SIT3809AI-C-33NX

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Programmable Oscillators

The SIT3809AI-C-33NX is a part of a family of programmable oscillators that uses a variety of different technologies to provide highly accurate, repeatable and reliable frequency synthesis. The programmable oscillator incorporates an analog/digital step-programmable frequency synthesizer with an amplitude and pulse width modulation controller, providing stable frequency and wideband output. The device also features dynamically controlled crystal transistors (DCTs).

Application Field

The SIT3809AI-C-33NX application field includes a wide range of industry and consumer applications. It is ideal for use in equipment such as TV, DVD, and Satellite Decoder Box, CD/VCD/DVD recorders, mobile phones and radiotelephones, VCRs, digital audio video recorders and receivers, digital cameras, digital video records, VCDs, general-purpose clocks and oscillators, PLCs and PC peripheral clock drivers and interface communication.

Working Principle

The SIT3809AI-C-33NX works by reserving a precise oscillator settings data in a non-volatile memory. The oscillator settings are sent to the processor controller which is used to calculate a programmable frequency. The generated frequency is then sent to the external transistors to generate the desired frequency. The oscillator can achieve high stability and exceptionally accurate timing with a crystal precision of less than +/- 1ppm.

The SIT3809AI-C-33NX also features an amplitude and pulse width modulation controller. This controller allows for independent control over the amplitude, offset, phase shift and rise/fall times of the signal. This feature can be used to enhance system-level interference filtering or for compensating for device\'s changing operating temperature. It also includes user-selectable low-pass filters for reducing unwanted high-frequency noise.

Conclusion

The SIT3809AI-C-33NX is a powerful, programmable oscillator designed to provide superior accuracy, high-frequency stability and flexibility in a wide range of consumer and industry applications. This device integrates a programmable frequency synthesizer, an amplitude and pulse width modulation controller, and dynamically controlled crystal transistors to ensure reliable and stable operation. This makes the SIT3809AI-C-33NX an ideal choice for any application requiring high accuracy and stability.

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