关键词: RC振荡器；可调节；高精度；频率

Abstract: Based on the common RC oscillator circuit structure, this paper designs an adjustable high-precision oscillator circuit, through the reference current mirror multiple configuration, to achieve the size of the charging current adjustment, so as to achieve high-precision frequency control. Through simulation, a high precision oscillator circuit is designed to achieve the expected output center frequency of 1.7 MHz and the minimum adjustable precision of 1 kHz. The results show that the design idea of this paper achieves high precision control of oscillatory circuits.

Key words: RC oscillator; adjustable; high precision; frequency