ASM3I2762AF-08TR datasheet, PDF

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ASM3I2762AF-08TR: DescriptionLow Power Peak EMI Reducing Solution; CategoryThe embedded processor and controller Microcontrollers and processors; File Size178KB，12 Pages; ManufacturerALSC [Alliance Semiconductor Corporation]; Environmental Compliance

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ASM3I2762AF-08TR Overview

Low Power Peak EMI Reducing Solution

ASM3I2762AF-08TR Parametric

Parameter Name	Attribute value
Is it Rohs certified?	conform to
Maker	ALSC [Alliance Semiconductor Corporation]
Parts packaging code	SOIC
package instruction	TSSOP, TSSOP8,.25
Contacts	8
Reach Compliance Code	unknow
ECCN code	EAR99
Other features	ALSO OPERATES AT 2.5V SUPPLY
JESD-30 code	R-PDSO-G8
length	4.4 mm
Number of terminals	8
Maximum operating temperature	85 °C
Minimum operating temperature	-40 °C
Maximum output clock frequency	13 MHz
Package body material	PLASTIC/EPOXY
encapsulated code	TSSOP
Encapsulate equivalent code	TSSOP8,.25
Package shape	RECTANGULAR
Package form	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH
Peak Reflow Temperature (Celsius)	NOT SPECIFIED
power supply	2.5/3.3 V
Master clock/crystal nominal frequency	13 MHz
Certification status	Not Qualified
Maximum seat height	1.1 mm
Maximum supply voltage	3.6 V
Minimum supply voltage	2.7 V
Nominal supply voltage	3.3 V
surface mount	YES
technology	CMOS
Temperature level	INDUSTRIAL
Terminal form	GULL WING
Terminal pitch	0.65 mm
Terminal location	DUAL
Maximum time at peak reflow temperature	NOT SPECIFIED
width	3 mm
uPs/uCs/peripheral integrated circuit type	CLOCK GENERATOR, OTHER

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September 2005

rev 1.6

Low Power Peak EMI Reducing Solution

Features

Generates an EMI optimized clock signal at the

output.

Integrated loop filter components.

Operates with a 3.3V /2.5V Supply.

Operating current less than 6mA.

Low power CMOS design.

Input frequency range: 6MHz to 12MHz for 2.5V

: 6MHz to 13MHz for 3.3V

Generates a 1X low EMI spread spectrum clock of

the input frequency.

Frequency deviation: -1.25% (Typ) @ 10MHz Input

Frequency

Available in 6-pin TSOT-23, 8-pin SOIC and 8-pin

TSSOP packages.

ASM3P2762A

The ASM3P2762A uses the most efficient and optimized

modulation profile approved by the FCC and is

implemented by using a proprietary all digital method.

The ASM3P2762A modulates the output of a single PLL

in order to “spread” the bandwidth of a synthesized clock,

and more importantly, decreases 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 frequency generators. Lowering

EMI by increasing a signal’s bandwidth is called ‘spread

spectrum clock generation’.

Applications

The ASM3P2762A is targeted towards all portable

devices with very low power requirements like MP3

players and digital still cameras.

Product Description

The ASM3P2762A is a versatile spread spectrum

frequency modulator designed specifically for a wide

range of clock frequencies. The ASM3P2762A reduces

electromagnetic interference (EMI) at the clock source,

allowing system wide reduction of EMI of

all clock

dependent signals. The ASM3P2762A allows significant

system cost savings by reducing the number of circuit

board layers ferrite beads, shielding that are traditionally

required to pass EMI regulations.

Key Specifications

Description

Supply voltages

Cycle-to-Cycle Jitter

Output Duty Cycle

Modulation Rate Equation

Frequency Deviation

Specification

= 3.3V /2.5V

200pS (Max)

45/55%

/256

-1.25% (Typ) @ 10MHz

Block Diagram

XIN

Crystal

Oscillator

Frequency

Divider

Feedback

Divider

Modulation

PLL

XOUT

Phase

Detector

Loop

Filter

VCO

Output

Divider

ModOUT

Alliance Semiconductor

2575 Augustine Drive

•

Santa Clara, CA

•

Tel: 408.855.4900

•

Fax: 408.855.4999

•

www.alsc.com

Notice: The information in this document is subject to change without notice.

