SIT1602BC-21-25N-66.666000E

Frequency Stability:	±20ppm
Current - Supply (Disable) (Max):	--
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):	4.2mA
Operating Temperature:	-20°C ~ 70°C
Absolute Pull Range (APR):	--
Series:	SiT1602B
Voltage - Supply:	2.5V
Output:	HCMOS, LVCMOS
Function:	--
Frequency:	66.666MHz
Type:	XO (Standard)
Base Resonator:	MEMS
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Oscillators: SIT1602BC-21-25N-66.666000E

Oscillators are electronic components that produce periodic, oscillating signals. They are used in many different applications in the electronics field, often providing a reliable and exact output frequency to ensure proper operation of a circuit. Oscillators can be used in a variety of ways, such as providing an accurate reference frequency, providing stable timing elements in digital logic gates, and providing feedback in analog circuitry. One type of oscillator is the SIT1602BC-21-25N-66.666000E, a Voltage Controlled Oscillator (VCO) that is used for tuning and operations at high clock rates. It has a wide tuning range and is suitable for low-noise applications.

Typical Applications

This oscillator can be used in digital cellular base stations, wireless modems, amplifiers, digital video broadcast applications, Wi-Fi, and other wireless systems. It is also commonly used in high-speed data transfer applications, such as USB 2.0 and Ethernet, as well as in modems for voice over IP and computer networking.

Working Principle and Features

The SIT1602BC-21-25N-66.666000E operates on a wide range of supply voltages, from 3.3 V to 5 V. It is designed to be a very low-noise and low-current design, with an ultra-low phase noise of -160 dBc/Hz at 1MHz center frequency. This VCO offers excellent signal quality, with a high level of power output and low harmonic distortion. Its operating principle is based on a voltage-controlled negative resistance, which is created by a gyrator formed by a voltage-sensitive capacitor and a transistor. The frequency of the oscillation is proportional to the applied voltage, and the amplitude of the output signal is determined by the current through the gyrator.The SIT1602BC-21-25N-66.666000E also features an integrated output amplifier, which provides a high output level and a high level of isolation between the output and input. It has a wide tuning range of 28 MHz to 135 MHz and an extremely low zero-bias phase noise of -160 dBc/Hz at 1MHz center frequency. The VCO can be externally loop filtered for frequency accuracy and stability. In addition, the device has an integrated ESR compensation circuit that improves the pullability of its tuning range, making it suitable for use in applications where precise frequency control is required.

Conclusion

The SIT1602BC-21-25N-66.666000E is a voltage-controlled oscillator that is designed for high-speed, high-frequency applications. It offers low-noise operation and is capable of providing a precise output frequency, making it a reliable and accurate choice for a variety of applications. The device has a wide tuning range and a low zero-bias phase noise, making it an excellent choice for low-noise and high-accuracy applications.

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