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MB88155 - Spread Spectrum Clock Generator

General Description

MB88155 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.

Key Features

  • S.
  • Input frequency :.
  • 12.5 MHz to 50 MHz (Multiplied by 1) 12.5 MHz to 20 MHz (Multiplied by 4) Output frequency : CKOUT 12.5 MHz to 80 MHz REFOUT The same as input frequency (not multiplied) Modulation rate : ± 0.5%, ± 1.0% (center spread) ,.
  • 1.0%,.
  • 2.0% (Down spread) Equipped with oscillation circuit : range of oscillation 12.5 MHz to 40 MHz (Fundamental oscillation) 40 MHz to 48 MHz (3rd overtone) Modulation clock output Duty :.

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Full PDF Text Transcription for MB88155 (Reference)

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www.DataSheet4U.com FUJITSU SEMICONDUCTOR DATA SHEET DS04-29119-1E Spread Spectrum Clock Generator MB88155 ■ DESCRIPTION MB88155 is a clock generator for EMI (Electro Mag...

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B88155 ■ DESCRIPTION MB88155 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. For modulation, the MB88155 supports both center-spreading and down-spreading. It has a non-modulated output pin (REFOUT) as well as a modulated output pin (CKOUT) . ■ FEATURES • Input frequency : • • • • 12.5 MHz to 50 MHz (Multiplied by 1) 12.5 MHz to 20 MHz (Multiplied by 4) Output frequency : CKOUT 12.5 MHz to 80 MHz REFOUT The same as input frequency (not multip