SIT8209AI-3F-18S-156.250000Y

Oscillators are important devices used in various circuits, providing a steady and accurate frequency waveform as its output. They are commonly used in the fields related to telecommunications, computers, galvanometers, and more. One example of an oscillator is the SIT8209AI-3F-18S-156.250000Y. In this article, we will discuss its application field and working principle.

Application field

The SIT8209AI-3F-18S-156.250000Y is a three-stage divide-by-16 frequency synthesizer designed for use in Television, Digital Satellite, Cable and Terrestrial Receivers. The frequency synthesizer allows for a low phase noise and low jitter operation, making it suitable for applications such as frequency lock loops and phase locked loops. It has a frequency range from 75MHz to 936MHz and is suitable for both continuous and discrete frequency tuning applications.

Other applications include frequency dividers, clock generators, time code generators, microwave sensor control, adaptive frequency hopping systems, and oscillator references.

Working principle

The operation of the SIT8209AI-3F-18S-156.250000Y is based on a direct digital synthesis (DDS) technique, which defines a frequency output by writing to a set of frequency control registers. By changing the values stored in the control registers, the oscillator can be set to different frequencies as needed. The device has four adjustable frequency dividers to provide frequency steps of 1/2, 1/4, 1/8 and 1/16.

The oscillator is powered by a 3.3V power supply and has a power-down feature for reducing the power consumption when in standby mode. It also incorporates a power-save mode, which allows it to operate at lower power when the load does not require full power, reducing power consumption to 1/8 of the normal mode.

The SIT8209AI-3F-18S-156.250000Y also incorporates various protection features such as an over-current protection circuit and an over-voltage protection circuit. It has a low power consumption of 4.5mA (typical) at a supply voltage of 3.3V. It also has good EMC performance, which is important for applications in the consumer market.

Conclusion

The SIT8209AI-3F-18S-156.250000Y is a versatile frequency synthesizer that is suitable for a wide range of applications. It has a wide frequency range and offers good EMC performance, making it ideal for applications in the consumer market. Its direct digital synthesis technique allows for easy and flexible frequency control via the tuning registers, allowing it to be used in a range of applications, including frequency dividers, clock generators, time code generators, microwave sensor control, adaptive frequency hopping systems, and oscillator references.