JPS5991709A - Crystal oscillating circuit - Google Patents
Crystal oscillating circuitInfo
- Publication number
- JPS5991709A JPS5991709A JP20105082A JP20105082A JPS5991709A JP S5991709 A JPS5991709 A JP S5991709A JP 20105082 A JP20105082 A JP 20105082A JP 20105082 A JP20105082 A JP 20105082A JP S5991709 A JPS5991709 A JP S5991709A
- Authority
- JP
- Japan
- Prior art keywords
- oscillation
- crystal
- circuit
- oscillating circuit
- stable
- 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.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
- H03L3/00—Starting of generators
-
- 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
- H03B5/30—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator
- H03B5/32—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator being a piezoelectric resonator
- H03B5/36—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator being a piezoelectric resonator active element in amplifier being semiconductor device
- H03B5/364—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator being a piezoelectric resonator active element in amplifier being semiconductor device the amplifier comprising field effect transistors
-
- 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
- H03B2200/00—Indexing scheme relating to details of oscillators covered by H03B
- H03B2200/006—Functional aspects of oscillators
- H03B2200/0082—Lowering the supply voltage and saving power
Landscapes
- Oscillators With Electromechanical Resonators (AREA)
- Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明（ｒ、１安定な発振を短時間で実現することがで
きるＭｏｓ簗積目積回路いた水晶発振回路に関するもの
である。DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention relates to a crystal oscillation circuit including a Mos oscillation circuit that can realize stable oscillation in a short time.
（（ｉｒｉ来例の４１゛４成とその問題点）従来の水晶
発４最回路は第１図に示すように、ＰヂャネルＭＯ８＋
・ランジスタ１とＮチャネルＭＯ８）ランジスタ２とよ
りガるインバータの入力端子３と出力端子４との間に水
晶振動−ｒ５、発振容量６及び７を結合して所定の発振
出力を得るが、水晶１辰動子５の発振立上りが遅く、ウ
メッチ、クロック等の水晶発振回路で最も普及している
３２，７６８ Ｈｚの水晶振動子を用いた水晶発振回路
では、安定な発振状態に達するまでに４秒乃至５秒を要
し、例えば、検査工程では時間がかかっていた。なお図
中、８は発振帰還抵抗、９は電源である。((IRI's conventional 41-4 circuit and its problems) The conventional crystal 4-channel circuit is a P channel MO8+ as shown in Figure 1.
・Crystal oscillation -r5 and oscillation capacitors 6 and 7 are coupled between transistor 1 and N-channel MO8) transistor 2 and the input terminal 3 and output terminal 4 of the inverter to obtain a predetermined oscillation output. 1 The oscillation rise of the oscillation element 5 is slow, and in a crystal oscillation circuit using a 32,768 Hz crystal oscillator, which is the most popular type of crystal oscillation circuit for Umetch, clocks, etc., it takes 4 Hz to reach a stable oscillation state. For example, the inspection process was time consuming, taking between 1 and 5 seconds. In the figure, 8 is an oscillation feedback resistor, and 9 is a power supply.
（発明の目的）
本発明は上記の難点を解決し、水晶振動子の安定発振に
達する立上り時間を短縮することを目的とするものであ
る。(Objective of the Invention) An object of the present invention is to solve the above-mentioned difficulties and to shorten the rise time required to reach stable oscillation of a crystal resonator.
（発明の構成）
本発明は、２組の水晶発振回路を具備し、一方の水晶発
振回路で発振状態にした水晶振動子を、スイッチ、リレ
ー等を介して他方の水晶発振回路に切換え接続する構成
の水晶発振回路であり、これにより、他方の水晶発振回
路の立上り時間を大幅に短縮しようとするものである。(Structure of the Invention) The present invention comprises two sets of crystal oscillation circuits, and the crystal resonator brought into oscillation by one crystal oscillation circuit is switched and connected to the other crystal oscillation circuit via a switch, relay, etc. This is a crystal oscillation circuit with a configuration of one crystal oscillation circuit, which is intended to significantly shorten the rise time of the other crystal oscillation circuit.
