SIT3809AI-2-25EH

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

Programmable oscillators are a type of circuit element used to generate a signal of specific frequency usually used to carry out various operations related to the timing or synchronization of an electronic system, such as phase shifting, frequency synthesizing and so on. Active or passive components integrated inside the oscillator can store various configuration parameters that configure the oscillator’s behavior and determine the output frequency produced. In this article, we will discuss the application fields and working principle of the SIT3809AI-2-25EH programmable oscillator, a state-of-the-art product with excellent features such as low-power consumption, small footprint, and high frequency and temperature stability.

The SIT3809AI-2-25EH has a wide range of application fields including digital radio systems, consumer electronics, power control systems, automotive electronics, medical devices, communication systems and industrial automation. It is suitable for applications that require the control of several system components due to its outstanding features, such as the high frequency stability of up to 0.04ppm over the operating temperature range from -20℃ to 70℃ and the ability to generate signals from 500Hz to 40MHz.

The working principle of the SIT3809AI-2-25EH programmable oscillator revolves around its standard CMOS feedback loop, which regulates the oscillation frequency generated by the internal ATV, or Active Temperature Variation, module. The ATV module serves as the primary oscillator, as it produces a stable and low noise core frequency. This core frequency is then fed into the feedback loop, where the oscillator’s output frequency is determined. The output frequency is further refined and regulated by the programmable configuration parameters, such as the external resistor values, which are stored in the oscillator’s nonvolatile memory.

The ATV module is the core of the SIT3809AI-2-25EH circuit, as it produces the primary frequency for the oscillation. The main components of the module are the Resonant Frequency Discriminator, or RFD, and the Programmable Frequency Discriminator. The RFD detects the oscillator’s resonant frequency and produces an output signal to the PFD, which converts the RFD’s output into a discrete voltage signal. This signal is then fed into the ATV module’s current-controlled oscillator. The output of the current-controlled oscillator is then fed into the feedback loop, where it is combined with the configuration parameters stored in the oscillator’s nonvolatile memory. The resulting output signal is finally adjusted and regulated by the oscillator’s low-noise amplifier and terminator circuit.

In summary, the SIT3809AI-2-25EH programmable oscillator is a highly reliable circuit element that can be used in a variety of applications, from digital radio communication systems to medical devices, that require the control of several system components. Its standard CMOS feedback loop regulates the output frequency of the oscillator based on the primary frequency produced by the ATV module and further refined by various configuration parameters stored in the oscillator’s nonvolatile memory. Its exceptional features make it a great choice for applications requiring high frequency and temperature stability and low power consumption.

The specific data is subject to PDF, and the above content is for reference