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- 川島 宏文
- セイコー電子部品株式会社
書誌事項
- タイトル別名
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- Oscillation Frequency Characteristics in a CMOS Oscillator Circuit Using a New Shape GT Cut Quartz Crystal Resonator
- シン ケイジョウ GT カット スイショウ シンドウシ オ モチイタ CMOS
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This paper describes oscillation frequency characteristics in a CMOS oscillator circuit using a new shape GT cut quartz crystal resonator. It is well-known that a new shape GT cut quartz crystal resonator manufactured by an etching process has more excellent frequency temperature behavior than the conventional GT plate manufactured by a mechanical process. However, as this GT resonator is a coupling resonator, its frequency temperature behavior varies with load capacitance C_L of the circuit. The object of this paper is to clarify the relationship of oscillation frequency and frequency temperature coefficients versus load capacitance C_L. The noteworthy features are summarized as follows: 1) Since the GT resonator has the phase difference of 180 degree between principal vibration and subvibration, coupling capacitance C_m has a negative value. As a result, the first order temperature coefficient α_+ decreases according to decrease of load capacitance C_L, because coupling factor Km becomes small. 2) The optimum load capacitance C_L gives a zero temperature coefficient for α_+. Therefore, it is shown that an oscillator circuit is obtained with frequency deviation less than 1 ppm over a wide temperature range of -30℃ to +70℃. 3) Oscillation frequency increases as load capacitance C_L decreases.
収録刊行物
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- 日本時計学会誌
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日本時計学会誌 137 (0), 20-36, 1991
一般社団法人 日本時計学会
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詳細情報 詳細情報について
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- CRID
- 1390001206570267264
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- NII論文ID
- 110002775891
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- NII書誌ID
- AN00195723
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- ISSN
- 24321915
- 00290416
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- NDL書誌ID
- 3808965
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- NDL
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可