and it will be impossible to adjust.ζ In the two actual examples, 8 pieces of paste were used, but materials containing fine powders such as molytubu/manga/ and field conductor powder may also be used; ζ Nabeest's ``Hot water, porcelain, crow, etc.'', powder all the way.

(Effects of the invention) The IC of the present invention: First, it is possible to reduce M at each end of the load on the input side and output side of the oscillation circuit, and the power supply voltage frequency and time characteristics can be improved. Do it, and the possibility of a short circuit is new/lower.

[Brief explanation of the drawing]

, Side A shows all examples of non-inventions, Figure 1 is a cross-sectional view, Figure 2 is a bottom view, Figure 3 is a circuit diagram, Figure 4 is an enlarged front view of the number of wiring bases, and Figure 5.7. Figure 9.11 is an enlarged front view of the converter 1, Figures 6.8 and 10, Figures 6.10 and 12 are enlarged front views of the dielectric 1, and 13-A (41st main point). - Bottle line enlarged sectional view, 9...Crystal recessed girl 11...J base 12...Input side constant Ninodenser 15...Output 1111 fixed; /Capacitor 14...Input side OJf capacitor 1n...output 11+157 odd/, voice'!, 20.2
2,24.26...Conductor jI3! i21.25,25.
27...Dioxide layer or above

Claims (1)

[Claims] A piezoelectric vibrator, an oscillation circuit for oscillating the piezoelectric vibrator, and an input-side load capacitor and an output-side load capacitor connected to the input side and the output side of the oscillation circuit are provided, The above input side load capacity and output side load capacity are respectively,
It consists of a fixed capacitor section on the input side and output side, which has a multilayer conductor layer and a dielectric layer, and a variable capacitor section on the input side and output side in the upper part, and at least the conductor layer of the variable capacitor section is removed. An oscillator characterized in that the oscillation frequency is adjusted by adjusting the oscillation frequency.