SIT9120AC-1B1-25E98.304000D

Frequency Stability:	±20ppm
Current - Supply (Disable) (Max):	35mA
Height - Seated (Max):	0.032" (0.80mm)
Size / Dimension:	0.126" L x 0.098" W (3.20mm x 2.50mm)
Package / Case:	6-SMD, No Lead
Mounting Type:	Surface Mount
Ratings:	--
Current - Supply (Max):	69mA
Operating Temperature:	-20°C ~ 70°C
Absolute Pull Range (APR):	--
Series:	SiT9120
Voltage - Supply:	2.5V
Output:	LVPECL
Function:	Enable/Disable
Frequency:	98.304MHz
Type:	XO (Standard)
Base Resonator:	MEMS
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Introduction to Oscillators

An oscillator is an electronic circuit that produces a recurring electronic signal at a specific frequency for use within an electronic system. Oscillators are used to maintain a steady signal throughout a broadband communications system or to generate a steady output frequency that typically falls within the audio spectrum, although oscillators can generate any frequency up to the upper frequency range of radio frequency. Oscillator usage is wide-spread within a vast array of electronics including radio transmitters to filter circuits and every other application that requires a steady frequency or repeating signal.

Types of Oscillators

Oscillators are categorized based on their method for driving or maintaining the oscillations. The most commonly used type of oscillator is the Sinusoidal Oscillator. With this form of oscillator, a sinusoidal output waveform is generated by the use of an unstable component or circuit that operates in a regenerative feedback loop. In order for the oscillator to function, the output must be fed back into the circuit at a discrete frequency to reinforce the oscillatory loop and maintain the repeated output signal.Other types of oscillators employ components such as digital circuitry, feedback loops, and the application of amplifiers to produce the desired output frequency. Resonator Oscillators are a combination of electrical and mechanical components (such as crystals) arranged in a complex configuration to produce a steady output frequency. Tuned Oscillators use a partly closed loop to produce a steady output signal. Specialized oscillators such as Clock or Timing Oscillators produce a repetitive and precise output frequency for various applications such as powering a computer processor.

SIT9120AC-1B1-25E98.304000D Application Field and Working Principle

The SIT9120AC-1B1-25E98.304000D is an electronic oscillator component specifically designed to meet the frequency needs of telecommunications systems. It is a 3.3V precision Clock Oscillator that produces a continuous output signal of 25MHz with a stability of 0.004%.The SIT9120AC-1B1-25E98.304000D oscillator is typically used for synchronizing and routing data in low voltage digital systems such as in digital television, cellular phones, and other similar applications. It provides a low-cost solution for frequency requirements where temperature stabilities are of lesser importance.The working principle of the SIT9120AC-1B1-25E98.304000D is relatively simple. The oscillator’s input voltage receives an alternating current signal which is then converted into an oscillatory waveform signal via a Transistor-Transistor Logic (TTL) phase-locked loop. The oscillations produced by the phase-locked loop are then amplified using an amplifier stage to yield the precise output frequency required.

Conclusion

In conclusion, the SIT9120AC-1B1-25E98.304000D is a type of electronic oscillator component designed for use in low voltage digital telecommunications systems. Utilizing a TTL phase-locked loop in conjunction with an amplifier, the oscillator yields a precise output frequency of 25MHz. This output frequency is then used for signal synchronization and data routing in various digital systems such as cellular phones and digital television.

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