ASM3I1819N-08-TR datasheet, PDF

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ASM3I1819N-08-TR: DescriptionVideo Clock Generator, 40MHz, CMOS, PDSO8, 4.40 MM, TSSOP-8; CategoryThe embedded processor and controller Microcontrollers and processors; File Size354KB，7 Pages; ManufacturerPulseCore Semiconductor Corporation

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ASM3I1819N-08-TR Overview

Video Clock Generator, 40MHz, CMOS, PDSO8, 4.40 MM, TSSOP-8

ASM3I1819N-08-TR Parametric

Parameter Name	Attribute value
Maker	PulseCore Semiconductor Corporation
package instruction	4.40 MM, TSSOP-8
Reach Compliance Code	unknown
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	40 MHz
Package body material	PLASTIC/EPOXY
encapsulated code	TSSOP
Package shape	RECTANGULAR
Package form	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH
Master clock/crystal nominal frequency	40 MHz
Certification status	Not Qualified
Maximum seat height	1.1 mm
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 form	GULL WING
Terminal pitch	0.65 mm
Terminal location	DUAL
width	3 mm
uPs/uCs/peripheral integrated circuit type	CLOCK GENERATOR, VIDEO

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August 2005

rev 0.2

Low Power Mobile VGA EMI Reduction IC

Features

FCC approved method of EMI attenuation

Provides up to 15dB EMI reduction

Generates a low EMI spread spectrum clock

and a non-spread Reference Clock of the input

frequency

Optimized for frequency range from 20MHz to

40MHz

Internal loop filter minimizes external components

and board space

Down Spread Deviation: -1.25%

Low inherent Cycle-to-Cycle jitter

3.3V Operating Voltage

CMOS/TTL compatible inputs and outputs

Low power CMOS design

Supports notebook VGA and other LCD timing

controller applications

Power Down function for mobile application

Products are available for industrial temperature

range.

Available in 8 pin SOIC and TSSOP Packages

ASM3P1819N

The ASM3P1819N reduces electromagnetic interference

(EMI) at the clock source, allowing a system wide EMI

reduction for all the down stream clocks and data

dependent signals. The ASM3P1819N allows significant

system cost savings by reducing the number of circuit

board layers, ferrite beads, shielding, and other passive

components that are traditionally required to pass

EMI

regulations.

The ASM3P1819N modulates the output of a single PLL in

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

thereby decreasing the peak amplitude of its harmonics.

This result 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”. The ASM3P1819N

uses the most efficient and optimized modulation profile

approved by the FCC and is implemented by using a

proprietary all digital method

Applications

The ASM3P1819N is targeted towards EMI management

Functional Description

The

ASM3P1819N

versatile

spread

spectrum

frequency modulator designed specifically for a wide range

of input clock frequencies from 20 to 40MHz. The

ASM3P1819N can generate an EMI reduced clock from

crystal, ceramic resonator, or system clock.

for memory and LVDS interfaces in mobile graphic chipsets

and high-speed digital applications such as PC peripheral

devices, consumer electronics and embedded controller

system.

Block Diagram

PD#

VDD

XIN

Crystal

Oscillator

XOUT

Frequency

Divider

Feedback

Divider

Modulation

PLL

Phase

Detector

Loop

Filter

VCO

Output

Divider

REF

ModOUT

VSS

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.

