asm3p2812ag-08tt PulseCore Semiconductor, asm3p2812ag-08tt Datasheet

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asm3p2812ag-08tt

Manufacturer Part Number
asm3p2812ag-08tt
Description
Low Power Emi Reduction Ic
Manufacturer
PulseCore Semiconductor
Datasheet
April 2008
rev 1.6
Features
Product Description
The ASM3P28XX devices are versatile spread spectrum
frequency modulators designed specifically for a wide
range of input clock frequencies from 10MHz to 40MHz.
Refer Input / Output Frequency Range Selection Table.
The ASM3P28XX can generate an EMI reduced clock
from crystal, ceramic resonator, or system clock. The
ASM3P28XX-A and the ASM3P28XX-B offer various
combinations of spread options and percentage
deviations. Refer Frequency Deviation and Spread
Selection Table. These combinations include Down
1715 S. Bascom Ave Suite 200, Campbell, CA 95008 • Tel: 408-879-9077 • Fax: 408-879-9018
FCC approved method of EMI attenuation
Provides up to 15dB EMI reduction
Generates a 1x, 2x and 4x low EMI spread
spectrum clock of the input frequency
Optimized for input frequency range from
10MHz to 40 MHz
Internal loop filter minimizes external
components and board space
Selectable spread options:
8 frequency deviation selections:
Low inherent Cycle-to-Cycle Jitter
3.3V Operating Voltage
CMOS/TTL compatible inputs and outputs.
Pin-out compatible with Cypress CY25811,
CY25812 and CY25814
Commercial and Industrial temperature range
Available in 8-pin SOIC and TSSOP Packages
• 1x: ASM3P2811A/B
• 2x: ASM3P2812A/B
• 4x: ASM3P2814A/B
• Down Spread and Center Spread
• ±0.625% to -3.5%
Notice: The information in this document is subject to change without notice.
PulseCore Semiconductor Corporation
Low Power EMI Reduction IC
www.pulsecoresemi.com
and Center Spread, and percentage deviation range from
±0.625% to -3.5%.
The ASM3P28XX reduces electromagnetic interference
(EMI) at the clock source, allowing system wide reduction
of EMI of down stream clock and data dependent
signals. The ASM3P28XX 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 ASM3P28XX 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’.
The ASM3P28XX uses the most efficient and optimized
modulation profile approved by the FCC and is
implemented in a proprietary all-digital method.
Applications
The ASM3P28XX is targeted towards EMI management
for memory and LVDS interfaces in mobile graphic
chipsets and high-speed digital applications such as PC
peripheral devices, consumer electronics, and embedded
controller systems.
ASM3P2811A/B
ASM3P2812A/B
ASM3P2814A/B

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asm3p2812ag-08tt Summary of contents

Page 1

... Refer Frequency Deviation and Spread Selection Table. These combinations include Down PulseCore Semiconductor Corporation 1715 S. Bascom Ave Suite 200, Campbell, CA 95008 • Tel: 408-879-9077 • Fax: 408-879-9018 Notice: The information in this document is subject to change without notice. ...

Page 2

April 2008 rev 1.6 Block Diagram XIN /CLKIN Crystal Frequency Oscillator XOUT Feedback Pin Configuration XIN / CLKIN Pin Description Pin# Pin Name Type 1 XIN / CLKIN I 2 VSS P 3 D_C I 4 SRS I 5 ModOUT ...

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April 2008 rev 1.6 Input/Output Frequency Range Selection Table FRS (pin 6) ASM3P2811 (1x) Input Output (MHz) (MHz) 0 10-20 10-20 1 20-40 20-40 Output Frequency Deviation and Spread Selection Table D_C SRS Part Number (pin 3) (pin 4) 0 ...

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April 2008 rev 1.6 Operating Conditions Symbol VDD Voltage on any pin with respect to GND T Operating temperature A C Load Capacitance L C Input Capacitance IN DC Electrical Characteristics Symbol Parameter V Input low voltage IL V Input ...

Page 5

April 2008 rev 1.6 Package Information Symbol θ Note: Controlling dimensions are millimeters. SOIC: 0.074 grams unit weight. Notice: The information in this document is subject to ...

