Lesson06PerformanceParameters电子技术专业英语教程

1、Unit 2 Operational Amplifier,Lesson 6 Performance Parameters 电子技术专业英语教程冯新宇 主编 电子工业出版社 ,2020/11/23,电子技术专业英语教程,2,Lesson 6 Performance Parameters,Backgrounds Text tour Language in use Vocabulary Structure Reading/writing techniques,2020/11/23,电子技术专业英语教程,3,Terminology negative feedback负反馈 unity-gain单位增益

2、 closed-loop gain闭环增益 open-loop gain开环增益 input offset voltage输入失调电压,Backgrounds,2020/11/23,电子技术专业英语教程,4,Text tour,Outline Overview Finite gain Bandwidth Input Offset Voltage Slew rate common-mode rejection ratio (CMRR),2020/11/23,电子技术专业英语教程,5,For mathematical calculations, the ideal open-loop gain i

3、s infinite; however, it is finite in real operational amplifiers. 100,000 to over 1 million,Finite gain,2020/11/23,电子技术专业英语教程,6,Bandwidth,Bandwidth is usually defined as the unity-gain frequency.,2020/11/23,电子技术专业英语教程,7,The input offset voltage is seen to be typically 1mV, but can go up to as high a

4、s 6mV.,Input Offset Voltage,2020/11/23,电子技术专业英语教程,8,Slew rate,Slew rate is defined as the maximum rate at which the op-amps output voltage changes in the presence of a large input signal. It can be expressed as,2020/11/23,电子技术专业英语教程,9,The CMRR can be defined as,common-mode rejection ratio (CMRR),AVD

5、: Gain in differential mode,Avc: Gain in common mode,2020/11/23,电子技术专业英语教程,10,Vocabulary oscillation, stability, merit, desire Structure,Language in use,2020/11/23,电子技术专业英语教程,11,Vocabulary,2020/11/23,电子技术专业英语教程,12,Oscillation in dictionary,振动性 oscillation theorems for linear second order differentia

6、l equations 二阶线性微分方程的振动性定理 振动 AN OSCILLATION THEOREM 一个振动定理 震荡 From Equilibrium to Oscillation 从平衡点到振荡,2020/11/23,电子技术专业英语教程,13,Oscillation in text,First, associated with the bandwidth limitation is a phase difference between the input signal and the amplifier output that can lead to oscillation in

7、some feedback circuits. 在很多反馈通路中，结合有限带宽的性质，如果放大器两端输入信号的相位不同，输出将产生震荡。,2020/11/23,电子技术专业英语教程,14,Oscillation in use,initial oscillation 最初摆动 aperiodic oscillation非周期性震荡 differential oscillation 差速震荡 circular oscillation 弧形振动,2020/11/23,电子技术专业英语教程,15,Stability in dictionary,The state or quality of being

8、 stable, especially: 稳定：稳定的状态或性能，尤指： Resistance to change, deterioration, or displacement. 稳定性：防止变化、恶化或移位的稳定性 Constancy of character or purpose; steadfastness. 性格或毅力坚定；坚决 Reliability; dependability. 可信性；可靠性,2020/11/23,电子技术专业英语教程,16,Stability in text,The internal frequency compensation used in some o

9、p-amps to increase the gain or phase margin intentionally reduces the bandwidth even further to maintain output stability when using a wide variety of feedback networks. 当应用在范围较广的反馈网络中时，在运算放大器内部能够增加增益或者相位裕度的频率补偿会降低带宽来进一步维持输出的稳定性。,2020/11/23,电子技术专业英语教程,17,Stability in use,lattice stability 晶格稳定性 stat

10、ical stability 静态稳定性 chromosomal stability 染色体稳定性,2020/11/23,电子技术专业英语教程,18,Merit in dictionary,Superior quality or worth; excellence: 价值：卓越的品质或价值；优秀之处 A quality deserving praise or approval; virtue: 优点：值得表扬赞赏的品质；美德 Demonstrated ability or achievement: 显示出的能力或功绩 Often merits An aspect of character or behavior deserving approval or disapproval: 常作 merits 功过：优缺点应予赞许或否定的性格方面或行为 Theology Spiritual credit granted for good works. 【神学】 给予好作品的精神荣誉,2020/11/23,电子技术专业英语教程,19,Merit in text,The common-mode rejection ratio is an important figure of merit for operational amplifiers. 共模抑制比是运算放大器中重要的性能参