84021AYLF

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Clock/Timing components play an important role in numerous applications, providing the vital timing and synchronization signals that allow systems to function. The 84021AYLF is a voltage-controlled oscillator (VCO) frequency synthesizer, with an operating frequency range of 20 to 30 MHz and a minimum tuning sensitivity of 8 MHz/V.

The 84021AYLF serves as a hex frequency synthesizer, providing up to six selectable frequencies ranging from 203 KHz to 30 MHz. It can be programmed for multiple operating modes, including frequency division, frequency multiplication, and signal signal band width, making it an ideal solution for a range of communication applications such as W-CDMA, CDMA and other multi-channel use.

The 84021AYLF integrates a Phase-Locked Loop (PLL) comprised of a VCO, a frequency divider, a phase detector, and a programmable charge pump. By stabilizing the oscillating frequency of the VCO, the PLL operates to generate a signal with greatly reduced frequency drift and jitter.Integrated loop bandwidth and filter controls allow for the fine-tuning of loop bandwidth and noise performance.

In normal operation, the 84021AYLF operates on a 5 V DC supply, drawing a maximum current of 44 mA. Its low phase noise, low frequency pull-in/pull-out rates, and wide dynamic tuning range make it suitable for applications involving phase-shifted signals, with its allowable VDD range extending from 3.3 V to 5.5 V.

The 84021AYLF is useful in a wide range of application fields, including in W-CDMA and CDMA, wireless base-stations, satellite communication, cellular handsets, digital television, terrestrial wireless LANs and wireless modem systems. Moreover, due to its low power consumption and integrated loop bandwidth/filter controls, it is also ideal for PLL clock reconstruction and clock recovery tasks requiring small size and low power.

In short, the 84021AYLF is a powerful and reliable device, designed to provide a large variety of applications the high performance frequency synthesis capabilities necessary for reliable and efficient operation. Offering a host of features such as a wide operating frequency range, low power requirements and small size, the 84021AYLF is a highly versatile and cost-effective solution for a range of clock/timing related applications.

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