"模拟集成电路中的振荡器设计与分析: Chapter 14"

Chapter 14-Oscillators.ppt discusses the analysis and design of analog integrated circuits, particularly focusing on oscillators. The presentation introduces the Barkhausen criteria, which is a set of conditions that must be met for a circuit to oscillate. It states that a negative-feedback circuit must have a loop gain that satisfies specific conditions, including the phase shift. The circuit may oscillate at a particular frequency, and to account for variations in temperature and process, the loop gain is typically chosen to be at least twice or three times the required value. The presentation also explores ring oscillators, which are circuits that generate oscillations based on the maximum frequency-dependent phase shift. The total phase shift is limited to 270 degrees, which is smaller than the 360-degree requirement for oscillation. This limitation is important to consider when designing and analyzing ring oscillators. In summary, Chapter 14-Oscillators.ppt provides a comprehensive overview of the principles and considerations for analyzing and designing oscillators in analog integrated circuits, including the Barkhausen criteria and the limitations of ring oscillators. This knowledge is crucial for engineers and designers working in the field of analog integrated circuits, as it forms the basis for creating stable and reliable oscillation circuits.