SIT8209AI-21-33S-100.000000X Crystals, Oscillators, Resonators

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Oscillators are electronic components used to generate a continuous periodic oscillating signal from a DC current or voltage source. The SIT8209AI-21-33S-100.000000X is a CMOS Voltage-Controlled Oscillator (VCXO) that belongs to a family of voltage controlled oscillators. It provides excellent phase noise performance and low-jitter clock frequencies, and is suitable for timing applications such as Ethernet and SONET.

The CMOS version of the SIT8209AI-21-33S-100.000000X uses an on-chip PLL (phase locked loop) to maintain a stable frequency output. Other characteristics include a built-in voltage regulator that can be set to 3.3V or 3.5V, a phase detector, an amplifier, and a frequency multiplication circuit. This combination allows the VCXO to meet the needs of systems requiring a tightly controlled frequency output. The VCXO also has an enable/disable state that allows the user to turn the oscillator on and off externally.

The SIT8209AI-21-33S-100.000000X is specifically designed for frequency conditioning, timing and synchronization applications. Its main application is in Ethernet and other network synchronization systems, where it can provide excellent phase jitter performance. It is also used in Wi-Fi networks, for time-stamping and synchronizing voice and video data, controlling frequency-synthesized components, and for master-clock generation. It is also used in telecom equipment for clock distribution, and in military radios. Its low-jitter output can even be used in telecom base-station systems for Improved Mobility, and in GPS and navigation systems.

The working principle of the SIT8209AI-21-33S-100.000000X is that it receives an external clock input, and sends the output signal to the output stage. The output stage is designed to generate a steady square-shaped waveform with a power-on reset state. The oscillator has two local oscillator outputs that can be programmed either as a linear frequency sweep or to produce a frequency shift when a voltage is applied to a pin. The input voltage is compared to a reference voltage provided by the frequency setting resistor, and the frequency of the output signal is automatically adjusted accordingly.

The SIT8209AI-21-33S-100.000000X is a voltage controlled oscillator specifically designed for timing and synchronization applications. It is the perfect choice for applications requiring a reliable, low-jitter oscillator that can maintain a stable frequency output for a wide variety of network-synchronization and telecom applications.

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