摘要
在CSMC 0.5μm混合工艺下,采用开关控制法设计了一种三角波振荡器。输出的三角波周期为1.25μs,并且生成大小10.5μA,在-50~150℃温漂系数为-161.2ppm/℃和大小21.5μA,温漂为145ppm/℃的恒流源。该振荡器具有可重用性高的优点。实验结果表明该振荡器能输出845k Hz的三角波振荡波形,在700KHz-1000KHz之间都可正常工作。电路性能满足使用要求。
A triangular wave oscillator circuit controlled with switching method was designed based CSMS0. 5μm technological process. The simulation results show the period of output triangular wave is 1. 25μs, and the generated constant current was 10. 5 μA with-161.2ppm/℃ temperature drift coefficient, and 21.5 μA with 145ppm/℃ between-50 and 150 ℃. The designed oscillator has the merit of high reusability. Experimental results show that this oscillator can generate triangular oscillating wave with the frequency of 845kHz,and can normally operate in the range of frequency between 700KHZ-1000KHZ. The electrical performances can satisfy the requirements of application.
出处
《自动化与仪器仪表》
2017年第1期126-129,共4页
Automation & Instrumentation
关键词
振荡器
恒流源
电源抑制比
波形
温漂系数
oscillator
constant current source
power supply rejection ratio
waveform
temperature drift coefficient