ASM3I2762AF-08TR Related Products

	ASM3I2762AF-08TR	ASM3I2762A-06OR	ASM3I2762A-08ST	ASM3I2762AG-06OR	ASM3I2762AG-08SR	ASM3P2762A
Description	Low Power Peak EMI Reducing Solution	Low Power Peak EMI Reducing Solution	Low Power Peak EMI Reducing Solution	Low Power Peak EMI Reducing Solution	Low Power Peak EMI Reducing Solution	Low Power Peak EMI Reducing Solution
Is it Rohs certified?	conform to	incompatible	incompatible	conform to	conform to	-
Maker	ALSC [Alliance Semiconductor Corporation]	ALSC [Alliance Semiconductor Corporation]	ALSC [Alliance Semiconductor Corporation]	ALSC [Alliance Semiconductor Corporation]	ALSC [Alliance Semiconductor Corporation]	-
Parts packaging code	SOIC	SOT-23	SOIC	SOT-23	SOIC	-
package instruction	TSSOP, TSSOP8,.25	VSSOP, TSOP6,.11,37	SOP, SOP8,.25	VSSOP, TSOP6,.11,37	SOP, SOP8,.25	-
Contacts	8	6	8	6	8	-
Reach Compliance Code	unknow	unknow	unknow	unknow	unknow	-
ECCN code	EAR99	EAR99	EAR99	EAR99	EAR99	-
Other features	ALSO OPERATES AT 2.5V SUPPLY	ALSO OPERATES AT 2.5V SUPPLY	ALSO OPERATES AT 2.5V SUPPLY	ALSO OPERATES AT 2.5V SUPPLY	ALSO OPERATES AT 2.5V SUPPLY	-
JESD-30 code	R-PDSO-G8	R-PDSO-G6	R-PDSO-G8	R-PDSO-G6	R-PDSO-G8	-
length	4.4 mm	2.9 mm	4.9 mm	2.9 mm	4.9 mm	-
Number of terminals	8	6	8	6	8	-
Maximum operating temperature	85 °C	85 °C	85 °C	85 °C	85 °C	-
Minimum operating temperature	-40 °C	-40 °C	-40 °C	-40 °C	-40 °C	-
Maximum output clock frequency	13 MHz	13 MHz	13 MHz	13 MHz	13 MHz	-
Package body material	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	-
encapsulated code	TSSOP	VSSOP	SOP	VSSOP	SOP	-
Encapsulate equivalent code	TSSOP8,.25	TSOP6,.11,37	SOP8,.25	TSOP6,.11,37	SOP8,.25	-
Package shape	RECTANGULAR	RECTANGULAR	RECTANGULAR	RECTANGULAR	RECTANGULAR	-
Package form	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	SMALL OUTLINE, VERY THIN PROFILE, SHRINK PITCH	SMALL OUTLINE	SMALL OUTLINE, VERY THIN PROFILE, SHRINK PITCH	SMALL OUTLINE	-
power supply	2.5/3.3 V	2.5/3.3 V	2.5/3.3 V	2.5/3.3 V	2.5/3.3 V	-
Master clock/crystal nominal frequency	13 MHz	13 MHz	13 MHz	13 MHz	13 MHz	-
Certification status	Not Qualified	Not Qualified	Not Qualified	Not Qualified	Not Qualified	-
Maximum seat height	1.1 mm	1 mm	1.75 mm	1 mm	1.75 mm	-
Maximum supply voltage	3.6 V	3.6 V	3.6 V	3.6 V	3.6 V	-
Minimum supply voltage	2.7 V	2.7 V	2.7 V	2.7 V	2.7 V	-
Nominal supply voltage	3.3 V	3.3 V	3.3 V	3.3 V	3.3 V	-
surface mount	YES	YES	YES	YES	YES	-
technology	CMOS	CMOS	CMOS	CMOS	CMOS	-
Temperature level	INDUSTRIAL	INDUSTRIAL	INDUSTRIAL	INDUSTRIAL	INDUSTRIAL	-
Terminal form	GULL WING	GULL WING	GULL WING	GULL WING	GULL WING	-
Terminal pitch	0.65 mm	0.95 mm	1.27 mm	0.95 mm	1.27 mm	-
Terminal location	DUAL	DUAL	DUAL	DUAL	DUAL	-
width	3 mm	1.6 mm	3.91 mm	1.6 mm	3.91 mm	-
uPs/uCs/peripheral integrated circuit type	CLOCK GENERATOR, OTHER	CLOCK GENERATOR, OTHER	CLOCK GENERATOR, OTHER	CLOCK GENERATOR, OTHER	CLOCK GENERATOR, OTHER	-

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