NB2579ASNR2

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The NB2579ASNR2 is a clock generator and PLL designed to provide clock amplification, jitter reduction and frequency synthesizing. It is available in a 4x4mm quad flat non-leaded (QFN) package, making it suitable for a variety of applications. It has both external and internal reference clocks, providing an adjustable and reliable frequency range of 155.52 MHz to 156.25 MHz.

NB2579ASNR2 includes a Phase-Locked Loop (PLL) system, comprised of a Digital Frequency Synthesizer (DFS) that allows the user to program and generate any frequency they require within its specified limits. The system also includes an external reference clock selection and a post-divider selection to support high-frequency operation. In addition, the device also features a wide temperature range operation and an adjustable supply voltage from 2.5V to 3.3V.

The main application of the NB2579ASNR2 is for use in telecommunications systems such as network switches, routers and access points, as well as in data communication systems such as WAN, LAN and storage networks. Additionally, the device can be used in Frequency Division Multiplexing (FDM) systems, and in cable modems and optical transceivers.

The NB2579ASNR2 uses a VCO (Voltage Controlled Oscillator) to generate the desired frequencies. A reference and feedback signal from the external clock input are compared at the Frequency Detector (FD) stage and the difference is used as an error signal for the VCO. The PLL output is locked at the reference frequency when the reference frequency and the feedback signal are equal. The PLL circuitry is then used to generate the desired frequency using the external reference clock and post-divider settings.

The device also supports frequency hopping, allowing a rapid and higher level of frequency synthesis. This is achieved by controlling the frequency of the VCO while the reference clock is activated in order to synthesize additional frequencies. The external reference clock is also selectable, allowing for a wide range of frequency adjustment depending on the user\'s requirements.

The NB2579ASNR2 is a powerful clock generator, PLL and frequency synthesizer, providing a versatile and reliable solution for the telecommunications, data communication, and FDM systems. Its high precision and wide operating temperature ranges make it ideal for a variety of applications. Moreover, its design enables easy integration into any system and its low power mode reduces power consumption.

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