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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 radi-

ation 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 :

−

°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

SEL0 3

SEL1 4

MB88151

8 XOUT

7 V

6 ENS

5 CKOUT

FPT-8P-M02

■

PIN DESCRIPTION

Pin name

XIN

SEL0

SEL1

CKOUT

ENS

XOUT

I/O

⎯

Pin no.

GND pin

Modulation rate setting pin

Modulated clock output pin

Modulation enable setting pin (with pull-up resistance)

Power supply voltage pin

Resonator connection pin

Description

Resonator connection pin/clock input pin

MB88151

■

I/O CIRCUIT TYPE

Circuit type

Remarks

• CMOS hysteresis input

SEL0

SEL1

• CMOS hysteresis input with pull-up

resistor 50 kΩ (Typ)

50 kΩ

ENS

• CMOS output

• I

4 mA

CKOUT

Note : For XIN and XOUT pins, see “■OSCILLATION CIRCUIT”.

MB88151

■

HANDLING DEVICES

Preventing Latchup

A latchup can occur if, on this device, (a) a voltage higher than V

or a voltage lower than V

is applied to an

input or output pin or (b) a voltage higher than the rating is applied between V

and V

. The latchup, if it occurs,

significantly increases the power supply current and may cause thermal destruction of an element. When you

use this device, be very careful not to exceed the maximum rating.

Handling unused pins

Do not leave an unused input pin open, since it may cause a malfunction. Handle by, using a pull-up or

pull-down resistor.

Unused output pin should be opened.

The attention when the external clock is used

Input the clock to XIN pin, and XOUT pin should be opened when you use the external clock.

Please pay attention so that an overshoot and an undershoot do not occur to an input clock of XIN pin.

Power supply pins

Please design connecting the power supply pin of this device by as low impedance as possible from the current

supply source.

We recommend connecting electrolytic capacitor (about 10

µF)

and the ceramic capacitor (about 0.01

µF)

parallel between V

and V

near the device, as a bypass capacitor.

Oscillation circuit

Noise near the XIN and XOUT pins may cause the device to malfunction. Design printed circuit boards so that

electric wiring of XIN or XOUT pin and the resonator do not intersect other wiring.

Design the printed circuit board that surrounds the XIN and XOUT pins with ground.

MB88151

■

BLOCK DIAGRAM

SEL1

Modulation rate

setting

Modulation rate

setting

SEL0

PLL block

ENS

Modulation enable setting

Clock output

CKOUT

XOUT

Reference clock

XIN

1 MΩ

−

Phase

compare

Charge

pump

V/I

conversion

IDAC

ICO

Reference clock

−

Loop filter

Modulation clock

output

−

Modulation logic

Modulation

rate setting/

Modulation

enable setting

MB88151 PLL block

A glitchless IDAC (current output D/A converter) provides precise modulation,

thereby dramatically reducing EMI.

参数对比

与MB88151PNF-G-500-JNE1相近的元器件有：MB88151PNF-G-100-JNE1、MB88151PNF-G-100-JN-ERE1、MB88151PNF-G-100-JN-EFE1、MB88151PNF-G-200-JN-ERE1、MB88151PNF-G-400-JN-EFE1、MB88151PNF-G-400-JN-ERE1。描述及对比如下：

