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MB88154 - Spread Spectrum Clock Generator

Description

MB88154 is a clock generator for EMI (Electro Magnetic Interference) reduction.

The peak of unnecessary radiation noise (EMI) can be attenuated by making the oscillation frequency slightly modulate periodically with the internal modulator.

Features

  • cy Frequency at modulation OFF Time.
  • 0.5 %.
  • 1.0 % fMOD = 12.5 kHz (Typ) 11 MB88154.
  • LOCK-UP TIME 3.0 V Internal clock stabilization wait time VDD XIN Setting pin SEL0, SEL1 CKOUT VIH tLK (lock-up time ) If the setting pin is fixed at the “H.

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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www.DataSheet4U.com FUJITSU SEMICONDUCTOR DATA SHEET DS04-29115-2E Spread Spectrum Clock Generator MB88154 ■ DESCRIPTION MB88154 is a clock generator for EMI (Electro Magnetic Interference) reduction. The peak of unnecessary radiation noise (EMI) can be attenuated by making the oscillation frequency slightly modulate periodically with the internal modulator. It corresponds to both of the center spread which modulates input frequency as Middle Centered and down spread which modulates so as not to exceed input frequency. ■ FEATURE • Input frequency : 16.6 MHz to 67 MHz • Output frequency: 16.6 MHz to 67 MHz (One time input frequency) • Modulation rate can select from ± 0.5%, ± 1.0%, ± 1.5% or − 1.0%, − 2.0%, − 3.0%. (For center spread / down spread.
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