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Application Field and Working Principle of SIT8008ACL8-18S

SIT8008ACL8-18S is a type of programmable oscillator (PO) designed to provide precise frequency control for communication applications. This device is most commonly used in applications that require precise clock scheduling, such as HDTVs, Blu-ray players, and cellular base stations. In addition to its stability and reliability, this PO also features a low noise floor and a wide operating temperature range (from -30°C to +85°C).

The working principle of the SIT8008ACL8-18S PO is based on a fundamental oscillator circuit. This circuit consists of a crystal oscillator, a frequency-dividing chain and a phase-locked loop. The crystal is tuned to a specific frequency, which is then divided down by the frequency-dividing chain. This output is then fed into the phase-locked loop, where it is compared with the output of a digitally controlled frequency divider. This comparison, in turn, allows the PLL to adjust the crystal frequency until it is exactly the same as the output of the digitally controlled frequency divider.

The frequency of the SIT8008ACL8-18S PO is software-programmable and can be adjusted from 1MHz to 150MHz. This flexibility makes it ideal for a wide variety of applications including Wi-Fi systems, DAB, satellite television and digital television. Moreover, this device is capable of achieving a low jitter performance, reducing interference between data and clocks.

The SIT8008ACL8-18S PO has several built-in features, including a power-saving mode, adjustable output impedance, and an integrated EMI filter. The power-saving mode reduces device current consumption, while the adjustable output impedance allows engineers to customize the device’s performance to suit specific application requirements. Finally, the EMI filter is a key component which prevents unwanted interference and cross-talk caused by external electromagnetic radiation.

In conclusion, the SIT8008ACL8-18S PO is an extremely versatile device which is suitable for a wide range of communication and control applications. With its precise frequency control, low noise floor and wide operating temperature range, this programmable oscillator provides reliable and precise performance even in the most demanding environments.

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