（実施例の説明）
第２図は本発明による水晶発振回路の一実施例の１１゛
♂Ｉ成を示す回路構成図で、１及び１′はＰチャネルＭ
Ｏ８ｌ・ランジスタ、２及び２′はＮチャネル１ＭＯ８
）ランジスタで１と２及び】′と２′はそれぞれインバ
ータを構成し、３及び３′は入力端子、４及び・１′は
出力端ｒ〜、８及び８′は発振帰還抵抗であり、そｈぞ
れ第１及び第２の発振回路（ａ）及び（ｂ）を構成し、
（Ｃ）は水晶振動−ｒ−５と発振容量６及び７と発振回
路切換えリレー１０を有する回路である。(Description of Embodiment) FIG. 2 is a circuit configuration diagram showing an 11゛♂I configuration of an embodiment of the crystal oscillation circuit according to the present invention, and 1 and 1' are P-channel M
O8l transistor, 2 and 2' are N channel 1MO8
) transistors 1 and 2 and ]' and 2' constitute an inverter, 3 and 3' are input terminals, 4 and 1' are output terminals r~, and 8 and 8' are oscillation feedback resistors; h forming first and second oscillation circuits (a) and (b), respectively;
(C) is a circuit having a crystal oscillation -r-5, oscillation capacitors 6 and 7, and an oscillation circuit switching relay 10.
まず、発振回路切換えリレーｌＯを第１の発振回路（ａ
）側に切換え接続しておき、第１の水晶発振回路を形成
して水晶振動子５を安定状態にしておく。First, the oscillation circuit switching relay lO is connected to the first oscillation circuit (a
) side to form a first crystal oscillation circuit and keep the crystal resonator 5 in a stable state.
このとき第２の発振回路（ｂ）には電源電圧を供給１〜
ておく。At this time, the second oscillation circuit (b) is supplied with the power supply voltage 1 to
I'll keep it.
次にＩＪＩ／−１０により第１の発振回路（ａ）により
水晶振動子５が発振状態を維持している間に回路（Ｃ）
を第２の発振回路（ｂ）側に切換えると、第２の水晶発
振回路を形成し、発振回路（ｂ）による水晶振動子５の
安定発振に到達する立上り時間が著しく短縮できること
になる。すなわち、水晶振動子５を発振回路（ａ）によ
り予め発振状態にしであること及びリレー１０の切換え
時のトリガーも加わって安定な発振が短時間に得られ出
力端イ４′より出力される。Next, while the crystal resonator 5 maintains the oscillation state by the first oscillation circuit (a) using IJI/-10, the circuit (C)
By switching to the second oscillation circuit (b) side, a second crystal oscillation circuit is formed, and the rise time for the oscillation circuit (b) to reach stable oscillation of the crystal resonator 5 can be significantly shortened. That is, by setting the crystal resonator 5 in an oscillating state in advance by the oscillation circuit (a) and by adding a trigger when switching the relay 10, stable oscillation is obtained in a short time and is output from the output terminal 4'.
このように、３２．７６８ Ｈｚの水晶振動子を用いた
従来のＭＯ８型発振回路では安定な発振出力を得るのに
４秒〜５秒かかっていたものが、本発明の回路構成を用
いると予備発振を必υとするが、所望の安定発振出力を
短時間に効率よく得ることができる。しかもリレー１０
の切換えに要する時間０．００５秒〜０．０１秒とリレ
ー切換え期間に起る水晶振動−ｒ−出力振幅低下による
安定発振出力回復時間０．０５秒〜０．１秒であり、リ
レー１０をｌｕＪ換えてから合計０．５５秒〜０．１１
秒で安定な発振出力が出力端イ４′より得られる。In this way, with the conventional MO8 type oscillation circuit using a 32.768 Hz crystal resonator, it took 4 to 5 seconds to obtain a stable oscillation output, but with the circuit configuration of the present invention, it takes less than 4 to 5 seconds to obtain a stable oscillation output. Although oscillation is required, the desired stable oscillation output can be efficiently obtained in a short time. Moreover, relay 10
The time required for switching is 0.005 seconds to 0.01 seconds, and the time required to recover the stable oscillation output due to the drop in crystal vibration-r output amplitude that occurs during the relay switching period is 0.05 seconds to 0.1 seconds. Total time since changing luJ: 0.55 seconds to 0.11
A stable oscillation output is obtained from the output terminal A4' in seconds.
第３図は本発明の他の実施例の回路構成図で、第２図に
おける発振容量６及び７が水晶振動子５と隣接して回路
（ｃ）内に設けられていたものを発振回路（ａ）及び（
ｂ）にそれぞれ６，７及び６’、７’として設は同様な
効果を得るようにしだものである。FIG. 3 is a circuit configuration diagram of another embodiment of the present invention, in which the oscillation capacitors 6 and 7 in FIG. a) and (
The same effect can be obtained by setting 6, 7 and 6', 7' in b), respectively.
