AD9518-3ABCPZ-RL7

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AD9518-3ABCPZ-RL7 is a low phase noise, three-output, VCXO-based clock generator from Analog Devices, Inc. The AD9518-3ABCPZ-RL7 is designed to offer extremely low phase noise performance in a small form factor, thus making it ideal for use in handheld and portable applications. This clock generator features a three-phase output and adjustable frequency range, making it suitable for a wide range of applications such as wireless communications, satellite infrastructure, test and measurement equipment, and broadband internet access systems.

The AD9518-3ABCPZ-RL7 operates in a phase locked loop (PLL) configuration. PLLs are widely used in electronic systems to generate clock signals with very precise frequency control. PLLs work by comparing an input signal to a generated signal and adjusting the frequency of the output to match the input. This ensures that the output signal is at exactly the same frequency as the input, with no phase error.

The AD9518-3ABCPZ-RL7 features a high performance voltage controlled crystal oscillator (VCXO). A VCXO is an oscillator that uses a tunable crystal to generate the frequency. Variable voltage applied to the VCXO controls the frequency of the output signal. The AD9518-3ABCPZ-RL7 features an adjustable frequency range from 10 to 1000 MHz in 10 MHz steps. This makes it suitable for use in many applications such as mobile phones, cellular base stations, and digital broadcast systems.

The general principle of operation of the AD9518-3ABCPZ-RL7 is fairly simple. The clock generator accepts an input reference signal and generates three clock signals with a very low phase noise. The input can be from a crystal oscillator, a voltage controlled oscillator, or an external clock source. The generated clock signals are phase and frequency aligned to the reference signal. The clock generator includes an integrated PLL loop filter and a three-phase frequency synthesizer, as well as a voltage controlled oscillator. The PLL adjusts the frequency of the VCXO to lock onto the reference signal, ensuring that the output clock signals are of the highest quality. The frequency synthesizer produces the required clock frequencies with very low jitter and low phase noise.

The AD9518-3ABCPZ-RL7 is suitable for use in a wide range of applications requiring low jitter, low phase noise clocks. These include wireless communications, satellite infrastructure, test and measurement equipment, calibration systems, and broadband internet access systems. The AD9518-3ABCPZ-RL7 offers excellent performance and is available in a small, RoHS compliant package. It is an ideal solution for use in handheld and portable applications requiring very low phase noise performance.

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