SIT8209AC-82-28E-212.500000T

Frequency Stability:	±25ppm
Current - Supply (Disable) (Max):	31mA
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):	36mA
Operating Temperature:	-20°C ~ 70°C
Absolute Pull Range (APR):	--
Series:	SiT8209
Voltage - Supply:	2.8V
Output:	LVCMOS, LVTTL
Function:	Enable/Disable
Frequency:	212.5MHz
Type:	XO (Standard)
Base Resonator:	MEMS
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Oscillators

Oscillators are electrical or electronic components that generate a constant periodic waveform at a particular frequency. This waveform can be used in various applications such as timekeeping, data transmission, and audio generation. Oscillators can be designed to generate a wide range of periodic waveforms such as sine waves, square waves, triangular waves, and even more complex patterns. SIT8209AC-82-28E-212.500000T is a highly accurate temperature compensated crystal oscillator (TCXO). It features low power consumption, high frequency stability and low phase noise performance.

Application Field

SIT8209AC-82-28E-212.500000T, due to its high accuracy, is predominantly used in communication-related applications such as cellular base stations, handsets, WiMax modems and GNSS multiplexers. It is also suitable for other embedded system applications such as clock references in healthcare and automotive systems and clock sources in many other industrial automation systems.

Working Principle

The oscillator essentially consists of a quartz crystal, a frequency pre-scaler, an amplifier stage and a temperature compensation circuit. The quartz crystal is the active element in the oscillator, and when it is energized it oscillates at its specific frequency. The frequency pre-scaler then takes this signal, divides the frequency down to a suitable level for the amplifier stage. The amplifier then amplifies the signal to an appropriate level and sends it to the output port of the oscillator. The temperature compensation circuit helps maintain the frequency of the oscillator over a wide range of temperatures. This is achieved by using a temperature sensor that detects temperature variations from the nominal value and adjusts the frequency of the oscillator accordingly.In conclusion, SIT8209AC-82-28E-212.500000T is an accurate temperature compensated crystal oscillator used in communication applications such as base stations, handsets, WiMax modems and GNSS multiplexers. It has a low power consumption, a high frequency stability and a low phase noise performance. The oscillator is essentially comprised of a quartz crystal, a frequency pre-scaler, an amplifier stage and a temperature compensation circuit to help maintain the frequency over a wide range of temperatures.

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