SIT8208AC-81-25S-12.288000T

Frequency Stability:	±20ppm
Current - Supply (Disable) (Max):	70µA
Height - Seated (Max):	0.039" (1.00mm)
Size / Dimension:	0.276" L x 0.197" W (7.00mm x 5.00mm)
Package / Case:	4-SMD, No Lead
Mounting Type:	Surface Mount
Ratings:	--
Current - Supply (Max):	33mA
Operating Temperature:	-20°C ~ 70°C
Absolute Pull Range (APR):	--
Series:	SiT8208
Voltage - Supply:	2.5V
Output:	LVCMOS, LVTTL
Function:	Standby (Power Down)
Frequency:	12.288MHz
Type:	XO (Standard)
Base Resonator:	MEMS
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Introduction

Oscillators are electronic circuits which generate periodic oscillating signals. They are widely used for a wide variety of applications, ranging from communication systems to synchronization and timing. SIT8208AC-81-25S-12.288000T oscillator is one of such products which possesses superior performance and provides reliable operation.

Application Field

The SIT8208AC-81-25S-12.288000T oscillator is specially designed for use in Global Positioning System (GPS) applications. It is built with a special temperature compensated quartz crystal and runs with a frequency of 12.288000 kHz. It has a frequency stability of ±3 ppm at an operating temperature range of -40℃ to +85℃. This device also features a low current consumption and offers a high degree of protection against temperature shock. Apart from GPS applications, the SIT8208AC-81-25S-12.288000T oscillator can also be used in PCM telecommunication interfaces, frequency synthesis, clock and data transmission, frequency conversion, and other similar applications.

Working Principle

The fundamental principle underlying the operation of an oscillator is feedback amplification. An oscillator is constructed from two main components: an amplifier and a frequency-determining element. The amplifier amplifies the output signals from the frequency-determining element while the frequency-determining element determines the frequency of the output. In the SIT8208AC-81-25S-12.288000T oscillator, the frequency-determining element is the temperature compensated quartz crystal, while the amplifier is a specialized circuit with numerous transistor stages for providing enough gain to the circuit.When a signal is applied to the quartz crystal, it vibrates at its resonant frequency. The output signal from the quartz crystal is amplified by the amplifier, which eventually creates an oscillation at the desired frequency. This oscillation occurs at a steady state, with no change in its frequency or amplitude. The job of the temperature-compensated quartz crystal is to ensure that the frequency of the oscillation remains at 12.288000 kHz with minimal variations even when the temperature changes. Thus, the oscillator produces a stable signal and can be used for a variety of applications.

Conclusion

The SIT8208AC-81-25S-12.288000T is a miniature, temperature-compensated quartz oscillator which is especially designed for GPS applications. It is designed to generate an accurate frequency of 12.288000 kHz which is used in GPS systems and other applications. Its temperature-compensated quartz crystal ensures the frequency of the oscillation remains stable even when the temperature changes. The SIT8208AC-81-25S-12.288000T oscillator is a reliable and cost-effective solution which can be used in a wide variety of applications.

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