SIT8208AC-GF-25S-74.176000X

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Oscillators

Oscillators are self-sustaining electronic circuits that produce a periodic signal without the need for an external energy source. Oscillators are used in many applications, such as synchronizing the operation of digital integrated circuits (ICs), controlling switching power supplies, and providing signals to radio transmitters and receivers. They are also used to create resonant frequencies for filtering, signal generation, and noise suppression.

SIT8208AC-GF-25S-74.176000X is a type of oscillator which is a low-power, monolithic temperature-compensated oscillator (TCXO). It is one of the most widely used oscillators in the communications and networking industries. The TCXO has a frequency range from 7.2 MHz to 10 MHz and is designed to operate over a wide temperature range, from -40°C to +85°C. Its nominal center frequency is 74.176 MHz.

The SIT8208AC-GF-25S-74.176000X oscillator consists of a quartz crystal resonator, a frequency determining circuit, and a temperature stabilizing circuit. The oscillator utilizes a piezoelectric crystal as its frequency-determining element. When the crystal is excited by a DC voltage, it oscillates at its resonant frequency, which is determined by its size and thickness.

The temperature stabilizing circuit is designed to compensate for the temperature-dependent oscillation frequency of the quartz crystal. This ensures that the output frequency of the oscillator remains consistent over a given temperature range. The circuit uses a temperature sensor to detect changes in temperature and adjusts the DC voltage applied to the quartz crystal accordingly. This maintains the output frequency as close as possible to the nominal value specified on the part.

The wide temperature range, low power consumption, and accurate frequency stability make the SIT8208AC-GF-25S-74.176000X an ideal solution for applications requiring precise timing control over a wide range of temperatures. These applications include telecommunications systems, GPS systems, and base station controllers. It is also used in portable communication equipment, such as mobile phones, and can be used for general board-level timing control requirements.

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