CY26121ZI-21T

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The CY26121ZI-21T is a programmable clock generator and synthesizer for a variety of applications. It is a customizable, fully integrated, clock solution, providing the flexibility and cost savings of a full-featured clock generator and synthesizer. With 4 programmable PLLs, frequency multiplexers, 1:6 dividers, reference clock dividers, 1:4 prescalers, 1-3 modulo dividers, programmable jitter attenuation, skew compensation and spread spectrum support, the CY26121ZI-21T provides all the features necessary for a variety of applications.

The CY26121ZI-21T is well suited for timing-critical applications such as industrial, automotive, data communications, radio, wifi and other communication systems. It can also be used in applications such as power supplies, controllers, and analog and digital audio systems. The device can accommodate both common and differential reference clocks, and works seamlessly with any source, accommodating a range of frequencies from a few kHz to beyond 600 MHz.

The CY26121ZI-21T supports output clocks ranging from 1Hz to 350MHz, and can generate up to 4 clocks with a single device, eliminating the need to use multiple devices. The device also features integrated jitter attenuation and improved clock multiplication, enabling it to provide low-jitter signals even in noisy environments. The device also features automatic skew compensation, which allows it to optimize clock frequencies and delay settings with minimal effort.

The working principle of the device resides in its 4 programmable PLLs, frequency multiplexers, and other components. When an input reference clock is applied, it passes through a frequency multiplexer and is then fed into the PLLs. Each PLL has a programmable loop filter and VCO, where the reference clock is combined with VCO outputs to produce the desired frequency. The PLL also includes a phase detector and a programmable divider that can generate frequencies from 1Hz up to 350MHz, depending on the desired output frequency.

The frequency multiplexers divide the reference frequency into different output clocks. The programmable dividers are used to divide the output clocks further, allowing for a range of frequencies to be generated from a single reference clock. The frequency multiplexers and dividers can also be used to generate multiple clocks that have different frequencies, thus increasing the flexibility of the system.

The CY26121ZI-21T also features output skew compensation, which helps ensure that the output clocks have the same timing characteristics. This is an important feature for many types of applications, as it enables a system to accurately monitor and control the performance of a wide range of clocks. Lastly, the device supports spread spectrum clocking, which allows it to reduce the spectral energy of a signal, optimizing the performance in bandwidth-limited applications.

Overall, the CY26121ZI-21T is a powerful, highly flexible, and cost-effective clock solution. By providing a single device solution with 4 programmable PLLs and frequency multiplexers, it is ideal for timing-critical applications such as industrial, automotive, data communications, radio, wifi and other communication systems. It also provides features such as integrated jitter attenuation, skew compensation and spread spectrum support, making it a perfect fit for most timing-related tasks.

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