Crystal Oscillator is an Electronics Oscillator circuit which uses the mechanical resonance of a vibrating crystal of piezoelectric material to generate an electrical signal with an accurate frequency. It also has automatic amplitude control and frequency drift is also very low due to change in temperature. Crystal Oscillators are only suitable for high-frequency application.
Every microcontroller needs a crystal oscillator, whenever selecting a crystal oscillator try to purchase silicon oscillator if the accuracy is adequate and the cost is also acceptable, otherwise choose quartz crystal.
Technical details
- 18pF of Load Capacitance
- Frequency Tolerance(Ƹf/f) range is ± 30ppm
- Frequency Temperature Stability range is ±50ppm
- Resonance Resistance 40ohms (max)
- Oscillation mode: Fundamental mode
- Shunt Capacitance less than 7pF
- Drive Level less than 100µW
- Operating Temperature Range: -20 to + 70°C
- Operable Temperature Range: -25 to + 85°C
- Storage Temperature Range: -55 to + 125°C
- Insulation Resistance: 500 M ohms
Applications
- Used in frequency synthesizers
- Used in special types of receivers
- Used as crystal clock in microprocessors
- Colpitts Crystal Oscillator Application
- Armstrong Crystal Oscillator
- Military and Aerospace
- Radio and TV transmitters
