SIT9005ACU2H-28DE

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Programmable Oscillators

Programmable oscillators are used for setting frequencies in a predetermined range. They are particularly useful for applications such as radio communications and computer systems, where the desired frequency needs to be set precisely. Programmable oscillators use feedback and resonant circuits to produce frequencies in their respective bandwidths. An example of a programmable oscillator is the SIT9005ACU2H-28DE.

Application Field of SIT9005ACU2H-28DE

The SiT9005ACU2H-28DE is a high frequency, low power, programmable oscillator that operates at 28MHz. It is specifically designed for applications in system clocks, medical devices, and high frequency low power radios, among others. The oscillator is available in a small 6-pin footprint with a variety of options including shutdown, speed grade, package type and frequency adjustment range. It is based on the SiT9005AC family of oscillators which are designed for low power and high accuracy operation.

Working Principle of SIT9005ACU2H-28DE

The heart of the SIT9005ACU2H-28DE is an oscillator based on the SiT9005AC family. This oscillator is a third-order, dual closed loop design. The output frequency of the oscillator is determined by the capacitance in the tank ciruit and the resistor values in the feedback and control circuits. The oscillator has a self-compensated crystal that can be programmed for a temperature range of -40oC to 85oC. The oscillator also has integrated over-power protection that limits peak to peak voltage swings.

The oscillator also contains an integrated digital control circuit that allows the output frequency to be adjusted by the user. This control circuit is programmed through an I2C bus and allows the user to select up to four frequencies between 0 and 28MHz. The user can also enable or disable the oscillator’s shutdown feature through the I2C bus, which reduces power consumption when the oscillator is not in use.

The oscillator provides a low jitter signal that is ideally suited for digital radio applications. The Low Phase Noise design also minimizes interference in signal processing applications, making it ideal for systems that require high signal to noise ratios.

Conclusion

The SiT9005ACU2H-28DE is a high frequency, low power, programmable oscillator that is designed for applications in system clocks, medical devices, and high frequency low power radios. It is based on the SiT9005AC family of oscillators and has an integrated digital control circuit that allows the user to select up to four frequencies between 0 and 28MHz. The oscillator also has integrated over-power protection and a low jitter signal that is suitable for digital radio applications. The SiT9005ACU2H-28DE is an ideal choice for applications that require high performance and reliable frequency generation in a small package.

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