SIT3809AI-C-25EX

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Programmable oscillators are all the rage in the world of electronics. They provide an innovative way for the electronics design engineer to easily customize their circuit designs for specific applications. The SIT3809AI-C-25EX programmable oscillator is no exception, providing a simple yet powerful configuration tool for creating a wide variety of oscillator functions. In this article, we will discuss the application field and working principle of the SIT3809AI-C-25EX oscillator.

Application Field

The SIT3809AI-C-25EX is a 24-bit, 42.5 Mbps programmable oscillator designed for a variety of applications. It is perfect for applications such as baseband filters, frequency synthesizers, and clock divider circuits for data and timing applications. The SIT3809AI-C-25EX offers a wide operating range from 0.5 MHz to 10 MHz, making it an ideal solution for both small-scale and large-scale systems. It is also extremely low power, with a programmable current of only 1.2 mA at 3.3V.

The SIT3809AI-C-25EX features a programmable frequency range of up to 10 MHz, a low phase noise of -93 dBc/Hz at 10 KHz offset, and a fast settling time of 900ps. The fundamental frequency stability is ±20 ppm over the temperature range of 0 to 70°C. These features make this programmable oscillator incredibly versatile and suitable for a wide range of industries and applications, including communications and industrial automation, automotive, and medical technologies.

Working Principle

The SIT3809AI-C-25EX programmable oscillator operates on the principle of a voltage-controlled oscillator (VCO). It consists of a voltage-to-frequency converter and a frequency-to-voltage converter circuit. The frequency of the oscillator is determined by the voltage applied to the voltage-to-frequency converter circuit, which is configured with a set of capacitors, resistors, and diodes. The frequency-to-voltage converter circuit then takes the output frequency from the voltage-to-frequency converter circuit and converts it to a voltage, which is used to control the frequency adjustments of the oscillator.

The SIT3809AI-C-25EX features a three-wire control interface for programming the waveform characteristics of the output signal. It provides 24-bit programmability for setting the waveform amplitude and duty cycle. The programming speed is up to 2 Mbits/sec and the waveform period averages 300ps. The waveform characteristics can be programmed with the serial programming software provided.

The SIT3809AI-C-25EX is a versatile solution for applications requiring low power consumption and precise waveform control. It is easy to use and extremely reliable, making it an ideal choice for both small and large-scale systems. With its wide frequency range, low phase noise, and fast settling time, the SIT3809AI-C-25EX programmable oscillator is an excellent choice for any electronics design requiring a highly accurate, programmable oscillator solution.

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