MB88155

Spread Spectrum Clock Generator

Cypress Semiconductor Corporation

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198 Champion Court

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San Jose

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408-943-2600

Document Number: 002-08298 Rev. *A

Revised December 21, 2016

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 clock output pin (REFOUT) as well as a

modulated clock output pin (CKOUT) .

Features

12.5 MHz to 20 MHz (Multiplied by 4)

12.5 MHz to 80 MHz

REFOUT

The same as input frequency (not multiplied)

40 MHz to 48 MHz (3rd overtone)

less than 150 ps

MB88155-1xx

20 MHz to 50 MHz

less than 100 ps

MB88155-4xx

less than 200 ps