SIT9120AC-2C1-25E74.175824X

Series:	SiT9120
Packaging:	Tape & Reel (TR)
Part Status:	Active
Base Resonator:	MEMS
Type:	XO (Standard)
Frequency:	74.175824MHz
Function:	Enable/Disable
Output:	LVDS
Voltage - Supply:	2.5V
Frequency Stability:	±20ppm
Absolute Pull Range (APR):	--
Operating Temperature:	-20°C ~ 70°C
Current - Supply (Max):	55mA
Ratings:	--
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)
Current - Supply (Disable) (Max):	35mA

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Introduction

Oscillators are essential for the operation of all electronic circuits and, in particular, those related to the operation and maintenance of telecommunications systems. This article will discuss the application field and working principle of SIT9120AC-2C1-25E74.175824X, one type of oscillator.

Application Field

SIT9120AC-2C1-25E74.175824X is particularly suitable for applications that require long term stability. Most preference is given to applications in high performance system, where high-speed and low-noise performance are essential. Generally, this type of oscillator can be used as a reference clock for mobile communication equipment or as a local oscillator for frequency synthesizers in broadcast equipment.

Working Principle

The SIT9120AC-2C1-25E74.175824X is a quartz crystal oscillator, which is based on a quartz crystal resonator and its transducer circuit. The transducer circuit is responsible for converting the electrical energy of the quartz resonator into an RF signal. The quartz crystal resonator consists of two pieces of cut quartz crystal with metal lugs at their ends. These metal lugs are used to couple the energy of the quartz crystal to the transducer\'s two electrodes. When an AC voltage is applied to the electrodes, a mechanical deformation of the quartz crystal allows it to vibrate at a frequency that is determined by its dimensions. This vibration induces a frequency difference between the electrodes, which in turn creates the RF signal. The transducer circuit amplifies the signal and produces a high-frequency output with excellent stability. The stability of the SIT9120AC-2C1-25E74.175824X is also excellent due to its ability to reduce the drift in the frequency output. This is achieved by compensating for any changes in temperature, pressure or vibration. The oscillator also performs well in wide frequency ranges, making it suitable for use in a number of different telecoms systems.

Conclusion

In conclusion, the SIT9120AC-2C1-25E74.175824X is a helpful oscillator which is designed for long-term stability. It is suitable for applications which require high-speed and low-noise performance as well as applications for mobile communication equipment or frequency synthesizers in broadcast equipment. The oscillator\'s transducer circuit converts electrical energy from a quartz crystal resonator into an RF signal, which is amplified and provides a high-frequency output with excellent stability. Additionally, it offers good temperature, pressure and vibration compensated output which makes it useful for varied telecoms systems.

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