JPS63198210U - - Google Patents
Info
- Publication number
- JPS63198210U JPS63198210U JP8955487U JP8955487U JPS63198210U JP S63198210 U JPS63198210 U JP S63198210U JP 8955487 U JP8955487 U JP 8955487U JP 8955487 U JP8955487 U JP 8955487U JP S63198210 U JPS63198210 U JP S63198210U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- crystal oscillator
- mos
- input
- inverter
- 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.)
- Pending
Links
- 239000013078 crystal Substances 0.000 claims description 5
- 239000003990 capacitor Substances 0.000 claims description 3
- 230000010355 oscillation Effects 0.000 claims description 3
- 230000000295 complement effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 5
- 230000003321 amplification Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
Description
第１図はこの考案の一実施例を示す回路図、第
２図は第１図の等価回路図、第３図は抵抗ＲＬ―
周波数Ｆの特性図、第４図はこの考案の他の実施
例を示す回路図、第５図はＣ―ＭＯＳインバータ
を増幅器として用いたコルピツツ型水晶発振回路
図である。
ＩＮＶ１……増幅段Ｃ―ＭＯＳインバータ、Ｉ
ＮＶ２……出力段（バツフア）Ｃ―ＭＯＳインバ
ータ、Ｘｔａｌ……水晶振動子、Ｒｆ……帰還抵
抗、ＣＧ，ＣＤ……コンデンサ、ＳＥ……低イン
ピーダンス回路。
Fig. 1 is a circuit diagram showing an embodiment of this invention, Fig. 2 is an equivalent circuit diagram of Fig. 1, and Fig. 3 is a resistor RL-
A characteristic diagram of the frequency F, FIG. 4 is a circuit diagram showing another embodiment of this invention, and FIG. 5 is a Colpitts type crystal oscillation circuit diagram using a C-MOS inverter as an amplifier. INV 1 ...Amplification stage C-MOS inverter, I
NV2 ...Output stage (buffer) C-MOS inverter, Xtal...Crystal resonator, Rf ...Feedback resistor, CG, CD...Capacitor, SE...Low impedance circuit.
Claims (1)
ンバータの入出力端間に、水晶振動子と帰還抵抗
を接続するとともに、Ｃ―ＭＯＳインバータの入
出力端と接地間にコンデンサを接続したコルピツ
ツ型発振回路を設け、この発振回路のＣ―ＭＯＳ
インバータの入力端と接地間に、直流電流をしや
断する素子からなる低インピーダンス回路を接続
したことを特徴とするオーバートーン水晶発振回
路。 (2) 前記低インピーダンス回路は抵抗とコンデ
ンサからなる直列回路で構成した実用新案登録請
求の範囲第１項に記載のオーバートーン水晶発振
回路。[Claims for Utility Model Registration] (1) A crystal oscillator and a feedback resistor are connected between the input and output terminals of a C-MOS inverter consisting of complementary MOSFETs, and between the input and output terminals of the C-MOS inverter and ground. A Colpitts type oscillation circuit connected to a capacitor is provided, and the C-MOS of this oscillation circuit is
An overtone crystal oscillator circuit characterized in that a low impedance circuit consisting of an element that cuts off direct current is connected between the input end of an inverter and ground. (2) The overtone crystal oscillator circuit according to claim 1, wherein the low impedance circuit is constituted by a series circuit consisting of a resistor and a capacitor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8955487U JPS63198210U (en) | 1987-06-10 | 1987-06-10 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8955487U JPS63198210U (en) | 1987-06-10 | 1987-06-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63198210U true JPS63198210U (en) | 1988-12-20 |
Family
ID=30948644
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8955487U Pending JPS63198210U (en) | 1987-06-10 | 1987-06-10 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63198210U (en) |
-
1987
- 1987-06-10 JP JP8955487U patent/JPS63198210U/ja active Pending
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