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MB88154PNF-G-113-JN-EFE1中文资料

DS04-29115-2E

FUJITSU SEMICONDUCTOR

DATA SHEET

Spread Spectrum Clock Generator

MB88154

■DESCRIPTION

MB88154 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 input frequency as Middle Centered and down spread which modulates so as not to exceed input frequency.

■FEATURE

?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 M 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 : T yp-sample, no load)?Power supply voltage : 3.3 V ± 0.3 V

?Operating temperature : ? 40 °C to +85 °C ?Package : SOP 8-pin

MB88154

2■PRODUCT LINEUP

MB88154 has two kinds of input frequency, and two kinds of modulation type (center/down spread), total four line-ups.

■PIN DESCRIPTION

Product Input/Output frequency Modulation type

MB88154-10233 MHz to 67 MHz

Down

MB88154-10316.6 MHz to 40 MHz

MB88154-11233 MHz to 67 MHz

Center

MB88154-11316.6 MHz to 40 MHz

Pin name I/O Pin no.Description

CKOUT O1Modulated clock output pin

V DD?2Power supply voltage pin

V SS?3GND pin

XIN I4Crystal resonator connection pin/clock input pin

XOUT O5Crystal resonator connection pin

SEL0I6Modulation rate setting pin

REFOUT O7Non-modulated clock output pin

SEL1I8Modulation rate setting pin

MB88154■I/O CIRCUIT TYPE

Note : For XIN and XOUT pins, see “■OSCILLA TION CIRCUIT”

MB88154

4■HANDLING DEVICES

Preventing Latchup

A latchup can occur if, on this device, (a) a voltage higher than V DD or a voltage lower than V SS is applied to an

input or output pin or (b) a voltage higher than the rating is applied between V DD and V SS. 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) in parallel between V SS and V DD 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.

MB88154

6■PIN SETTING

SEL 0, SEL 1 Modulation rate setting

Notes : ?The modulation rate can be changed at the level of the pin. Spectrum does not spread when “H” level is set to SEL0 and SEL1 pin. The clock with low jitter can be obtained.

?When changing the modulation rate setting, the stabilization wait time for the modulation clock is

required. The stabilization wait time for the modulation clock take the maximum value of “■ ELECTRICAL

CHARACTERISTICS ? AC Characteristics Lock-Up time”.

? Center spread

? Down spread

SEL1SEL0

modulation rate

MB88154-102, MB88154-103MB88154-112, MB88154-113

Down spread Center spread L L? 1.0%± 0.5%

L H? 2.0%± 1.0%

H L? 3.0%± 1.5%

H H No spread No spread

MB88154

■ABSOLUTE MAXIMUM RATINGS

* : The parameter is based on V SS = 0.0 V .

WARNING:Semiconductor devices can be permanently damaged by application of stress (voltage, current,

temperature, etc.) in excess of absolute maximum ratings. Do not exceed these ratings.

Parameter

Symbol Rating

Unit Min Max Power supply voltage*V DD ? 0.5 + 4.0V Input voltage*V I V SS ? 0.5V DD + 0.5V Output voltage*V O V SS ? 0.5V DD + 0.5V Storage temperature T ST ? 55 + 125 °C Operation junction temperature T J ? 40 +

125 °C Output current I O ? 14 + 14

mA Overshoot V IOVER ?

V DD + 1.0 (t OVER ≤ 50 ns)

V Undershoot

V IUNDER

V SS ? 1.0 (t UNDER ≤ 50 ns)

MB88154

8■RECOMMENDED OPERATING CONDITIONS

(V SS= 0.0 V) WARNING:The recommended operating conditions are required in order to ensure the normal operation of the semiconductor device. All of the device’s electrical characteristics are warranted when the device is

operated within these ranges.

Always use semiconductor devices within their recommended operating condition ranges. Operation

outside these ranges may adversely affect reliability and could result in device failure.

No warranty is made with respect to uses, operating conditions, or combinations not represented on

the data sheet. Users considering application outside the listed conditions are advised to contact their

FUJITSU representatives beforehand.

Parameter Symbol Pin Conditions

Value

Unit

Min Typ Max

Power supply voltage V DD V DD? 3.0 3.3 3.6V “H” level input voltage V IH XIN,

SEL0,

SEL1

?V DD

× 0.80?V DD+ 0.3V “L” level input voltage V IL?V SS?V DD× 0.20V Input clock duty cycle t DCI XIN

16.6 MHz to

67 MHz

405060% Operating temperature Ta??? 40?+ 85°C

MB88154

■ELECTRICAL CHARACTERISTICS

?DC Characteristics

(T a = ?40 °C to + 85 °C, V DD = 3.3 V ± 0.3 V , V SS = 0.0 V)

?AC Characteristics

(T a = ?40 °C to + 85 °C, V DD = 3.3 V ± 0.3 V , V SS = 0.0 V)

* : Duty of the REFOUT output is guaranteed only for the following A and B because it depends on t DCI of input clock duty.

