SIT8008BCL3-18S

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Programmable Oscillators are specialized integrated circuits that provide a stable frequency output. They are usually used in clock, communication, or timing applications where precision frequency is often required. Among the many types of oscillators, one such special oscillator is the SIT8008BCL3-18S. This article discusses the application field and working principle of the SIT8008BCL3-18S.

The SIT8008BCL3-18S is an octal-frequency programmable oscillator, which supports an input range of 0.75 MHz to 18 MHz. It is cable of providing 8 independently programmable outputs over the frequency range. The whole frequency range is divided into 8 equal frequency, step size is 0.75 MHz. In each output frequency, output power level can be set to +3 dBm, by level shifter, output power level can be set up to -2 dBm. It is packaged in an 18-pin frequency-selectable PLCC (SOIC), which allows for a minimum width of 1.52mm.

The SIT8008BCL3-18S has numerous application fields. It is especially suitable for control functions in consumer electronics, integrated electronic systems, telecommunications, industrial automation and instrumentation, clock-synchronization systems, and point-to-point networking. It can also be used for clocking in high-speed logic systems and analog-to-digital converters (ADCs). Since it is a programmable oscillator, it can also be used in various customization applications where it is necessary to use a wide range of output frequencies.

The working principle of the SIT8008BCL3-18S is based on the concept of a phase-locked loop (PLL). It operates by sensing a reference frequency and then synchronizing the frequency of its output with that of the reference. The oscillator includes a programmable frequency synthesizer, a voltage-controlled oscillator (VCO), a phase detector (PD) and a low-pass filter (LPF). The operation begins when the reference frequency is applied to the PD. The PD then compares the reference frequency with the VCO output and sends the information to the LPF. Depending on the difference between both frequencies, the LPF gives a voltage control signal to the VCO, which then adjusts its frequency to match the reference frequency.

In conclusion, the SIT8008BCL3-18S is a versatile and programmable oscillator with a wide application range from consumer electronics to network synchronization. It operates on the principle of a PLL, which allows it to accurately synchronize its frequency output with that of a reference frequency. This oscillator is suitable for a variety of customization applications where wider range of output frequency is needed.

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