SIT9002AI-43N25DQ

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Programmable Oscillators

Programmable oscillators are oscillators that are designed to be adjustable within specific ranges of frequencies and are often used in electronic circuitry. They offer the user the ability to create a wide range of signals and frequencies, depending on the application. SIT9002AI-43N25DQ is one of the programmable oscillators developed by Sitronix Corporation, and it has many unique features for different applications. In this article, we will discuss the application field and working principle of SIT9002AI-43N25DQ.

Application Field of SIT9002AI-43N25DQ

SIT9002AI-43N25DQ is a highly-integrated programmable oscillator designed to be used in a wide range of applications. It is usually used in central processing unit (CPU) and peripheral integrated circuits (PICs) as well as in signal processing, frequency conversion and signal synthesis applications such as transceivers and modems. Besides, SIT9002AI-43N25DQ can be used in LED and LCD displays, digital audio, video, and communications systems. Combined with a crystal, it can also provide high frequency accuracy and wide tuning range.

Working Principle of SIT9002AI-43N25DQ

SIT9002AI-43N25DQ utilizes a programmable, on-chip frequency divider, PLL, and crystal oscillator. It consists of a crystal oscillator, frequency divider, and phase-locked loop, with the crystal oscillator being the main component. The crystal oscillator is the heart of the device and creates high-frequency clock signals for the internal clock tree. The frequency divider reduces the frequency of the internal clock tree and provides high-precision frequencies within the programmable range. Finally, the phase-locked loop (PLL) synchronizes the frequency between the crystal oscillator and the output signal.

In addition, SIT9002AI-43N25DQ has an on-chip programmable power-on reset (POR) circuit and internal temperature sensor, which allows it to monitor the operating temperature and ensure better temperature stability. It also features two low-power modes to reduce power consumption. The first mode is a “sleep mode”, which reduces power consumption when the oscillator is idle, and the second mode is a “shutdown mode”, which shuts down the oscillator to reduce power consumption.

Conclusion

SIT9002AI-43N25DQ is an integrated programmable oscillator with wide application fields and multiple advantages. It is highly suitable for CPU and PICs, as well as signal processing, frequency conversion, and signal synthesis applications such as transceivers and modems. Its on-chip POR and temperature sensor ensures better stability, while its two low-power modes reduce power consumption when the oscillator is idle or shut down.

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