SIT8009BCR21-25S

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Programmable oscillators are frequency and timing control solutions relying on the combination of hardware and software. They are designed to generate precise frequency and timing signals at various frequencies in an array of applications. SIT8009BCR21-25S, a type of programmable oscillator, is widely applied in numerous fields and takes its working principle as the basis.

Applications of SIT8009BCR21-25S

SIT8009BCR21-25S, designed by Silicon International Technology, is a programmable oscillator consisting of a synthesizable XTAL oscillator, pass transistors, and a frequency selective filter. Its major characteristics include a frequency range from 1MHz to 25MHz, frequency tolerance up to ±25ppm, output frequency stability up to ±10ppm@ 25℃, and power supply voltage from 4.5V to 5.5V. Owing to its superior performance, it is widely applied in the areas such as clock and timing in telecommunications, HDDs, FPGAs, and clock driving in computer, instrumentation, and data acquisition systems.

Working Principle of SIT8009BCR21-25S

The basic design of the SIT8009BCR21-25S involves a voltage controlled crystal oscillator(VCXO), pass transistors, and frequency-selective filter (FF). The VCXO, as the heart of the oscillator, is comprised of a quartz crystal resonator and an integrated circuit. It oscillates at the frequency determined by the quartz crystal, and the frequency can be adjusted to a small extent by changing the control voltage. The pass transistors are responsible for the passing of certain frequencies and the preventing of other frequencies from being sent to the output. The FF compensates the frequency response of the pass transistors, so that other frequencies except the desired one can be prevented from entering the output.

In conclusion, SIT8009BCR21-25S is a type of programmable oscillator widely applied in clock and timing in telecommunications, HDDs, FPGAs, clock driving in computer, instrumentation, and data acquisition systems. It is internally composed of a VCXO, pass transistors, and FF, and it generates precise frequency and timing signals at various frequencies.

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