SIT1602BIT8-30E

Programmable Oscillators

A Programmable Oscillator is a type of oscillator that can be electronically programmed with a particular frequency. Depending on the type of oscillator and its application field, setting up, tuning and calibration come with different complexities. Among oscillators, one example is the SIT1602BIT8-30E programmable oscillator. This article explores its application field and working principle.

Application field

The SIT1602BIT8-30E is a 1 PPM miniaturized TCXO (Temperature Compensated Crystal Oscillator). It offers low power use and fast start-up time while providing consistent frequency stability over a wide temperature range. Its application field is particularly in radio devices, such as 4G/5G base station, digital radio transmitters, and SDR (Software Defined Radio) products. In addition, its use extends to airborne systems, defense and aerospace instruments, GNSS (Global Navigation Satellite System) devices, and many more industrial applications.

Working principle

The SIT1602BIT8-30E operates using the same principles as most programmable oscillators. It has a crystal oscillator to generate electrical signals, and then employs a voltage-controlled oscillator (VCO) that receives the signal from the crystal oscillator and controls its frequency depending on the voltage applied. This is then matched against a reference frequency, typically using a phase-locked loop (PLL). The output frequency can then be adjusted using a digital command. The frequency range lies between 8MHz and 30MHz. It also comes with various other functions to increase its robustness, such as temperature sensors and measures that guard against output jitters.

Conclusion

In conclusion, the SIT1602BIT8-30E programmable oscillator is a type of oscillator particularly well-suited to radio devices and other industrial applications, including airborne systems, defense and aerospace instruments, and GNSS devices. Its working principle is the same as most programmable oscillators - its output frequency is modified by a VCO that adjusts depending on the voltage applied, and then matched against a reference frequency. Aligned with its wide frequency range, 8MHz to 30MHz, it is equipped with various features to enhance its capabilities.