SIT9005ACR2H-28DO

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Programmable oscillators provide frequency accuracy and consistency, regardless of temperature and supply voltage changes. The SIT9005ACR2H-28DO is a surface mount programmable oscillator from SiTime that utilizes the company’s MEMS technology to deliver extremely accurate frequency control in a very small form factor. This oscillator offers superb performance to applications requiring precision timing, frequency control, and moderate power consumption. This article will discuss the application field and working principle of the SIT9005ACR2H-28DO programmable oscillator.

The SIT9005ACR2H–28DO is a voltage-controlled, temperature-compensated oscillator (VCXO). It has wide operating temperatures ranges of -40ºC to 85ºC and offers excellent stability of ±6.25 ppm (JEDEC standard) over that temperature range. The frequency range is from 12.5 MHz to 25.0 MHz, and the drive level is 0.5V P-P. In addition, this oscillator has an optional built-in load capacitance of 8pF for use in CMOS applications.

The programmable oscillator SIT9005ACR2H-28DO is suitable for applications demanding maximum control accuracy, such as telecommunications and data communications, computing and storage, industrial automation, military and aerospace, automotive, and medical and healthcare. In particular, this oscillator is designed for applications that require reliable frequency stability when exposed to temperature fluctuations, power supply changes, and environmental noise. For example, in telecommunication and data communication systems, this oscillator can provide consistent timing to ensure smooth transmission of data. In industrial automation, it can ensure accuracy of motor/servo control and precision monitoring. In military and aerospace applications, it allows for reliably tracking satellites, navigation, and precision guidance.

Besides its application field, the working principle of the SIT9005ACR2H–28DO is also worth exploring. Its operation is based on the properties of electromagnetic waves passing through quickly alternating electrical and magnetic fields. Its core structure consists of a specially designed nano-silicon resonator with a precisely machined silicon structure. In operation, this resonator will vibrate when a small amount of current is applied. This vibration frequency can be adjusted by varying the bias voltage applied to the resonator. The other components of the oscillator are the amplifier, filter, and voltage controlled capacitor (VCC). The amplifier amplifies the output signal from the resonator and provides buffering. The filter further shapes the output signals and filters out any noise. Finally, the VCC allows for fine-tuning of the oscillator’s frequency, providing the ability to precisely adjust the frequency for different applications.

In summary, the SIT9005ACR2H-28DO programmable oscillator, developed by SiTime, is ideal for a wide range of applications in telecom, consumer electronics, industrial automation, military and aerospace, automotive, and medical and healthcare. This oscillator incorporates MEMS technology to provide excellent frequency stability, even under changing conditions, and is suitable for applications that require reliable timing and frequency control. The oscillator works on the basis of vibrating a nano-silicon resonator and appropriately adjusting the bias voltage and capacitor settings. Through these features and its small size, this programmable oscillator is an excellent choice for applications needing precise timing control and frequency stability.

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