Start-Up Acceleration of Quartz Crystal Oscillator Using Active Inductance Double Resonance and Embedded Triggering Circuit

• 作者: Akira Kudo Tetsuya Akitsu Tomio Sato
• 来源期刊: 传感技术(英文)
• 学科: 工学
• 关键词: Double Resonance Quartz Crystal OSCILLATOR ACTIVE INDUCTANCE
• 年，卷（期）: 2015,（1）
• 页码范围: 15-27
• 页数: 13页
• 分类号: TN7

摘要

Low-frequency double-resonance quartz crystal oscillator was developed with active inductance circuit aiming the start-up of stable oscillation of tuning fork-type quartz crystal resonator at 32.768 kHz within 0.37 ms. The initial oscillation is triggered by a part of crystal oscillator forming a CR oscillator. The negative resistance ranges to 4 MΩ at gmf of 4.1 μA/V. In a limited frequency range, the circuit shows negative reactance Ccci = -3.4 pF equivalent to inductance Lcc = 9.8 H. The Allan standard deviation indicated 10-11 to 10-10, showing high stability comparable to general quartz crystal oscillator.