SIT3821AC-1C-25EZ

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Programmable oscillators are becoming an increasingly popular component in advanced electronics due to their high accuracy, stability, and flexibility. These devices can be used in applications ranging from communications, metering, and medical devices to consumer electronics and consumer appliances. The SIT3821AC-1C-25EZ is a perfect example of a programmable oscillator, with its wide range of features and benefits. Here, we take a look at this component’s application field and working principle.

Application Field of SIT3821AC-1C-25EZ

The SIT3821AC-1C-25EZ is a commercial-grade, 24-bit, low-cost programmable oscillator with a range of up to 4 GHz. Its frequency range is tailored to address the needs of a wide range of applications, such as wireless, automotive, medical and consumer electronics. The product is targeted for use in highly demanding applications, and designers are able to use the device for controlling high-speed signals with excellent accuracy and precision.

The device also offers advantages in terms of packaging. It comes in a variety of small packages, including 5mm x 3mm, 7mm x 5mm, and 9mm x 5mm sizes. These packages are ideal for applications where space is at a premium, as they enable the device to be placed in a circuit without the need for a large PCB footprint or extra components.

The SIT3821AC-1C-25EZ can also be integrated into systems that utilize sensitive devices, as its low power consumption ensures that the system is kept running without significant thermal impact. This makes the device well-suited for use in devices that require long-term reliable operation.

Working Principle of SIT3821AC-1C-25EZ

The SIT3821AC-1C-25EZ uses high-resolution analog filters to achieve its clock accuracy. These filters are programmable by register bits and through the integrated design, it enables the oscillator to generate a precise frequency output from 0.1 Hz up to 4 GHz. When operating in the frequency range of 1.2 to 3.7 GHz, the device can easily adjust with a programmable accuracy of ±0.25ppm or better. Additionally, the SIT3821AC-1C-25EZ features an adjustable launch time delay of up to 0.12 μs to help reduce signal jitter and prevent oscillator lock-ups.

The SIT3821AC-1C-25EZ is designed around a flexible oscillator controller, which allows designers to modify the clock signal in several ways. The device’s register allows the user to adjust the filter’s slope, set a reference frequency, enable or disable frequency compensation, and adjust the sharpness of the frequency output. Additionally, the device offers a power-saving mode that enables the device to switch to a low-power state when not in use.

The SIT3821AC-1C-25EZ also features a wide range of features that enable its use in applications that require tight frequency control. The device can be programmed to support up to 256 frequency bands, spanning a total range of 4 GHz, with adjustable coverage per band. Additionally, the device includes an abort auto-quit function, which allows the oscillator to stop running when the frequency output deviates beyond the required output level.

In summary, the SIT3821AC-1C-25EZ is a powerful and highly integrated programmable oscillator that is designed to meet the needs of a wide range of modern applications. Its ability to be programmed to precisely control frequency output, combined with its flexibility in terms of packages, enables engineers to create solutions that demand tight frequency control and accuracy.

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