Frequency Stability:	±280ppb
Current - Supply (Disable) (Max):	--
Height - Seated (Max):	0.083" (2.10mm)
Size / Dimension:	0.276" L x 0.197" W (7.00mm x 5.00mm)
Package / Case:	10-SMD, No Lead
Mounting Type:	Surface Mount
Ratings:	--
Current - Supply (Max):	6mA
Operating Temperature:	-40°C ~ 85°C
Series:	579
Voltage - Supply:	3.3V
Output:	HCMOS
Function:	Enable/Disable
Frequency:	25MHz
Type:	TCXO
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Introduction

Oscillators are devices that produce periodic, repetitive signals that are used for a variety of applications. One type of oscillator commonly used in the electronics industry is the 579L250ITT, also known as the Inductor-Transistor-Transistor (ITT) oscillator. This oscillator uses the combination of an inductor, two transistors and two capacitors to produce a signal at a predetermined frequency. This article will explain the application field and working principle of the 579L250ITT oscillator.

Applications for the 579L250ITT Oscillator

The 579L250ITT oscillator is widely used in various applications such as communication systems, automotive electronics, audio systems and consumer electronics. The primary advantages of this oscillator are its low cost, low power consumption and reliable performance. In telecommunications applications, the oscillator is used to generate precise frequencies for use in modulating and demodulating signals. It is also used in radio broadcasting, where it provides a stable and consistent signal output for the transmission of radio waves.In automotive electronics, the 579L250ITT oscillator is used for motor control and in other engine management systems. The oscillator can also be used for diagnostics, stability control, and security systems.In audio systems, the oscillator is used to control the frequency of the signal, ensuring that the output is accurate and free from distortion. It is also used in consumer electronics such as radios, televisions, and video games.

Working Principle of the 579L250ITT Oscillator

The 579L250ITT oscillator is a three-stage circuit composed of an inductor, two transistors (an NPN and a PNP) and two capacitors (one series and one parallel). The inductor and transistors form the active components of the oscillator, while the capacitors act as the feedback elements. The operation of the oscillator begins when a DC voltage is applied to the base of the NPN transistor. This causes the transistor to turn on, allowing current to flow through the circuit. The current then flows through the inductor, storing energy in it in the form of a magnetic field. As the magnetic field builds, the NPN transistor turns off, forcing the current to flow through the PNP transistor. This, in turn, causes the current to flow in the opposite direction, back through the inductor and allowing the magnetic field to collapse, releasing the stored energy.The energy released from the inductor charges the two capacitors simultaneously. That stored energy then returns on the same circuit, causing the NPN transistor to turn on and the cycle to begin again. This tutorial explains the circuit as a positive feedback loop.

Conclusion

The 579L250ITT oscillator is a reliable and cost-effective solution for a variety of applications ranging from communication systems to audio systems. By combining an inductor, two transistors and two capacitors with a positive feedback loop, the oscillator is able to generate a signal at a predetermined frequency with excellent accuracy and stability. This article has explained the application field and working principle of the 579L250ITT oscillator.

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