AD9518-2ABCPZ-RL7

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The AD9518-2ABCPZ-RL7 is a high-performance, low-jitter, low-noise frequency synthesizer. This device is an excellent choice for clock generation applications where low jitter, low noise and lightning-fast switching between any of the multiple output frequencies are key requirements.

The AD9518-2ABCPZ-RL7 operates in either of two modes: a programmable frequency synthesizer mode with direct digital synthesizer (DDS) and a free-running mode with dual-modulus frequency dividers. This device offers seven programmable frequency outputs of up to 1.3GHz and a dual reference input with a differential input structure. The AD9518-2ABCPZ-RL7 operates from a single 3.3 V supply, and it is immune to supply transients.

This clock generator provides phase-locked loop (PLL) synthesis using high-accuracy digital phase interpolators, and it also supports dual-modulus prescalers, allowing it to achieve high-resolution frequency changes. It is designed to operate in various application fields, such as system timing and synchronization, clock-phase management, clock distribution, clock conversion and frequency multiplication.

Its wide input range allows it to accommodate 3.2 to 1.8 V differential clock sources, as well as single-ended clock sources. It eliminates the need for frequency trimming, as the synthesized output frequency can be adjusted digitally within several range covers, from 0.3 Hz to 1.3 GHz.

The AD9518-2ABCPZ-RL7 features a 0 - 125 MHz frequency range with a resolution of 0.001 Hz, low jitter of 0.85 ps, operating temperature range from -40 °C to +85 °C, and minimal power consumption of 2.5 mW. This device includes seven programmable outputs: one “Zero Delay” output, four Double Data Rate (DDR) outputs, and two Spread Spectrum (SS) outputs.

The AD9518-2ABCPZ-RL7 utilizes a proprietary digital frequency programming system, allowing users to program multiple frequencies and switch between them rapidly. The device also enables users to program different output formats, such as bidirectional LVDS, LVPECL, and HCSL. Additionally, this device provides five programmable SS outputs that support multiple SS modulation schemes.

In addition, the device includes a selectable clock generator with the ability to support multiple frequency ranges. This device also provides 16-bit resolution digital-to-analog converters (DACs) that enable the configuration of output frequencies to within 0.1 through 4.0 GHz. The frequency programming system is user-configurable, allowing high-resolution frequency changes that can meet various application needs.

A key advantage of the AD9518-2ABCPZ-RL7 is that it utilizes a low-noise, high-accuracy, low-jitter synthesizer core with a digital phase-lock loop, enabling the device to rapidly switch between multiple frequencies. The PLL synthesizer circuitry at the heart of the device also helps reduce power consumption, resulting in a smaller overall power envelope than analog-based synthesis solutions.

Overall, the AD9518-2ABCPZ-RL7 is an excellent choice for frequency synthesizer applications that require low jitter and noise, as well as fast switching between output frequencies. This device is ideal for applications such as system timing and synchronization, clock-phase management, clock distribution, clock conversion and frequency multiplication, as well as other applications where precision frequency generation is needed.

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