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參數(shù)資料
| 型號： | MB88R157PNF-G-JN-EFE1 |
| 廠商： | FUJITSU LTD |
| 元件分類： | 時鐘產(chǎn)生/分配 |
| 英文描述： | 134 MHz, OTHER CLOCK GENERATOR, PDSO8 |
| 封裝： | 5.05 X 3.90 MM, 1.75 MM HEIGHT, 1.27 MM PITCH, PLASTIC, SOP-8 |
| 文件頁數(shù)： | 1/24頁 |
| 文件大?。?/td> | 724K |
| 代理商： | MB88R157PNF-G-JN-EFE1 |
FUJITSU MICROELECTRONICS
DATA SHEET
Copyright2008-2009 FUJITSU MICROELECTRONICS LIMITED All rights reserved
2009.8
ASSP
Spread Spectrum Clock Generator
MB88R157
■ DESCRIPTION
MB88R157 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.
This product has a built-in non-volatile memory, so its frequency setting can memorize each system or application.
Also the product has a built-in oscillation stabilization circuit, so it is not necessary to use the external oscillation
stabilization capacitance.
■ FEATURES
Input frequency
: 10 MHz to 40 MHz
Output frequency
: 1 MHz to 134 MHz
Programmable of the parameter of N divider, M divider, K divider
(N divider : 11-bit, M divider : 12-bit, K divider : 7-bit)
Modulation rate
: no modulation,
±0.25%, ±0.5%, ±0.75%, ±1.0%, ±1.25%, ±1.5%, ±1.75%
Equipped with a crystal oscillation circuit
Built-in oscillation stabilization capacitance : 5 pF to 10 pF (0.039 pF step range)
Clock output Duty : 45
% to 55%
Clock Cycle-Cycle Jitter : Less than 100 ps (Output frequency is over 2 MHz)
Low power consumption by CMOS process 5.5 mA (24 MHz, Typ-sample, no load)
(Input frequency : 24 MHz, N divider parameter : 1000, M divider parameter : 1000, K divider parameter : 1)
Power supply voltage : 3.3 V
± 0.3 V
Operating temperature
20 °C to + 85 °C
Package : 8-pin plastic SOP
DS04-29132-3E
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