A. Resonator : When resonator is connected with XIN and XOUT and oscillates normally.

B. External clock input : The input level is Full - swing (V SS ? V DD ).

Parameter

Symbol Pin Conditions Value

Unit Min Typ Max Power supply current

I CC V DD

no load capacitance at

24 MHz output

? 5.07.0mA Output voltage

V OH

CKOUT, REFOUT “H” level output I OH = ? 3 mA V DD ? 0.5?V DD V V OL

“L” level output I OL = 3 mA V SS ?0.4V Output impedance Z O CKOUT, REFOUT 16.6 MHz to 67 MHz ?70??Input capacitance

C IN

XIN, SEL0, SEL1

Ta = + 25 °C, V DD = V I = 0.0 V, f = 1 MHz

Parameter

Symbol

Pin Conditions Value

Unit Min Typ Max Oscillation frequency f x XIN, XOUT Fundamental oscillation 16.6?40MHz 3rd over-tone oscillation 40?48Input frequency f in XIN MB88154-103/11316.6?40MHz MB88154-102/11233?67Output frequency f OUT CKOUT, REFOUT

MB88154-103/11316.6?40MHz MB88154-102/112

33?67Output slew rate SR CKOUT, REFOUT 0.4 V to 2.4 V

load capacitance 15 pF 0.3? 2.0V/ns Output clock duty cycle t DCC CKOUT 1.5 V 40?60%t DCR REFOUT 1.5 V t DCI ? 10*?t DCI + 10*%Modulation frequency f MOD CKOUT ??12.5?kHz Lock-Up time t LK CKOUT ?

?25ms Cycle-cycle jitter

t JC

CKOUT

No load capacitance,

Ta = +25 °C, V DD = 3.3 V, Standard deviation σ

100

MB88154

DCC DCR b a

in in

JC n n + 1

MB88154

If the setting pin is fixed at the “H” or “L” level, the maximum time after the power is turned on until the set clock signal is output from CKOUT pin is (the stabilization wait time of input clock to XIN pin) + (the lock-up time “t LK”). For the input clock stabilization time, check the characteristics of the resonator or oscillator used.

Note : When the pin setting is changed, the CKOUT pin output clock stabilization time is required. Until the output clock signal becomes stable, the output frequency, output clock duty cycle, modulation period, and cycle-cycle jitter cannot be guaranteed. It is therefore advisable to perform processing such as cancelling a reset of the device at the succeeding stage after the lock-up time.

MB88154

■OSCILLATION CIRCUIT

The left side of figures below shows the connection example about general resonator. The oscillation circuit has the built-in feedback resistance (1 M?) . The value of capacity (C1 and C2) is required adjusting to the most suitable value of an individual resonator.

The right side of figures below shows the example of connecting for the 3rd over-tone resonator. The value of capacity (C1, C2 and C3) and inductance (L1) is needed adjusting to the most suitable value of an individual resonator. The most suitable value is different by individual resonator. Please refer to the resonator manufacturer which use for the most suitable value. When an external clock is used (the resonator is not used) , input the

MB88154

■EXAMPLE CHARACTERISTICS

The condition of the examples of the characteristic is shown as follows: Input frequency = 20 MHz (Output frequency = 20 MHz : Using MB88154-113), Power - supply voltage = 3.3 V, None load capacity.

Modulation rate =± 1.5% (center spread)

Spectrum analyzer HP4396B is connected with CKOUT. The result of the measurement with RBW = 1 kHz (A TT

MB88154

16■ORDERING INFORMATION

Part number Input/Output frequency

Modulation

type

Package Remarks MB88154PNF-G-102-JNE1

MB88154PNF-G-103-JNE1

MB88154PNF-G-112-JNE1

MB88154PNF-G-113-JNE1

33 MHz to 67 MHz

16.6 MHz to 40 MHz

33 MHz to 67 MHz

16.6 MHz to 40 MHz

Down

Center

8-pin plastic SOP

(FPT-8P-M02)

MB88154PNF-G-102-JN-EFE1

MB88154PNF-G-103-JN-EFE1

MB88154PNF-G-112-JN-EFE1

MB88154PNF-G-113-JN-EFE1

33 MHz to 67 MHz

16.6 MHz to 40 MHz

33 MHz to 67 MHz

16.6 MHz to 40 MHz

Down

Center

8-pin plastic SOP

(FPT-8P-M02)

Emboss taping

(EF type)

MB88154PNF-G-102-JN-ERE1

MB88154PNF-G-103-JN-ERE1

MB88154PNF-G-112-JN-ERE1

MB88154PNF-G-113-JN-ERE1

33 MHz to 67 MHz

16.6 MHz to 40 MHz

33 MHz to 67 MHz

16.6 MHz to 40 MHz

Down

Center

8-pin plastic SOP

(FPT-8P-M02)

Emboss taping

(ER type)

MB88154■PACKAGE DIMENSION

MB88154

FUJITSU LIMITED

The contents of this document are subject to change without notice. Customers are advised to consult with FUJITSU sales representatives before ordering.

The information, such as descriptions of function and application circuit examples, in this document are presented solely for the purpose of reference to show examples of operations and uses of Fujitsu semiconductor device; Fujitsu does not warrant proper operation of the device with respect to use based on such information. When you develop equipment incorporating the device based on such information, you must assume any responsibility arising out of such use of the information. Fujitsu assumes no liability for any damages whatsoever arising out of the use of the information.

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F0502

?2005 FUJITSU LIMITED Printed in Japan