（発明の効果）
以上説明したように、本発明は、発振立」ニリを急峻に
する心変があるあらゆる水晶発振回路に、利用すること
ができ、丑だ、水晶発振回路を含むＭＯ８集積回路の検
査にこの回路構成を用いれば、検査時間のう、１ノ縮が
ｉ」能で量産性の向上等の］−業師価値は極めて人とな
るという効果がある。１(Effects of the Invention) As explained above, the present invention can be applied to any crystal oscillation circuit that has a change of heart that causes the oscillation to rise steeply. If this circuit configuration is used for inspection, the inspection time can be reduced by 1 inch, and mass productivity can be improved. 1
第１図は従来の水晶発振回路の回路構成図、第２図は本
発明による水晶発振回路の一実施例の回路構成図、第３
図は本発明の他の実施例の回路構成図である。
１．１′ ・・・ ＰチャネルＭＯ８）ランージスタ
、２．２′ ・ Ｎチー１・オルＭＯ８）ランジス
ク、３．３’ ・・・・ 入力端−ｊ７．． ４．４
’・ ・ 出力部ニーｒ１５ ・・ 水晶振動子、
６．７ ・・・・・・ 発振容量、８．８′ ・・・
発振帰還抵抗、 ９・・−・・電源。
第１図
工工
第２図
第３図FIG. 1 is a circuit configuration diagram of a conventional crystal oscillation circuit, FIG. 2 is a circuit configuration diagram of an embodiment of a crystal oscillation circuit according to the present invention, and FIG.
The figure is a circuit configuration diagram of another embodiment of the present invention. 1.1'...P-channel MO8) Ranjistor, 2.2'/N-chie 1-or MO8) Ranjisku, 3.3'...Input terminal -j7. ．． 4.4
'・・Output section knee r15・・Crystal oscillator,
6.7 ...... Oscillation capacitance, 8.8' ...
Oscillation feedback resistor, 9...Power supply. 1st drawing 2nd drawing 3rd drawing
Claims (2)
をイｊし、−・方の水晶発振回路で振動状態にある水晶
振動子を、他方の水晶発振回路に切換え接続して動作す
るようにしたことを特徴とする水晶発振回路。(1) Two sets of crystal oscillation circuits that share one crystal oscillation r are connected, and the crystal oscillator that is in a vibrating state in one crystal oscillation circuit is switched and connected to the other crystal oscillation circuit to operate. A crystal oscillation circuit characterized by:
ことを特徴とする特許請求の範囲第（１）項記・１（（
の水晶発振回路。(2) The crystal oscillation circuits of the second introduction each have an oscillation capacitance.
crystal oscillation circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20105082A JPS5991709A (en) | 1982-11-18 | 1982-11-18 | Crystal oscillating circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20105082A JPS5991709A (en) | 1982-11-18 | 1982-11-18 | Crystal oscillating circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5991709A true JPS5991709A (en) | 1984-05-26 |
| JPH056362B2 JPH056362B2 (en) | 1993-01-26 |
Family
ID=16434563
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20105082A Granted JPS5991709A (en) | 1982-11-18 | 1982-11-18 | Crystal oscillating circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5991709A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010084838A1 (en) | 2009-01-23 | 2010-07-29 | ローム株式会社 | Oscillator circuit |
| WO2015065734A1 (en) * | 2013-10-28 | 2015-05-07 | Qualcomm Incorporated | An ultra low-power high frequency crystal oscillator for real time clock applications |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51123044A (en) * | 1975-04-21 | 1976-10-27 | Hitachi Ltd | Starting circuit in the oscillation circuit |
-
1982
- 1982-11-18 JP JP20105082A patent/JPS5991709A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51123044A (en) * | 1975-04-21 | 1976-10-27 | Hitachi Ltd | Starting circuit in the oscillation circuit |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010084838A1 (en) | 2009-01-23 | 2010-07-29 | ローム株式会社 | Oscillator circuit |
| US8232847B2 (en) | 2009-01-23 | 2012-07-31 | Rohm Co., Ltd. | Oscillation circuit |
| WO2015065734A1 (en) * | 2013-10-28 | 2015-05-07 | Qualcomm Incorporated | An ultra low-power high frequency crystal oscillator for real time clock applications |
| US9112448B2 (en) | 2013-10-28 | 2015-08-18 | Qualcomm Incorporated | Ultra low-power high frequency crystal oscillator for real time clock applications |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH056362B2 (en) | 1993-01-26 |
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