OSCILLATOR CIRCUIT

• Main Author: MIYAHARA TAKESHI
• Format: Patent
• Language: English; Japanese
• Published: 12.10.2017
• Subjects: AUTOMATIC CONTROL, STARTING, SYNCHRONISATION, OR STABILISATIONOF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES; BASIC ELECTRONIC CIRCUITRY; ELECTRICITY; PULSE TECHNIQUE

PROBLEM TO BE SOLVED: To provide an oscillator circuit, operating under a high-temperature environment, capable of suppressing degradation in a component.SOLUTION: An oscillator circuit 1 includes: an oscillator 40 for outputting an oscillation signal of a frequency corresponding to an input frequency setting value; a phase error counter 101 for counting the number of pulses of an oscillation signal within a period corresponding to a period of a reference signal input from the outside; and a setting value creation part 20 for creating a frequency setting value for each predetermined period on the basis of the number of pulses counted by the phase error counter 101.SELECTED DRAWING: Figure 1 【課題】高温の環境下で動作する発振回路において、構成部品の劣化を抑制する。【解決手段】発振回路１は、入力された周波数設定値に対応する周波数の発振信号を出力する発振器４０と、外部から入力される基準信号の周期に対応する期間内の発振信号のパルス数をカウントする位相誤差カウンタ１０１と、位相誤差カウンタ１０１がカウントしたパルス数に基づいて、所定の期間ごとに周波数設定値を生成する設定値生成部２０と、を有する。【選択図】図１