ABM8W-33.3333MHZ-7-K1Z-T3

Series:	ABM8W
Packaging:	Tape & Reel (TR)
Part Status:	Active
Type:	MHz Crystal
Frequency:	33.3333MHz
Frequency Stability:	±50ppm
Frequency Tolerance:	±10ppm
Load Capacitance:	7pF
ESR (Equivalent Series Resistance):	50 Ohms
Operating Mode:	Fundamental
Operating Temperature:	-40°C ~ 125°C
Ratings:	--
Mounting Type:	Surface Mount
Package / Case:	4-SMD, No Lead
Size / Dimension:	0.126" L x 0.098" W (3.20mm x 2.50mm)
Height - Seated (Max):	0.030" (0.75mm)

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Crystals

Crystals are essential components for dozens of electronic products. Their application fields cover communication, telecommunication, measurement, instrumentation, and industrial control, etc. Among various types of crystals, ABM8W-33.3333MHZ-7-K1Z-T3 is a kind of crystal oscillator operaing at a frequency of 33.3333 MHZ.

Application Field

The ABM8W-33.3333MHZ-7-K1Z-T3 crystal oscillator is mainly used in short range communication, such as Bluetooth, WiFi and Zigbee. This crystal is also applied in various kinds of control systems, such as motion control systems, electrical control systems and proton control systems etc.In communication and telecommunication industry, the ABM8W-33.3333MHZ-7-K1Z-T3 crystal oscillator can be used as the master clock from frequency synthesizer in radio base station. It is also used in frequency reference and signal generation for IC signal in digital modulation etc. In addition, the ABM8W-33.3333MHZ-7-K1Z-T3 crystal oscillator is suitable for some applications requiring true high stability, such as mobile communication and wireless data transmission applications.

Working Principle

To understand the working principle of the ABM8W-33.3333MHZ-7-K1Z-T3 crystal oscillator, it would be helpful to start with a brief introduction of crystal oscillators.Crystal oscillators are basically composed of three parts: crystal resonator, amplifier, and feedback loop. Crystal oscillators operate according to the principle of positive feedback. The crystal resonator inside the oscillator works like a frequency filter. It allows only the desired frequency of signals to be outputted; while, other frequencies will be discarded. Then, the amplifier amplifies the signal from crystal resonator and the output of amplifier is then coupled with the input by the feedback loop and sent back to the crystal resonator. The process will be repeated, thus, maintaining oscillations of desired frequency.For ABM8W-33.3333MHZ-7-K1Z-T3 crystal oscillator, the amplified output from the amplifier is fed back to the crystal resonator with an additional sinusoidal waveform of 33.3333 MHZ. This waveform is sometimes referred to as "carrier wave." To display proper oscillation, the phase of the waveform should be properly adjusted. The phase of waveform is adjusted with phase shifter. Overtime, due to phase drift, the phase shifter should be readjusted to maintain desired phase of the waveform.

Conclusion

The ABM8W-33.3333MHZ-7-K1Z-T3 crystal oscillator is mainly used in short range communication and various kinds of control systems. This crystal oscillator works according to the principle of positive feedback and the waveform of this oscillator should be properly adjusted with phase shifter. The phase should also be readjusted overtime due to phase drift so as to maintain the desired phase of waveform.

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