SIT8208AC-21-25E-66.660000Y

Frequency Stability:	±20ppm
Current - Supply (Disable) (Max):	31mA
Height - Seated (Max):	0.032" (0.80mm)
Size / Dimension:	0.126" L x 0.098" W (3.20mm x 2.50mm)
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:	Enable/Disable
Frequency:	66.66MHz
Type:	XO (Standard)
Base Resonator:	MEMS
Part Status:	Active
Packaging:	Tape & Reel (TR)

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What are Oscillators?

Oscillators are electrical circuits that generate a periodic electric signal of a specified frequency without any external input. They are commonly used in a variety of electronic applications from telecoms to computers, as well as for generating the clock signals required for digital logic to operate.

SIT8208AC-21-25E-66.660000Y Application Field and Working Principle

The SIT8208AC-21-25E-66.660000Y is a voltage controlled oscillator (VCO) with a center frequency of 66.66MHz, a frequency range of 21 to 25MHz, and a frequency stability of +/- 100ppm. It is suitable for a range of applications including frequency generation, frequency synthesis, and microwave communication systems.The SIT8208AC-21-25E-66.660000Y is based on a quartz crystal oscillator circuit, which is a type of electronic oscillator circuit using quartz crystal as the frequency-determining element. The quartz crystal provides a precise and stable frequency, which is controlled by the voltage amplitude of the input signal applied to the crystal. As the applied voltage varies, the frequency of the output signal can be varied as well.The internal circuit of the SIT8208AC-21-25E-66.660000Y is divided into two main parts: the frequency-control section and the frequency-stability section. The frequency-control section consists of a quartz crystal and a current-controlled oscillator (CCO) which converts the input signal into the required frequency. The frequency-stability section consists of a temperature-compensation network and low-pass filters which ensure the required tolerance and temperature compensation respectively. The SIT8208AC-21-25E-66.660000Y is designed to have a low power consumption, a wide voltage range (3V to 5.5V), and a low total harmonic distortion (THD). The device also features a high phase noise and a wide frequency range, making it suitable for a range of applications.

Conclusion

The SIT8208AC-21-25E-66.660000Y is a voltage controlled oscillator (VCO) designed for a variety of applications such as frequency generation, frequency synthesis, and microwave communication systems. The device is based on a quartz crystal oscillator circuit and features a wide frequency range, low power consumption, a wide voltage range, and a low total harmonic distortion. Its frequency stability over temperature is ensured by a temperature compensation network and low-pass filters. The SIT8208AC-21-25E-66.660000Y is an ideal choice for applications requiring a precise and stable frequency.

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