AD9578BCPZ

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The AD9578BCPZ is a clock generator and programmable PLL (Phase Locked Loop) designed for a wide range of applications where buying and maintaining individual clocks is slow and costly. This device is designed to provide a high-performance and programmable clock solution, which simplifies the design and reduces the number of components required to deliver a system. Its on-chip PLL enables dynamic and fast frequency shifting, making it a popular choice for a variety of consumer, image sensor and embedded systems that require predictable timing and power consumption.

AD9578BCPZ has been designed to reduce system cost, improve design implementability, and offer best-in-class features such as reduced output skews, improved jitter performance, adjustable loop bandwidth and a wide operating voltage and temperature range. Through configurable dividers and post dividers, AD9578BCPZ can support a variety of high speed output formats, which is key for high performance applications.

Application Fields

The AD9578BCPZ is suitable for many applications, such as digital video systems, automotive systems, and telecommunications. It can provide a wide range of frequencies with low jitter performance, and its small size and low power consumption makes it ideal for use in space-constrained and power-sensitive applications. It also features adjustable loop bandwidth, making it suitable for many mobile and emerging high-speed designs. It is also an ideal choice for applications that require multiple synchronized clocks. The AD9578BCPZ can provide synchronous clocks for different domains, thus avoiding the need for multiple clock sources.

Working Principle

The AD9578BCPZ operates on a phase-locked loop (PLL) which can be configured to generate a variety of clock frequencies. It consists of an input frequency divider, an on-chip Voltage Controlled Oscillator (VCO), a comparison mechanism, an output frequency divider and an output buffer. It works by dividing an input frequency like an external crystal, or an externally generated clock, and comparing it to the internal VCO signal. If the two signals are not locked, the difference is used to adjust the VCO frequency, and thus the output frequency, until the two signals are very close to each other, at which point the loop is said to have "locked". It then continues in a cycle, comparing the input frequency signal to the output signal, and using the difference to adjust the output frequency as long as it is close to the desired output frequency.

The AD9578BCPZ can be programmed so that it can generate any frequency from almost any input clock source. It can generate from one to eight output clock signals and each output signal can be configured with its own output divider and post divider. Its low jitter performance and flexibility make it an ideal choice for applications requiring multiple synchronized signals.

The AD9578BCPZ can be used in a variety of systems and applications including communications, industrial automation, automotive, consumer electronics and image sensors. Its complete programmability and ability to generate high-frequency signals makes it an ideal solution for a wide range of applications and helps to simplify design, reduce system costs and improve implementation time and performance.

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