ASM3I1819N-08-TR Related Products

	ASM3I1819N-08-TR	ASM3I1819N-08-TT	ASM3I1819N-08-ST	ASM3P1819N-08-SR	ASM3P1819N-08-ST	ASM3P1819N-08-TR	ASM3I1819N-08-SR	ASM3P1819N-08-TT
Description	Video Clock Generator, 40MHz, CMOS, PDSO8, 4.40 MM, TSSOP-8	Video Clock Generator, 40MHz, CMOS, PDSO8, 4.40 MM, TSSOP-8	Video Clock Generator, 40MHz, CMOS, PDSO8, 0.150 INCH, SOIC-8	Video Clock Generator, 40MHz, CMOS, PDSO8, 0.150 INCH, SOIC-8	Video Clock Generator, 40MHz, CMOS, PDSO8, 0.150 INCH, SOIC-8	Video Clock Generator, 40MHz, CMOS, PDSO8, 4.40 MM, TSSOP-8	Video Clock Generator, 40MHz, CMOS, PDSO8, 0.150 INCH, SOIC-8	Video Clock Generator, 40MHz, CMOS, PDSO8, 4.40 MM, TSSOP-8
package instruction	4.40 MM, TSSOP-8	4.40 MM, TSSOP-8	0.150 INCH, SOIC-8	0.150 INCH, SOIC-8	0.150 INCH, SOIC-8	4.40 MM, TSSOP-8	0.150 INCH, SOIC-8	4.40 MM, TSSOP-8
Reach Compliance Code	unknown	unknown	unknown	unknown	unknown	unknown	unknown	unknown
JESD-30 code	R-PDSO-G8	R-PDSO-G8	R-PDSO-G8	R-PDSO-G8	R-PDSO-G8	R-PDSO-G8	R-PDSO-G8	R-PDSO-G8
length	4.4 mm	4.4 mm	4.9 mm	4.9 mm	4.9 mm	4.4 mm	4.9 mm	4.4 mm
Number of terminals	8	8	8	8	8	8	8	8
Maximum operating temperature	85 °C	85 °C	85 °C	70 °C	70 °C	70 °C	85 °C	70 °C
Maximum output clock frequency	40 MHz	40 MHz	40 MHz	40 MHz	40 MHz	40 MHz	40 MHz	40 MHz
Package body material	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY
encapsulated code	TSSOP	TSSOP	SOP	SOP	SOP	TSSOP	SOP	TSSOP
Package shape	RECTANGULAR	RECTANGULAR	RECTANGULAR	RECTANGULAR	RECTANGULAR	RECTANGULAR	RECTANGULAR	RECTANGULAR
Package form	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	SMALL OUTLINE	SMALL OUTLINE	SMALL OUTLINE	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	SMALL OUTLINE	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH
Master clock/crystal nominal frequency	40 MHz	40 MHz	40 MHz	40 MHz	40 MHz	40 MHz	40 MHz	40 MHz
Certification status	Not Qualified	Not Qualified	Not Qualified	Not Qualified	Not Qualified	Not Qualified	Not Qualified	Not Qualified
Maximum seat height	1.1 mm	1.1 mm	1.75 mm	1.75 mm	1.75 mm	1.1 mm	1.75 mm	1.1 mm
Maximum supply voltage	3.6 V	3.6 V	3.6 V	3.6 V	3.6 V	3.6 V	3.6 V	3.6 V
Minimum supply voltage	3 V	3 V	3 V	3 V	3 V	3 V	3 V	3 V
Nominal supply voltage	3.3 V	3.3 V	3.3 V	3.3 V	3.3 V	3.3 V	3.3 V	3.3 V
surface mount	YES	YES	YES	YES	YES	YES	YES	YES
technology	CMOS	CMOS	CMOS	CMOS	CMOS	CMOS	CMOS	CMOS
Temperature level	INDUSTRIAL	INDUSTRIAL	INDUSTRIAL	COMMERCIAL	COMMERCIAL	COMMERCIAL	INDUSTRIAL	COMMERCIAL
Terminal form	GULL WING	GULL WING	GULL WING	GULL WING	GULL WING	GULL WING	GULL WING	GULL WING
Terminal pitch	0.65 mm	0.65 mm	1.27 mm	1.27 mm	1.27 mm	0.65 mm	1.27 mm	0.65 mm
Terminal location	DUAL	DUAL	DUAL	DUAL	DUAL	DUAL	DUAL	DUAL
width	3 mm	3 mm	3.91 mm	3.91 mm	3.91 mm	3 mm	3.91 mm	3 mm
uPs/uCs/peripheral integrated circuit type	CLOCK GENERATOR, VIDEO	CLOCK GENERATOR, VIDEO	CLOCK GENERATOR, VIDEO	CLOCK GENERATOR, VIDEO	CLOCK GENERATOR, VIDEO	CLOCK GENERATOR, VIDEO	CLOCK GENERATOR, VIDEO	CLOCK GENERATOR, VIDEO
Maker	PulseCore Semiconductor Corporation	-	PulseCore Semiconductor Corporation	PulseCore Semiconductor Corporation	PulseCore Semiconductor Corporation	PulseCore Semiconductor Corporation	PulseCore Semiconductor Corporation	PulseCore Semiconductor Corporation

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