2021年电子专业英语Lesson8ClockSources.ppt

Lesson 8 Clock Sources
Backgrounds
Text tour
Language in use
Vocabulary
Structure
Reading/writing techniques
Date
1
电子专业英语Lesson 8 Clock Sources
Terminology
Oscillator
TCXO, PLL, VCO
Detector
Backgrounds
Date
2
电子专业英语Lesson 8 Clock Sources
Terminology
Date
3
电子专业英语Lesson 8 Clock Sources
Oscillator 振荡器
Resonant 谐振的
Series Resonant 串联谐振
Parallel Resonant 并联谐振
Resonating frequency 谐振频率
Oscillator
Date
4
电子专业英语Lesson 8 Clock Sources
TCXO: Temperature Compensated Crystal Oscillator
温度补偿晶体振荡器
PLL: Phase Locked Loop
锁相环
VCO: Voltage Controlled Oscillator
压控振荡器
TCXO, PLL, VCO
Date
5
电子专业英语Lesson 8 Clock Sources
detector ，检波器，探测元件
phase detector , 相位检测器
frequency detector , 频率检测器
Detector
Date
6
电子专业英语Lesson 8 Clock Sources
Outline
Clock Devices
Crystals, Crystal Oscillators, Compensated Oscillators, Voltage Controlled Oscillator, Frequency Synthesizers, Clock Buffers
Clock Parameters
Clock Jitter, Skew, Tolerance/Accuracy, Stability, Aging, Slew, Duty Cycle
Text tour
Date
7
电子专业英语Lesson 8 Clock Sources
A basic piezoelectric quartz crystal
Two kinds of crystals
Series Resonant
Parallel Resonant
Clock DevicesCrystals
Date
8
电子专业英语Lesson 8 Clock Sources
An oscillator with the crystal as the feedback element
Provides the most accurate and stable output frequency.
The preferred clock source in most high-speed digital systems requiring clocks.
Clock DevicesCrystal Oscillators
Date
9
电子专业英语Lesson 8 Clock Sources
Try to adjust the variation in frequency due to temperature and voltage
Temperature Compensating Oscillators (TCXO)
Clock DevicesCompensated Oscillators
Date
10
电子专业英语Lesson 8 Clock Sources