MB88151A Datasheet, PDF (1/22 Pages) Fujitsu Component Limited. – Spread Spectrum Clock Generator

FUJITSU SEMICONDUCTOR
DATA SHEET
DS04-29127-1E
ASSP
Spread Spectrum Clock Generator
MB88151A
■ DESCRIPTION
MB88151A 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 frequency in modulation off
as Middle Centered and down spread which modulates so as not to exceed frequency in modulation off.
■ FEATURES
MB88151A-
100/101
(multiply-by-1)
MB88151A-
200/201
(multiply-by-2)
MB88151A-
400/401
(multiply-by-4)
MB88151A-
500/501
(multiply-by-1/2)
MB88151A-
800/801
(multiply-by-8)
Input
frequency/
Output
frequency
16.6 MHz to 33.4 MHz/ 16.6 MHz to 33.4 MHz/ 16.6 MHz to 33.4 MHz/ 16.6 MHz to 33.4 MHz/ 8.3 MHz to 16.7 MHz
16.6 MHz to 33.4 MHz 33.2 MHz to 66.8 MHz 66.4 MHz to 133.6 MHz 8.3 MHz to 16.7 MHz 66.4 MHz to 133.6 MHz
Modulation
clock
cycle-cycle
jitter
Less than100 ps Less than 100 ps Less than 150 ps Less than 200 ps
Less than 150 ps
• Modulation rate : ± 0.5%, ± 1.5% (Center spread), − 1.0%, − 3.0% (Down spread)
• Equipped with oscillation circuit : Range of oscillation 8.3 MHz to 33.4 MHz
• Modulation clock output Duty : 40% to 60%
• Low current consumption by CMOS process : 5 mA (24 MHz : Typ-sample, no load)
• Power supply voltage : 3.3 V ± 0.3 V
• Operating temperature : − 40 °C to + 85 °C
• Package : SOP 8-pin
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