SIT9120AC-1CF-25E133.333000X

Series:	*
Packaging:	Tape & Reel (TR)
Part Status:	Active
Mounting Type:	Surface Mount
Package / Case:	6-SMD, No Lead
Size / Dimension:	0.197" L x 0.126" W (5.00mm x 3.20mm)
Height - Seated (Max):	0.032" (0.80mm)

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Introduction of OscillatorsOscillators are circuits that produce periodic output signals of consistent amplitudes and frequencies. They can be used in various applications including signal networks and communications, logic circuits, sampling and timing applications, and more. An oscillator can be made using a wide range of components such as crystals, resistors, capacitors, and amplifiers.SIT9120AC-1CF-25E133.333000XSIT9120AC-1CF-25E133.333000X is one of the oscillators. It is capable of providing high-performance frequency and power stability for applications such as avionics, wireless infrastructure, transceivers, and more. It is a small form factor (25mm x 25mm) crystal oscillator with a low-jitter frequency of 133.333000 MHz. The operating temperature range is -40℃～85℃, and the typical supply currents are 8.2mA and 7.2mA@3.3V and 5V, respectively. Additionally, the oscillator features PUIS (Power-Up Inhibit System) and PLL (Phase Lock Loop).Application FieldSIT9120AC-1CF-25E133.333000X is widely used in various applications, including wireless infrastructure, telecom infrastructure, avionics, military and medical equipment, base stations, radio transceivers, and more. It offers superior frequency stability over wide temperature, voltage and magnetic variations—which makes it an ideal choice for high-performance applications.Working PrincipleThe working principle of the SIT9120AC-1CF-25E133.333000X is based on four essential components: an oscillating element that provides the periodic output signal, an amplifier circuit that amplifies the signal, an energy-recycling element that stores energy from the oscillator to restart the cycle, and a feedback loop that ensures the frequency stability of the output signal. The oscillating element of this oscillator is a crystal oscillator, which is made of two quartz crystals that vibrate when a certain voltage is applied. The two crystals are mechanically coupled so that they oscillate in opposite phase, thus cancelling out unwanted signals and creating a stable output signal.The amplifier circuit boosts the oscillator’s output signal to the desired output signal. The amplifier also controls the output voltage level and the output current level to help maintain the desired output frequency.The energy-recycling element stores energy from the oscillator and recycles it into the cycle when the voltage to the oscillator is removed. This helps to maintain the output frequency when the voltage is interrupted. Lastly, the feedback loop ensures that the output frequency is stable. It feeds back part of the amplified signal to the oscillator input to maintain the oscillator’s frequency accuracy.ConclusionIn conclusion, SIT9120AC-1CF-25E133.333000X is one of the oscillators used in various applications such as wireless infrastructure, telecom infrastructure, avionics, military and medical equipment, base stations, radio transceivers, and more. It is capable of providing high-performance frequency and power stability. The working principle of this oscillator is based on four essential components, namely the oscillating element, the amplifier circuit, the energy-recycling element, and the feedback loop.

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