SIT8208AC-82-25S-7.372800X

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Oscillators are electrical circuit components that produce regular signals of a specified type and frequency. The SIT8208AC-82-25S-7.372800X is an example of an oscillator, specifically designed for use in DS1 line cards and E1 systems. This oscillator is valuable for these applications because of its high-reliability operation and low-jitter performance.

This oscillator utilizes a Pierce Crystal Oscillator topology and operates at the DS1/E1 clock rate of 7.3728 MHz. It features an internal divider that allows for the output frequency to be 1/8th, 1/16th, or 1/32nd of the nominal frequency. This means it is capable of providing output frequencies of 7.3728MHz, 3.6864MHz, 1.8432MHz, and 0.9216MHz, making this oscillator compatible with a range of applications.

The SIT8208AC-82-25S-7.372800X is designed with a total harmonic distortion (THD) of less than -65dB and has an extremely low phase noise, with a calculated maximum value of -72dBc/Hz at 100kHz offset. It is available in two packages: 8-lead SOIC and 5-pad SOT23. Other features include a total jitter of 0.02UI, low power consumption, and superior reliability.

SIT8208AC-82-25S-7.372800X oscillators are used in applications such as telecommunications, digital video broadcasting (DVB), test equipment, set-top boxes, local area networks (LANs), and medical equipment. These oscillators provide a stable, high-accuracy output signal and are instrumental in systems that require precise timing.

The working principle of the SIT8208AC-82-25S-7.372800X oscillator is based on the traditional Pierce Crystal Oscillator circuit. In this circuit, a negative resistance device is connected to a crystal, which creates a feedback path. This feedback path causes the crystal to oscillate at a certain frequency, and the oscillating waves are then fed back into the external circuitry. This feedback is used to drive the signal and keep it stable and accurate.

In the SIT8208AC-82-25S-7.372800X oscillator, a CMOS integrated circuit is used to drive the Pierce crystal oscillator circuit. The circuit includes a Voltage-Controlled Oscillator (VCO) that is used to adjust the frequency of the oscillator. Additionally, the oscillator also employs an internal digital divide-by-N counter, which is used to generate the output frequency of 1/8th, 1/16th, and 1/32nd of the nominal frequency.

In conclusion, the SIT8208AC-82-25S-7.372800X oscillator is a reliable and highly accurate oscillator designed for a range of applications such as telecommunications, digital broadcasting, and medical equipment. Its Pierce Crystal Oscillator topology offers superior accuracy and low phase noise, allowing for precise timing and control of DS1 and E1 systems. The SIT8208AC-82-25S-7.372800X oscillator is an invaluable tool for applications requiring precise and reliable performance.

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