SIT9002AI-18H33DG

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Programmable oscillators are electronic devices which are used to generate a variety of frequency signals. These oscillators allow the user to program the frequency of the signal. The SIT9002AI-18H33DG is a programmable oscillator that falls into this category. This document will cover the application fields and working principle of this oscillator.

Application Field

The primary applications of the SIT9002AI-18H33DG are in the automotive, industrial, electronics, and telecommunications sectors. It is mainly used for frequency control and signal generation purposes, such as in the production of motors, communication systems, radio, TV, and computers. In addition, it is also used for test and measurement equipment and for measuring frequency, period and time.

Working Principle

The SIT9002AI-18H33DG utilises a sinusoidal wave looper technique for frequency control. In this technique, a waveform is sampled at a fixed interval and a fixed waveform pattern is generated by linking these samples. This technique is favoured due to its low cost and high accuracy in controlling an oscillator’s frequency. Once a waveform is generated, the waveform can be filtered through a low pass filter to obtain the desired signal type. It can also be used to output a digital square wave by setting the parameters accordingly.

The oscillator can be programmed using two external resistors, which are connected to the frequency setting pins. The signal frequency is determined by these resistors, and if the value of the resistors is changed, then the signal frequency can be changed accordingly. The accuracy of the signal frequency rate is adjustable in the range of +/- 100 ppm.

The output waveform is adjustable from 0.5V to the supply voltage of 10V. The device is able to handle temperatures of -40°C to +85°C and is also protected from ESD, supply transient and high temperature. It also has different power modes and can be programmed to remain in active or sleep mode, in order to conserve power.

Conclusion

The SIT9002AI-18H33DG is a programmable oscillator which has a variety of applications in automotive, industrial, electronics, and telecommunications sectors. It can be used to generate frequency signals, test and measure equipment, and measure frequency, period and time. It utilises a sinusoidal wave looper technique and has a signal accuracy adjustable in the range of +/- 100 ppm. In addition, it features different power modes and is protected from ESD, supply transient and high temperature.

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