JPS60145720U - Digitally controlled piezoelectric oscillator circuit - Google Patents
Digitally controlled piezoelectric oscillator circuitInfo
- Publication number
- JPS60145720U JPS60145720U JP3462084U JP3462084U JPS60145720U JP S60145720 U JPS60145720 U JP S60145720U JP 3462084 U JP3462084 U JP 3462084U JP 3462084 U JP3462084 U JP 3462084U JP S60145720 U JPS60145720 U JP S60145720U
- Authority
- JP
- Japan
- Prior art keywords
- oscillator circuit
- piezoelectric oscillator
- digitally controlled
- controlled piezoelectric
- variable capacitance
- 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
Landscapes
- Oscillators With Electromechanical Resonators (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は従来のディジタル制御形圧電発振回路の構成図
、第２図はこの考案によるディジタル制御形圧電発振回
路の構成図、第３図はこの考案による回路の容量素子部
分における一部の等価回路による説明図、第４図はこの
考案による回路の容量素子部分における一部のＭＯ３回
路による構成図、第５図はこの考案における雑音除去の
効果を示すスペクトラム図である。
１１・・・・・・増幅回路、１２・・・・・・圧電振動
子、１３・・・・・・可変容量素子、１４・・・・・・
出力端子。Fig. 1 is a block diagram of a conventional digitally controlled piezoelectric oscillator circuit, Fig. 2 is a block diagram of a digitally controlled piezoelectric oscillator circuit according to this invention, and Fig. 3 is a partial equivalent of the capacitive element part of the circuit according to this invention. FIG. 4 is a configuration diagram of a part of the MO3 circuit in the capacitive element portion of the circuit according to this invention, and FIG. 5 is a spectrum diagram showing the effect of noise removal in this invention. 11...Amplification circuit, 12...Piezoelectric vibrator, 13...Variable capacitance element, 14...
Output terminal.
Claims (1)
部からのディジタル信号により発振周波数を制御する圧
電発振回路において、前記可変容量素子はコンデンサと
半導体スイッチの直列回路の複数個が並列に接続されて
構成され、少つその半導体スイッチに並列に抵抗として
の機能を有する素子が接続されていることを特徴とする
ディジー タル制御形圧電発振回路。In a piezoelectric oscillator circuit that is composed of a piezoelectric vibrator, an amplifier circuit, and a variable capacitance element and whose oscillation frequency is controlled by an external digital signal, the variable capacitance element is composed of a plurality of series circuits of a capacitor and a semiconductor switch connected in parallel. 1. A digitally controlled piezoelectric oscillator circuit characterized in that an element having a function as a resistor is connected in parallel to the semiconductor switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3462084U JPS60145720U (en) | 1984-03-09 | 1984-03-09 | Digitally controlled piezoelectric oscillator circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3462084U JPS60145720U (en) | 1984-03-09 | 1984-03-09 | Digitally controlled piezoelectric oscillator circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60145720U true JPS60145720U (en) | 1985-09-27 |
Family
ID=30538159
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3462084U Pending JPS60145720U (en) | 1984-03-09 | 1984-03-09 | Digitally controlled piezoelectric oscillator circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60145720U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005529536A (en) * | 2002-06-10 | 2005-09-29 | ジーシーティー セミコンダクター インコーポレイテッド | LC oscillator with wide tuning range and low phase noise |
| JPWO2013136766A1 (en) * | 2012-03-12 | 2015-08-03 | セイコーエプソン株式会社 | Voltage controlled oscillator, signal generator, and electronic device |
-
1984
- 1984-03-09 JP JP3462084U patent/JPS60145720U/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005529536A (en) * | 2002-06-10 | 2005-09-29 | ジーシーティー セミコンダクター インコーポレイテッド | LC oscillator with wide tuning range and low phase noise |
| JPWO2013136766A1 (en) * | 2012-03-12 | 2015-08-03 | セイコーエプソン株式会社 | Voltage controlled oscillator, signal generator, and electronic device |
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