CY22801KSXC-021

Series:	*
Part Status:	Active
Base Part Number:	CY22801

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CY22801KSXC-021 is a clock generator, a phase-lock loop (PLL) and a frequency synthesizer in one. It is a low-power and low-noise device that can generate high quality clock and signal sources in frequency ranges from kHz to hundreds of MHz. The Cypress CY22801KSC-021 has a wide variety of applications, including telecommunications systems, clock signal source generators and signal translators, frequency synthesizers, and clock signal distributions, among others.The CY22801KSC-021 is a programmable clock generator, designed to supply high-resolution and wide-bandwidth SYSREF (system reference) and MCLK (master clock) signals. It has a built-in 24-bit PLL and uses two low-skew clock inputs: XTAL and RCOSC (an external crystal or an internal oscillator). The PLL generates high-resolution and wide-bandwidth output signals. The internal frequency synthesizer can generate up to four output frequencies and their differences. The PLL and the frequency synthesizer can be controlled by an I2C bus.The device also supports clock signal distribution, where multiple copies of the input clock are output with one independent phase shift of up to 8ps per output. The CY22801KSC-021 uses a COMBO flip-flop and a Super Skew (or Fine Skew) circuit, which allow the device to minimize the clock skews to the lowest possible. The device supports bidirectional and embeddedLVDS, HCSL (high-speed current steering logic), LVCMOS, and LVDS I/O standards.The functionality of the CY22801KSC-021 is divided into two separate blocks. The first one is the PLL, which has two parts: the SYSREF generation circuit and the MCLK generation circuit. The PLL is programmed with a reference frequency and an adjustable divider ratio. The output frequency is the sum of the reference frequency and the PLL output frequency. The second block is the frequency synthesizer, which is used to generate multiple frequencies and their differences. The frequency synthesizer can be programmed with two or four registers dependent on the desired mode of operation. The output frequency is the sum of all the programmed registers of the frequency synthesizer.In conclusion, the CY22801KSC-021 is a highly integrated clock generator, PLL and frequency synthesizer in one that can supply high-resolution and wide-bandwidth SYSREF signals, MCLK signals and also can distinguish up to four frequencies. The device has wide operating temperature range, low power events and supports various output standards making it suitable for a wide range of applications. Apart from that, the device also supports clock signal distribution with adjustable phase shift, which allows the device to be used in clock synchronization application areas with precise timing requirements.

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