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Programmable Oscillators

The term programmable oscillator covers a wide range of products that allow for the electrical signal properties to be adjusted in a variety of ways. It is an oscillator whose signal parameters, such as frequency, amplitude, phase, and pulse width, can be altered or varied under software or digital control. This technology is used to match signal frequencies with the requirements of a particular application or system.

As an example, SIT9002AI-18N33DD is a programmable oscillator, with an adjustable frequency of 15 MHz to 33 MHz and a maximum operating temperature of -40°C to +105°C. It features a high-accuracy reference frequency of 25 MHz with a ±1 ppm tolerance and wide supply voltage range of 2.8 V to 5.5 V.

Application Field

Programmable oscillators, like SIT9002AI-18N33DD, are suited for a wide range of applications from monitoring, measuring and testing in industrial, scientific or medical fields to entertainment and communication systems including mobile phones, satellite, wireless and mobile communication systems. As an example, the device is suitable for transmitting, receiving, frequency synthesizing, and timing applications in industrial, security and automotive systems.

Working Principle

The SIT9002AI-18N33DD programming oscillator is based on the basic principles of oscillation and is designed to produce a periodic sinusoidal wave at a predetermined frequency. The working principle is quite simple, it can be seen as a combination of a set of electronic components, usually a resistor and a capacitor, connected in a loop. When electricity passes through the loop, the capacitor and resistor store some amount of energy, which is then sent back and forth in the oscillating loop.

This oscillatory activity produces an regular output signal, which is a sinusoidal wave with a certain frequency and amplitude. By adjusting the values of the resistor and the capacitor as well as the power supply voltage, the oscillation frequency and amplitude can be controlled and programmed to match the different requirements of a particular application.

In addition, special components such as mixers and amplifiers can be added to the oscillator’s circuit in order to generate other types of output signals, like square waves or pulses.

Conclusion

Programmable oscillators, like SIT9002AI-18N33DD, are electronic devices which allow the control of their output parameters such as frequency, amplitude and phase in order to create a signal suitable for a particular application. They are used in a variety of fields where an adjustable and reliable frequency source is required.

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