Low Emi Spectrum Spread Clock Semiconductor

The Cypress FS781 FS782 FS784 are Spread Spectrum Clock generator ICs (SSCG) designed for the purpose of reducing electromagnetic interference (EMI) found in todays high-speed digital systems. The FS781 FS782 FS784 SSCG Clocks use a Cypress-proprietary technology to modulate the input Clock frequency, XIN, by modulating the frequency of the digital Clock By modulating the reference Clock the measured EMI at the fundamental and harmonic frequencies of FSOUT is greatly reduced. This reduction in radiated energy CAN significantly reduce the cost of complying with regulatory requirements without degrading digital waveforms. The Cypress FS781 FS782 FS784 Clocks are very simple and versatile devices to use. By programming the two range select lines, S0 and S1, any frequency from 6- to 82-MHz operating range CAN be selected. The FS781 FS782 FS784 are designed to operate over a very wide range of input frequencies and provides 1, 2, and 4 modulated Clock outputs. The FS78x devices have a simple frequency selection table that allows operation from 6 MHz to 82 MHz in four separate ranges. The bandwidth of the frequency spread at FSOUT is determined by the values of the loop Filter components. The modulation rate is determined internally by the input frequency and the selected input frequency range. By Cypress Semiconductor Corp.
FS781 's PackagesFS781 's pdf datasheet

FS781 Pinout, Pinouts
FS781 pinout,Pin out
This is one package pinout of FS781,If you need more pinouts please download FS781's pdf datasheet.

FS781 Application circuits
FS781 circuits
This is one application circuit of FS781,If you need more circuits,please download FS781's pdf datasheet.

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