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MB88151

Spread Spectrum Clock Generator - Fujitsu Media Devices

MB88151 PDF File

Description

www.
DataSheet4U.
com FUJITSU SEMICONDUCTOR DATA SHEET DS04-29116-2E Spread Spectrum Clock Generator MB88151 ■ DESCRIPTION MB88151 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 • • • • • • Input frequency : 16.
6 MHz to 33.
4 MHz Multiplication rate : 1/2, 1, 2, 4 Output frequency : 8.
3 MHz to 16.
7 MHz, 16.
6 MHz to 33.
4 MHz, 33.
3 MHz to 66.
7 MHz, 66.
6 MHz to 133.
4 MHz Modulation rate : ± 0.
5%, ± 1.
5% (Center spread), − 1.
0%, − 3.
0% (Down spread) Equipped with oscillation circuit : Range of oscillation 16.
6 MHz to 33.
4 MHz Modulation clock output Duty : 40% to 60% (Continued) ■ PACKAGE 8-pin plastic SOP (FPT-8P-M02) MB88151 (Continued) • Modulation clock Cycle-Cycle Jitter MB88151-100, 200 : Less than 100 ps MB88151-400 : Less than 150 ps MB88151-500 : Less than 200 ps • 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 ■ PRODUCT LINEUP MB88151 has four kinds of multiplication type.
Product Input frequency range MB88151-100 MB88151-200 MB88151-400 MB88151-500 16.
6 MHz to 33.
4 MHz Multiplier ratio Multiplied by 1 Multiplied by 2 Multiplied by 4 Multiplied by 1/2 Output frequency range 16.
6 MHz to 33.
4 MHz 33.
3 MHz to 66.
7 MHz 66.
6 MHz to 133.
4 MHz 8.
3 MHz to 16.
7 MHz ■ PIN ASSIGNMENT TOP VIEW XIN 1 VSS 2 SEL0 3 SEL1 4 MB88151 8 XOUT 7 VDD 6 ENS 5 CKOUT FPT-8P-M02 ■ PIN DESCRIPTION Pin name XIN VSS SEL0 SEL1 CKOUT ENS VDD XOUT 2 I/O I ⎯ I I O I ⎯ O Pin no.
1 2 3 4 5 6 7 8 GND pin Modulation rate setting pin Modulation rate setting pin Modulated clock...

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