MB88154A データシートの表示（PDF） - Cypress Semiconductor

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MB88154A

Spread Spectrum Clock Generator

Cypress Semiconductor 

MB88154A

Spread Spectrum Clock Generator

MB88154A 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 input frequency as Middle Centered and down spread which modulates so as not to exceed input

frequency.

Features

■ Input frequency : 16.6 MHz to 67 MHz

■ Output frequency: 16.6 MHz to 67 MHz (One time input frequency)

■ Modulation rate can select from ± 0.5%, ± 1.0%, ± 1.5% or − 1.0%, − 2.0%, − 3.0%. (For center spread / down spread.)

■ Equipped with crystal oscillation circuit: Range of oscillation 16.6 MHz to 48 MHz

■ The external clock can be input: 16.6 MHz to 67 MHz

■ Modulation clock output duty : 40% to 60%

■ Modulation clock cycle-cycle jitter : Less than 100 ps

■ Low current consumption by CMOS process : 5.0 mA (24 MHz : Typ-sample, no load)

■ Power supply voltage : 3.3 V ± 0.3 V

■ Operating temperature : − 40 °C to +85 °C

■ Package : SOP 8-pin

Cypress Semiconductor Corporation • 198 Champion Court

Document Number: 002-08252 Rev. *B

• San Jose, CA 95134-1709 • 408-943-2600

Revised December 12, 2017

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