【摘要】 文章分析了电流舵逻辑门的动/静态特性。为了比较电流舵环形振荡器和普通数字反相器环形振荡器,采用1.2μm标准CMOS工艺,设计并制作了两种环形振荡器。仿真和试验结果表明,电流舵环形振荡器具有低噪声和频率不随电压变化的特点,但其功耗比较大,适合于噪声要求高而功耗要求不高的电路。更多还原

【Abstract】 Both static and dynamic characteristics of current steering logic (CSL) are analyzed in the paper. Ring oscillators composed of CSL’s and conventional digital inverters, which are fabricated in 1.2 μm CMOS process, are compared for their differences. It can be concluded from the simulation and experimental results that ring oscillators based on CSL have good noise performance and are more immune from supply voltage fluctuation, except that it consumes more power. Therefore, the CSL-based ring oscillator is suitable for low noise applications.更多还原