DS04-29128-1Ea

FUJITSU MICROELECTRONICS

DATA SHEET

Copyright©2007-2008 FUJITSU MICROELECTRONICS LIMITED All rights reserved

2007.6

Spread Spectrum Clock Generator

MB88153A

MB88153A-100/101/110/111

■ DESCRIPTION

MB88153A is a clock generator for EMI (Electro Magnetic Interference) reduction. The peak of unnecessary (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

• Power down pin : 10

µA (Typ-sample) consumption current at power down

• Input frequency : 16.6 MHz to 134 MHz

• Output frequency : 16.6 MHz to 134 MHz (One-fold input frequency)

• Modulation rate can select from

± 0.5%, ± 1.5% − 1.0% or − 3.0%. (For center spread / down spread.)

• Modulation clock output Duty : 40

% to 60%

• Modulation clock Cycle-Cycle Jitter : Less than 100 ps

• Low current consumption by CMOS process : 4.0 mA (24 MHz : Typ-sample, no load)

• Power supply voltage : 3.3 V

± 0.3 V

• Operating temperature :

− 40 °C to +85 °C

• Package : 8-pin SOP