SIT9005ACT1D-18SK

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Programmable oscillators are different from their fixed frequency counterparts in that they are able to provide a range of output frequencies. This allows for flexibility when making circuits and gives the option of changing frequency depending on the application. This article will discuss the specific programmable oscillator SIT9005ACT1D-18SK and its application field and working principle.

The first use of programmable oscillators is in radio broadcasting receivers. By having a range of selectable frequencies, the user is able to easily tune into their desired station. This eliminates the need for manual adjustment which allows for rapid search and frequency tuning processes. Furthermore, the use of programmable oscillators allows for the inclusion of other radio reception functions such as being able to receive signals in different frequency bands like FM and AM.

Programmable oscillators are also used in the audio industry. Because they can produce a range of output frequencies, they are able to accurately replicate different musical notes. This enables the use of synthesizers and other digital instruments to produce sounds that are more faithful to their acoustic counterparts. Furthermore, because the oscillators can be easily adjusted and controlled, they can be used to create various effects such as reverberation, chorus, and tremolo.

The SIT9005ACT1D-18SK is a programmable oscillator that is specially designed for use in communications and timing applications. It features wide frequency range of 1.5 to 18 MHz with a high resolution of up to 0.25%. The oscillator also has low phase noise, harmonics and low spurs which makes it perfect for radio and other high frequency applications. It is also designed with pick-and-place manufacturing in mind, so it can be easily assembled onto a printed circuit board.

The SIT9005ACT1D-18SK works on the principle of Frequency Synthesis. This involves using a reference frequency, usually fixed, and a phase locked loop (PLL) to generate a range of frequencies. The oscillator contains a phase detector which compares the phase of the reference frequency with the output frequency. The output frequency is adjusted to match the reference and the result is a range of programmable frequencies.

The programming of the oscillator is typically done through 3-4 programmable pins, which can be either analog or digital. With analog, the tunable frequency is programmed by connecting different combinations of resistance and capacitance. With digital, a microcontroller is used to set a word length which represents the frequency. Both these methods allow the user to adjust the oscillator without the need for hardware modification.

The SIT9005ACT1D-18SK is a great choice for many communications and timing applications. Its wide frequency range and high resolution make it perfect for radio and high-frequency applications, while its low phase noise and harmonics make it suitable for audio applications as well. Furthermore, its programming pins and pick-and-place design make it easy to work with.

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