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April 2008 rev 1 Symbol Min A A1 0.002 A2 0.033 B 0.008 c 0.004 D 0.114 E 0.169 0.020 θ Note: Controlling dimensions are millimeters. TSSOP: 0.0325 grams unit weight. Notice: The information ...

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April 2008 rev 1.6 Ordering Codes Part Number Marking ASM3P2811AF-08SR 3P2811AFS ASM3P2811AF-08ST 3P2811AFS ASM3P2811AF-08TR 3P2811AFT ASM3P2811AF-08TT 3P2811AFT ASM3P2811BF-08SR 3P2811BFS ASM3P2811BF-08ST 3P2811BFS ASM3P2811BF-08TR 3P2811BFT ASM3P2811BF-08TT 3P2811BFT ASM3P2812AF-08SR 3P2812AFS ASM3P2812AF-08ST 3P2812AFS ASM3P2812AF-08TR 3P2812AFT ASM3P2812AF-08TT 3P2812AFT ASM3P2812BF-08SR 3P2812BFS ASM3P2812BF-08ST 3P2812BFS ASM3P2812BF-08TR 3P2812BFT ASM3P2812BF-08TT ...

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... ASM3P2811AG-08ST 3P2811AGS ASM3P2811AG-08TR 3P2811AGT ASM3P2811AG-08TT 3P2811AGT ASM3P2811BG-08SR 3P2811BGS ASM3P2811BG-08ST 3P2811BGS ASM3P2811BG-08TR 3P2811BGT ASM3P2811BG-08TT 3P2811BGT ASM3P2812AG-08SR 3P2812AGS ASM3P2812AG-08ST 3P2812AGS ASM3P2812AG-08TR 3P2812AGT ASM3P2812AG-08TT 3P2812AGT ASM3P2812BG-08SR 3P2812BGS ASM3P2812BG-08ST 3P2812BGS ASM3P2812BG-08TR 3P2812BGT ASM3P2812BG-08TT 3P2812BGT ASM3P2814AG-08SR 3P2814AGS ASM3P2814AG-08ST 3P2814AGS ASM3P2814AG-08TR 3P2814AGT ASM3P2814AG-08TT 3P2814AGT ASM3P2814BG-08SR 3P2814BGS ASM3P2814BG-08ST ...

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April 2008 rev 1.6 Ordering Codes (cont’d) Part Number Marking ASM3I2811AG-08TR 3I2811AGT ASM3I2811AG-08TT 3I2811AGT ASM3I2811BG-08SR 3I2811BGS ASM3I2811BG-08ST 3I2811BGS ASM3I2811BG-08TR 3I2811BGT ASM3I2811BG-08TT 3I2811BGT ASM3I2812AG-08SR 3I2812AGS ASM3I2812AG-08ST 3I2812AGS ASM3I2812AG-08TR 3I2812AGT ASM3I2812AG-08TT 3I2812AGT ASM3I2812BG-08SR 3I2812BGS ASM3I2812BG-08ST 3I2812BGS ASM3I2812BG-08TR 3I2812BGT ASM3I2812BG-08TT 3I2812BGT ASM3I2814AG-08SR 3I2814AGS ...

Page 10

... G = GREEN PACKAGE, LEAD FREE, and RoHS PART NUMBER X= Automotive (-40C to +125C Clock Generator 2 = Non PLL based 3 = EMI Reduction 4 = DDR support products 5 = STD Zero Delay Buffer PulseCore Semiconductor Mixed Signal Product Low Power EMI Reduction IC ASM3P2811A/B ASM3P2812A/B ASM3P2814A MSOP J=TSOT26 E = TQFP C=TDFN (2X2) COL ...

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... Copyright 2006 PulseCore Semiconductor Corporation. All rights reserved. Our logo and name are trademarks or registered trademarks of PulseCore Semiconductor. All other brand and product names may be the trademarks of their respective companies. PulseCore reserves the right to make changes to this document and its products at any time without notice. PulseCore assumes no responsibility for any errors that may appear in this document. The data contained herein represents PulseCore’ ...

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