型号	MB88151PNF-G-500-JNE1	MB88151PNF-G-100-JNE1	MB88151PNF-G-100-JN-ERE1	MB88151PNF-G-100-JN-EFE1	MB88151PNF-G-200-JN-ERE1	MB88151PNF-G-400-JN-EFE1	MB88151PNF-G-400-JN-ERE1
描述	Clock Generator, 16.7MHz, CMOS, PDSO8, PLASTIC, SOP-8	Clock Generator, 33.4MHz, CMOS, PDSO8, PLASTIC, SOP-8	Clock Generator, 33.4MHz, CMOS, PDSO8, PLASTIC, SOP-8	Clock Generator, 33.4MHz, CMOS, PDSO8, PLASTIC, SOP-8	Clock Generator, 66.7MHz, CMOS, PDSO8, PLASTIC, SOP-8	Clock Generator, 133.4MHz, CMOS, PDSO8, PLASTIC, SOP-8	Clock Generator, 133.4MHz, CMOS, PDSO8, PLASTIC, SOP-8
是否Rohs认证	符合	符合	符合	符合	符合	符合	符合
厂商名称	FUJITSU(富士通)	FUJITSU(富士通)	FUJITSU(富士通)	FUJITSU(富士通)	FUJITSU(富士通)	FUJITSU(富士通)	FUJITSU(富士通)
包装说明	SOP, SOP8,.25	SOP, SOP8,.25	SOP, SOP8,.25	SOP, SOP8,.25	PLASTIC, SOP-8	PLASTIC, SOP-8	PLASTIC, SOP-8
Reach Compliance Code	compliant	compliant	compliant	compliant	compliant	compliant	compli
ECCN代码	EAR99	EAR99	EAR99	EAR99	EAR99	EAR99	EAR99
JESD-30 代码	R-PDSO-G8	R-PDSO-G8	R-PDSO-G8	R-PDSO-G8	R-PDSO-G8	R-PDSO-G8	R-PDSO-G8
长度	5.05 mm	5.05 mm	5.05 mm	5.05 mm	5.05 mm	5.05 mm	5.05 mm
端子数量	8	8	8	8	8	8	8
最高工作温度	85 °C	85 °C	85 °C	85 °C	85 °C	85 °C	85 °C
最低工作温度	-40 °C	-40 °C	-40 °C	-40 °C	-40 °C	-40 °C	-40 °C
最大输出时钟频率	16.7 MHz	33.4 MHz	33.4 MHz	33.4 MHz	66.7 MHz	133.4 MHz	133.4 MHz
封装主体材料	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY
封装代码	SOP	SOP	SOP	SOP	SOP	SOP	SOP
封装等效代码	SOP8,.25	SOP8,.25	SOP8,.25	SOP8,.25	SOP8,.25	SOP8,.25	SOP8,.25
封装形状	RECTANGULAR	RECTANGULAR	RECTANGULAR	RECTANGULAR	RECTANGULAR	RECTANGULAR	RECTANGULAR
封装形式	SMALL OUTLINE	SMALL OUTLINE	SMALL OUTLINE	SMALL OUTLINE	SMALL OUTLINE	SMALL OUTLINE	SMALL OUTLINE
峰值回流温度（摄氏度）	NOT SPECIFIED	NOT SPECIFIED	NOT SPECIFIED	NOT SPECIFIED	NOT SPECIFIED	NOT SPECIFIED	NOT SPECIFIED
电源	3.3 V	3.3 V	3.3 V	3.3 V	3.3 V	3.3 V	3.3 V
主时钟/晶体标称频率	33.4 MHz	33.4 MHz	33.4 MHz	33.4 MHz	33.4 MHz	33.4 MHz	33.4 MHz
认证状态	Not Qualified	Not Qualified	Not Qualified	Not Qualified	Not Qualified	Not Qualified	Not Qualified
座面最大高度	1.75 mm	1.75 mm	1.75 mm	1.75 mm	1.75 mm	1.75 mm	1.75 mm
最大压摆率	7 mA	7 mA	7 mA	7 mA	7 mA	7 mA	7 mA
最大供电电压	3.6 V	3.6 V	3.6 V	3.6 V	3.6 V	3.6 V	3.6 V
最小供电电压	3 V	3 V	3 V	3 V	3 V	3 V	3 V
标称供电电压	3.3 V	3.3 V	3.3 V	3.3 V	3.3 V	3.3 V	3.3 V
表面贴装	YES	YES	YES	YES	YES	YES	YES
技术	CMOS	CMOS	CMOS	CMOS	CMOS	CMOS	CMOS
温度等级	INDUSTRIAL	INDUSTRIAL	INDUSTRIAL	INDUSTRIAL	INDUSTRIAL	INDUSTRIAL	INDUSTRIAL
端子形式	GULL WING	GULL WING	GULL WING	GULL WING	GULL WING	GULL WING	GULL WING
端子节距	1.27 mm	1.27 mm	1.27 mm	1.27 mm	1.27 mm	1.27 mm	1.27 mm
端子位置	DUAL	DUAL	DUAL	DUAL	DUAL	DUAL	DUAL
处于峰值回流温度下的最长时间	NOT SPECIFIED	NOT SPECIFIED	NOT SPECIFIED	NOT SPECIFIED	NOT SPECIFIED	NOT SPECIFIED	NOT SPECIFIED
宽度	3.9 mm	3.9 mm	3.9 mm	3.9 mm	3.9 mm	3.9 mm	3.9 mm
uPs/uCs/外围集成电路类型	CLOCK GENERATOR, OTHER	CLOCK GENERATOR, OTHER	CLOCK GENERATOR, OTHER	CLOCK GENERATOR, OTHER	CLOCK GENERATOR, OTHER	CLOCK GENERATOR, OTHER	CLOCK GENERATOR, OTHER