SIT3821AI-1B-25NH

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Programmable oscillators are versatile and reliable devices used in a wide variety of applications, from precision medical technology and laboratory instruments to high-performance communication systems. The SIT3821AI-1B-25NH is one such device, widely deployed in industrial, scientific, and commercial applications. This article provides an overview of the device, its features, and its working principles.

The SIT3821AI-1B-25NH is a programmable digital oscillator, optimized for applications requiring high speed, precision, and reliability. It features a wide frequency range (6-300MHz), adjustable frequency stability (±25ppm typ.), and a low power consumption (1.2W max.). In addition, the SIT3821AI-1B-25NH includes a programmable, single-ended output impedance, allowing for a variety of applications requiring very specific output characteristics. As an adjustable device, the SIT3821AI-1B-25NH does not require any external components for frequency adjustment or for tuning band-pass and band-stop filters.

The primary feature of the SIT3821AI-1B-25NH is its versatility and stability. The frequency is programmable via a single-ended logic input, allowing a wide variety of adjustable frequency settings (±50%). Furthermore, the device features high-resolution programmability, allowing fine frequency adjustments, with a total resolution of 0.3ppm. Moreover, the SIT3821AI-1B-25NH\'s frequency stability and accuracy are notably high. For example, the integrated voltage control loop allows very precise frequency control with frequency accuracy of ±25ppm (±0.25%).

In addition to its adjustable and stable frequency characteristics, the SIT3821AI-1B-25NH is also designed for maximum reliability and high speed performance. The signal is output via a single-ended logic output, with CMOS-compatible signal levels (TTL and LVCMOS). The device provides a positive going clock signal, with switching speeds up to 300MHz and a high signal-to-noise ratio of more than 140dBc/Hz. Furthermore, the SIT3821AI-1B-25NH is designed to operate in harsh environmental conditions, including temperature ranges of -40 to +85℃.

The SIT3821AI-1B-25NH is programmed using an external control circuitry, with some variants featuring a dedicated control board. The programming inputs can be configured to support single-ended logic levels, as well as other DC voltage levels. The device can also be synchronized to an external signal, with the external control circuitry setting the internal phase-locked-loop (PLL) parameters to the desired frequency. Furthermore, the device is designed to automatically regulate the frequency of the external PLL with temperature and voltage variations.

The SIT3821AI-1B-25NH is a versatile and powerful device, applicable to a broad range of industrial, scientific, and commercial applications, as well as for precision medical technology and laboratory instruments. Its adjustable and stable frequency characteristics, wide frequency range, and low power consumption make it an ideal choice for applications requiring high speed and reliable performance. Moreover, its easy programming and synchronization capabilities make it easy to integrate into existing systems.

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