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FS784 Datasheet Low Emi Spectrum Spread Clock

Manufacturer: Cypress (now Infineon)

Overview: .. FS781/82/84 Low EMI Spectrum Spread Clock.

This datasheet includes multiple variants, all published together in a single manufacturer document.

General Description

The Cypress FS781/82/84 are Spread Spectrum clock generator ICs (SSCG) designed for the purpose of reducing electromagnetic interference (EMI) found in today’s high-speed digital systems.

The FS781/82/84 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.

Key Features

  • Spread Spectrum clock generator (SSCG) with 1×, 2×, and 4× outputs.
  • 6- to 82-MHz operating frequency range.
  • Modulates external clocks including crystals, crystal oscillators, or ceramic resonators.
  • Programmable modulation with simple R-C external loop filter (LF).
  • Center spread modulation.
  • 3V-5V power supply.
  • TTL-/CMOS-compatible outputs.
  • Low short-term jitter.
  • Low-power Dissipation.
  • 3.3 VDC = 37 mW.

More Datasheets from Cypress (now Infineon)

Part Number Description
FS781 (FS781 - FS784) Low EMI Spectrum Spread Clock
FS782 Low EMI Spectrum Spread Clock

FS784 Distributor