SIT9002AC-28N25DK

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Introduction

Programmable oscillators are essential components in a wide range of electronic systems, from communication systems to instrumentation and measurement systems. The SIT9002AC-28N25DK is one of the many programmable oscillators available in the market. It is a crystal oscillator produced by Silicon Laboratories, Inc. which features frequency range stability and low power consumption.

Description

The SIT9002AC-28N25DK is a voltage controlled crystal oscillator (VCXO) that operates between 28 MHz and 25 kHz and is available in a 0.3W 8-lead, plastic package. It provides very low phase jitter with a typical jitter of 105fsec at a center frequency of 25MHz. Its unique design allows it to accurately produce frequencies of up to 6MHz with excellent stability. The SIT9002AC-28N25DK is suitable for a wide range of applications, including communications systems, instrumentation, and measurement systems.

Application Field

The SIT9002AC-28N25DK programmable oscillator is designed for use in a variety of applications and can be used in applications such as frequency synthesizers, phase detectors, phase-locked loops and other related applications. It is also suitable for frequency control for precision timing in testing, instrumentation and measurement systems. Additionally, its frequency range makes it suitable for a wide range of communication applications including radio and cellular base stations, modems, etc.

Working Principle

The working principle of the SIT9002AC-28N25DK oscillator is based on the quartz crystals operation. A quartz crystal is a piezoelectric device which is able to vibrate in a unique frequency. These crystals are integrated with the oscillator circuit of the SIT9002AC-28N25DK in order to generate a periodic electrical signal with accurate frequency. The oscillator is then able to control the frequency of the signal by adjusting a voltage which controls the crystal’s vibration frequency.

The SIT9002AC-28N25DK is built around a low-power CMOS latch which is used for frequency range selection and properly distributing current to the crystal to store and maintain the oscillator frequency. The VCXO is also integrated with a charge pump voltage regulator and a low-noise amplifier which improves its stability by minimizing the crystal’s frequency drift due to external conditions. Additionally, the charge pump also enables the oscillator to operate with a wide range of supply voltage from 4V to 8V.

Conclusion

The SIT9002AC-28N25DK is a well-designed programmable oscillator with excellent features such as frequency range stability and low power consumption. Its low phase jitter and wide frequency range make it suitable for a variety of applications, including communications systems, instrumentation, and measurement systems. Additionally, its voltage controlled operating principle provides excellent accuracy and reliability which makes it an ideal choice for precision timing in a wide range of applications.

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