ASM3I2111BG-08ST datasheet, PDF

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ASM3I2111BG-08ST: DescriptionPeak EMI Reducing Solution; CategoryThe embedded processor and controller Microcontrollers and processors; File Size206KB，8 Pages; ManufacturerALSC [Alliance Semiconductor Corporation]; Environmental Compliance

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ASM3I2111BG-08ST Overview

Peak EMI Reducing Solution

ASM3I2111BG-08ST Parametric

Parameter Name	Attribute value
Is it Rohs certified?	conform to
Maker	ALSC [Alliance Semiconductor Corporation]
Parts packaging code	SOIC
package instruction	SOP, SOP8,.25
Contacts	8
Reach Compliance Code	unknow
ECCN code	EAR99
JESD-30 code	R-PDSO-G8
JESD-609 code	e3
length	4.9 mm
Number of terminals	8
Maximum operating temperature	85 °C
Minimum operating temperature	-40 °C
Maximum output clock frequency	66.6 MHz
Package body material	PLASTIC/EPOXY
encapsulated code	SOP
Encapsulate equivalent code	SOP8,.25
Package shape	RECTANGULAR
Package form	SMALL OUTLINE
Peak Reflow Temperature (Celsius)	250
power supply	3.3 V
Master clock/crystal nominal frequency	25 MHz
Certification status	Not Qualified
Maximum seat height	1.75 mm
Maximum slew rate	62 mA
Maximum supply voltage	3.6 V
Minimum supply voltage	3 V
Nominal supply voltage	3.3 V
surface mount	YES
technology	CMOS
Temperature level	INDUSTRIAL
Terminal surface	MATTE TIN
Terminal form	GULL WING
Terminal pitch	1.27 mm
Terminal location	DUAL
Maximum time at peak reflow temperature	40
width	3.91 mm
uPs/uCs/peripheral integrated circuit type	CLOCK GENERATOR, OTHER

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May 2005

rev 0.1

Peak EMI Reducing Solution

Features

Generates an EMI optimized clock at the output.

Input frequency: 25 MHz.

Frequency outputs:

60 MHz (unmodulated)

2 x 48 MHz (unmodulated)

66.6 MHz (modulated): -1.7% down spread

ASM3P2111B

allows significant system cost savings by reducing the

number of circuit board layers and shielding that are

required to pass EMI regulations. The ASM3P2111B

modulates the output of PLL in order to spread the

bandwidth of a synthesized clock, thereby decreasing the

peak amplitudes of its harmonics. This results in

significantly lower system EMI compared to the typical

narrow band signal produced by oscillators and most

clock generators. Lowering EMI by increasing a signal’s

bandwidth is called spread spectrum clock generation.

Modulation rate: 30 KHz.

Supply voltage range: 3.3V ± 0.3V.

Available in 8-pin SOIC Package.

Commercial and Industrial Temperature range.

RoHS Compliant

Applications

ASM3P2111B is targeted towards EMI management for

Product Description

The ASM3P2111B is a versatile spread spectrum

frequency

modulator

that

reduces

electromagnetic

interference (EMI) at the clock source. The ASM3P2111B

high speed digital applications such as PC peripheral

devices, consumer electronics and embedded controller

systems.

Block Diagram

XIN /CLKIN

XOUT

60 MHz

Crystal

Oscillator

PLL1

48 MHz_1

48 MHz_2

48 MHz_1

PLL2

66.6 MHz

Modulated

Alliance Semiconductor

2575 Augustine Drive

•

Santa Clara CA

•

Tel: 408-855-4900

•

Fax: 408-855-4999

•

www.alsc.com

ASM3I2111BG-08ST Related Products

	ASM3I2111BG-08ST	ASM3I2111BG-08SR	ASM3P2111BG-08SR	ASM3P2111B	ASM3P2111BG-08ST
Description	Peak EMI Reducing Solution	Peak EMI Reducing Solution	Peak EMI Reducing Solution	Peak EMI Reducing Solution	Peak EMI Reducing Solution
Is it Rohs certified?	conform to	conform to	conform to	-	conform to
Maker	ALSC [Alliance Semiconductor Corporation]	ALSC [Alliance Semiconductor Corporation]	ALSC [Alliance Semiconductor Corporation]	-	ALSC [Alliance Semiconductor Corporation]
Parts packaging code	SOIC	SOIC	SOIC	-	SOIC
package instruction	SOP, SOP8,.25	SOP, SOP8,.25	SOP, SOP8,.25	-	SOP, SOP8,.25
Contacts	8	8	8	-	8
Reach Compliance Code	unknow	unknow	unknow	-	unknow
ECCN code	EAR99	EAR99	EAR99	-	EAR99
JESD-30 code	R-PDSO-G8	R-PDSO-G8	R-PDSO-G8	-	R-PDSO-G8
JESD-609 code	e3	e3	e3	-	e3
length	4.9 mm	4.9 mm	4.9 mm	-	4.9 mm
Number of terminals	8	8	8	-	8
Maximum operating temperature	85 °C	85 °C	70 °C	-	70 °C
Maximum output clock frequency	66.6 MHz	66.6 MHz	66.6 MHz	-	66.6 MHz
Package body material	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	-	PLASTIC/EPOXY
encapsulated code	SOP	SOP	SOP	-	SOP
Encapsulate equivalent code	SOP8,.25	SOP8,.25	SOP8,.25	-	SOP8,.25
Package shape	RECTANGULAR	RECTANGULAR	RECTANGULAR	-	RECTANGULAR
Package form	SMALL OUTLINE	SMALL OUTLINE	SMALL OUTLINE	-	SMALL OUTLINE
Peak Reflow Temperature (Celsius)	250	250	250	-	250
power supply	3.3 V	3.3 V	3.3 V	-	3.3 V
Master clock/crystal nominal frequency	25 MHz	25 MHz	25 MHz	-	25 MHz
Certification status	Not Qualified	Not Qualified	Not Qualified	-	Not Qualified
Maximum seat height	1.75 mm	1.75 mm	1.75 mm	-	1.75 mm
Maximum slew rate	62 mA	62 mA	62 mA	-	62 mA
Maximum supply voltage	3.6 V	3.6 V	3.6 V	-	3.6 V
Minimum supply voltage	3 V	3 V	3 V	-	3 V
Nominal supply voltage	3.3 V	3.3 V	3.3 V	-	3.3 V
surface mount	YES	YES	YES	-	YES
technology	CMOS	CMOS	CMOS	-	CMOS
Temperature level	INDUSTRIAL	INDUSTRIAL	COMMERCIAL	-	COMMERCIAL
Terminal surface	MATTE TIN	MATTE TIN	MATTE TIN	-	MATTE TIN
Terminal form	GULL WING	GULL WING	GULL WING	-	GULL WING
Terminal pitch	1.27 mm	1.27 mm	1.27 mm	-	1.27 mm
Terminal location	DUAL	DUAL	DUAL	-	DUAL
Maximum time at peak reflow temperature	40	40	40	-	40
width	3.91 mm	3.91 mm	3.91 mm	-	3.91 mm
uPs/uCs/peripheral integrated circuit type	CLOCK GENERATOR, OTHER	CLOCK GENERATOR, OTHER	CLOCK GENERATOR, OTHER	-	CLOCK GENERATOR, OTHER

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