SIT3809AC-2-18NH

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Programmable Oscillators are a type of oscillator which can be programmed to a specific frequency, allowing a wider range of use than standard oscillators. The SIT3809AC-2-18NH is an example of such a component, being a voltage controlled crystal oscillator, with a range of operating frequencies spanning from 40KHz to 40MHz. This component has several applications in the fields of digital clocks, telecommunication systems, radar and electronic warfare systems, hi-fi audio and video interfaces, digital video and audio encoders and decoders, industrial digital networks, and embedded communication systems.

The SIT3809AC-2-18NH is composed of a voltage-controlled oscillator (VCXO), a temperature-controlled oscillator (TCXO), and a phase-locked-loop (PLL) circuit. The VCXO is responsible for generating the main clock signal, with output frequencies ranging from 40KHz to 40MHz, with an accuracy of +/-20ppm (parts per million) and a jitter of no more than 0.5ps (Pico-Seconds). The TCXO is used to modify the output frequency of the VCXO in order to achieve higher accuracy, while the PLL circuit is used to synchronize the output frequency with an external reference clock. This PLL circuit is also responsible for frequency division and multiplication, as well as noise filtering, both of which can be adjusted by the user.

In addition to its basic functioning, the SIT3809AC-2-18NH also offers a number of other features. These include a synchronization signal output, a programmable crystal oscillator (PCO) output, a selectable oscillator output drive strength, and a digital loop filter. The synchronization output signal provides a signal which can be used to note the change of the output frequency, while the PCO output allows for a connection to an external programmable crystal oscillator. The oscillator output drive strength is adjustable, which allows for the use of lower power supplies for some applications, and the digital loop filter allows for the adjustment of the amount of noise which is filtered out of the output signal. All of these features combined make the SIT3809AC-2-18NH an ideal solution for a wide range of applications.

Overall, the SIT3809AC-2-18NH offers an excellent level of performance and reliability, making it an excellent choice for any application which requires an oscillator. With its wide range of features and adjustable frequencies, this programmable oscillator can easily be adapted to almost any application, and its PCO output allows for an even greater level of customization. With its excellent performance, high reliability and reasonable price, the SIT3809AC-2-18NH should be an easy choice for anyone looking for an oscillator capable of meeting their needs.

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