SIT9002AC-18H25DT

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Programmable oscillators are electronic devices that generate oscillatory signals with a frequency which can be selected and set by a user. This oscillatory signal is used for a number of applications, including clock frequency control, communications, and motion control. The SIT9002AC-18H25DT is a programmable oscillator from the SiTime family. It is based on a 25.080 MHz quartz crystal, but with a wide tuning range of 0.60MHz to 999.999MHz. It has high stability and excellent dynamic performance in terms of power supply rejection and frequency acceleration. This makes it suitable for a wide range of applications, including Automotive, Industrial, Robotics and Telecoms.

Features

The SIT9002AC-18H25DT is an improved variant on the original SIT9002AC-18H25DT. It has an improved thermal pad design, an improved output drive and the ability to support noise masking. It also has a higher frequency stability range of 0 ppm, making it suitable for applications that require very accurate frequency stability, such as Robots and Telecommunications.

Applications

The SIT9002AC-18H25DT is well suited for a range of applications that require high frequency stability and precision timing. These include Automotive, Industrial, Robotics and Telecommunications. In Automotive applications, the SIT9002AC-18H25DT can be used to control the timing of fuel injection, as well as providing an accurate reference frequency in data acquisition systems or in climate control systems. In Industrial applications, the SIT9002AC-18H25DT can be used to provide timing in precision motor control systems and position sensors, as well as providing a means for precision frequency control. In Robotics, the SIT9002AC-18H25DT can be used for accurate control of movement and for precise timing of events. Finally, in Telecommunications, the oscillator can be used for controlling the frequency of communications signals, as well as timing signal transmission in data communications systems.

Working Principle

The working principle of the SIT9002AC-18H25DT is based on an oscillator circuit. This oscillator circuit combines an active device (such as a transistor, FET or op-amp) with an inductor and capacitor to form a tuned LC circuit. The active device provides the necessary output power and gain to generate an oscillating output signal with a frequency determined by the values of the inductor and capacitor. To create a precision oscillator, the active device must be temperature-compensated and the inductor and capacitor must be carefully matched to ensure a very stable frequency. The SIT9002AC-18H25DT is designed to operate over a wide range of frequencies by means of a PLL and additional components. This allows the user to select the desired frequency from a very large range of frequencies.

Conclusion

The SIT9002AC-18H25DT is a precision programmable oscillator, ideal for applications that require very accurate frequency stability over a wide range of frequencies. It is well suited for Automotive, Industrial, Robotics and Telecommunications applications. The oscillator’s working principle is based on an oscillator circuit which combines an active device, an inductor and a capacitor to form a tuned LC circuit. The active device provides the necessary output power and gain to generate the oscillating output signal, while the PLL allows the user to select the desired frequency from a very large range of frequencies.

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