Frequency Stability:	±25ppm
Current - Supply (Disable) (Max):	4.1mA
Height - Seated (Max):	0.032" (0.80mm)
Size / Dimension:	0.126" L x 0.098" W (3.20mm x 2.50mm)
Package / Case:	4-SMD, No Lead
Mounting Type:	Surface Mount
Ratings:	--
Current - Supply (Max):	4.5mA
Operating Temperature:	-40°C ~ 125°C
Series:	SiT8918
Voltage - Supply:	3.3V
Output:	LVCMOS, LVTTL
Function:	Enable/Disable
Frequency:	24.576MHz
Type:	XO (Standard)
Base Resonator:	MEMS
Part Status:	Not For New Designs
Packaging:	Tape & Reel (TR)

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Introduction

Oscillators are electronic frequency generators used to generate periodic alternating voltage or current waveforms from an initial input signal. The SIT8918AA-22-33E-24.576000E oscillator is an oscillator produced by Southern Instruments that is widely used in many industrial and consumer applications. In this article, we\'ll discuss the application field and working principle of the SIT8918AA-22-33E-24.576000E oscillator.

Application Field

The SIT8918AA-22-33E-24.576000E oscillator is often used in a variety of applications which require an accurate and reliable frequency source to control and measure various processes. The most common applications are in clocks and timing circuits, for navigation, aircraft guidance and missile control systems, for medical device monitoring, for radio and telecommunications equipment, as well as in industrial process control systems.

Working Principle

The SIT8918AA-22-33E-24.576000E oscillator operates on the principle of a crystal oscillator circuit. A quartz crystal is connected to a circuit that is able to convert its mechanical vibrations into a signal with regular oscillating frequency at the terminals of the circuit. The quartz crystal used in the oscillator must have a low enough drive level to easily produce the required oscillation frequency. The crystal used in the SIT8918AA-22-33E-24.576000E must have a frequency resolution of 0.00001 Hz.The oscillator circuit comprises of a tuning tank circuit, an amplifier, a level shifter and a differential amplifier. The tuning tank circuit contains a capacitor and an inductor connected in parallel. The capacitor and inductor interact with each other resulting in a frequency dependent on their combination. The quartz crystal is connected between the inputs of the amplifier, and the amplifier amplifies the signal and sends it to the level shifter. The level shifter converts the signal into a single ended output which is then supplied to the differential amplifier. The differential amplifier provides high voltage isolation between the grounds of both ends of the circuit. This allows the circuit to maintain a constant operating frequency and avoids any interference or noise from external sources.The SIT8918AA-22-33E-24.576000E oscillator produces a very stable, accurate and consistent frequency output, which is why it is widely used in many industries. The frequency accuracy of the oscillator can be adjusted by adding or removing the quartz crystal. The output frequency is also adjustable by adding and removing capacitors and resistors in the tuning tank circuit.

Conclusion

In conclusion, the SIT8918AA-22-33E-24.576000E oscillator is a reliable and accurate frequency source that is often used in various applications. The oscillator operates on the principle of a quartz crystal oscillator circuit, and its frequency is adjusted by adding and removing the quartz crystal and tuning tank components. The oscillator produces a very stable frequency output and is widely used in clocks and timing circuits, aircraft guidance systems, medical device monitoring, and radio and telecommunications equipment.

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