Generates optimized clocking signal output. Input frequency MHz. Frequ

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Generates optimized clocking signal output. Input frequency MHz. Frequ

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Peak Reducing Solution
Generates optimized clocking signal output. Input frequency MHz. Frequency outputs: (unmodulated) (unmodulated) 66.6 (modulated) -1.7% down spread
ASM3P2111A
ASM3P2111A allows significant system cost savings reducing number circuit board layers shielding that required pass regulations. ASM3P2111A modulates output order spread bandwidth synthesized clock, thereby decreasing peak amplitudes harmonics. This results significantly lower system compared typical narrow band signal produced oscillators most clock generators. Lowering increasing signal's bandwidth called spread spectrum clock generation.
Modulation rate: KHz. Supply voltage range: 3.3V 0.3V. Available 8-pin SOIC Package. Commercial Industrial Temperature range.
Applications
ASM3P2111A targeted towards management high speed digital applications such peripheral devices, consumer electronics embedded controller systems.
Product Description
ASM3P2111A versatile spread spectrum frequency modulator. ASM3P2111A reduces electromagnetic interference (EMI) clock source.
Block Diagram
/CLKIN XOUT
Crystal Oscillator PLL1 MHz_1
MHz_2 MHz_1 PLL2 66.6 Modulated
Alliance Semiconductor 2575 Augustine Drive Santa Clara Tel: 408-855-4900 Fax: 408-855-4999 www.alsc.com
March 2005
Configuration
ASM3P2111A
XIN/ CLKIN XOUT
66.6 MHz_1 MHz_2
ASM3P2111A
Description Name
CLKIN XOUT MHz_2 MHz_1 66.6
Type
Connection crystal Connection crystal
Description
Power supply analog digital blocks(+3.3V) Clock output-1 unmodulated Clock output-2 MHz_2 unmodulated Clock output-3 MHz_1 unmodulated Clock output-4 66.6 modulated Ground entire chip
Peak Reducing Solution
March 2005
Absolute Maximum Ratings Symbol
VDD, TSTG Storage temperature Operating temperature Max. Soldering Temperature sec) Junction Temperature Static Discharge Voltage JEDEC A114-B)
ASM3P2111A
Parameter
Voltage with respect Ground
Rating
-0.5 +7.0 +125
Unit
Note: These stress ratings only implied functional use. Exposure absolute maximum ratings prolonged periods time affect device reliability.
Operating Conditions Parameter
Supply Voltage Crystal Resonator Frequency Output Driver Load Capacitance
Symbol
FXIN
Condition Description
3.3V 0.3V
Unit
Peak Reducing Solution
March 2005
Electrical Characteristics Parameter
Overall Supply Current, Dynamic Supply Current, Static input pins High-Level Input Voltage Low-Level Input Voltage High-Level Input Current Low-Level Input Current (pull-up) High-Level Output Source Current Low-Level Output Sink Current Clock Outputs High-Level Output Source Current Low-Level Output Sink Current Output Impedance VO=2.5V VO=0.4V VO=0.5VDD; output driving high Vo=0.5VDD; output driving IxOH IxOL VDD=V (XIN) 3.3V, VO=0.4V VDD=3.3V, (XIN)=VO=2.5V VDD=3.3V VDD=3.3V VSS-0.3 IDDL VDD=3.3V, FCLK=25MHz, CL=15pF 3.3V, Clock Input
ASM3P2111A
Symbol
Conditions Description
Unit
VDD+0.3
Electrical Characteristics Parameter
Rise Time Fall Time Clock Duty Cycle
Symbol
Conditions/ Description
0.8V 2.0V; 15pF 2.0V 0.8V; 15pF Ratio pulse width measured from rising edge next falling edge 2.5V) clock period
Unit
Input clock frequency
Peak Reducing Solution
March 2005
Crystal Oscillator Circuit
ASM3P2111A
Crystal
Crystal Specifications Fundamental parallel resonant crystal
Nominal frequency Frequency tolerance Operating temperature range Storage temperature Load capacitance Shunt capacitance better 25°C -25°C +85°C -40°C +85°C 18pF maximum
Peak Reducing Solution
March 2005
Package Information 8-Pin SOIC Package
ASM3P2111A
Dimensions
Symbol
Inches
0.010 0.069 0.059 0.020 0.010 0.004 0.053 0.049 0.012 0.007
Millimeters
0.10 1.35 1.25 0.31 0.18 4.90 3.91 1.27 6.00 0.41 1.27 0.25 1.75 1.50 0.51 0.25
0.193 0.154 0.050 0.236 0.016 0.050
Peak Reducing Solution
March 2005
Ordering Codes Part number
ASM3P2111AF-08ST ASM3P2111AF-08SR ASM3I2111AF-08ST ASM3I2111AF-08SR
ASM3P2111A
MARKING
3P2111AF 3P2111AF 3I2111AF 3I2111AF
Package Configuration
8-pin SOIC TUBE, Free 8-pin SOIC TAPE REEL, Free 8-pin SOIC TUBE, Free 8-pin SOIC TAPE REEL, Free
Temperature Range
Commercial Commercial Industrial Industrial
Ordering Information
TSOT23 -6,T/R TSSOP, TUBE TSSOP, TVSOP, TUBE TVSOP, SOIC, TUBE SSOP, SSOP, TUBE SOIC, QFN, QFN, TRAY BGA, TRAY BGA, SOT-23,T/R QSOP, QSOP, TUBE
COUNT LEAD FREE PART PART NUMBER Automotive (-40C +125C) Industrial (-40C +85C) Commercial +70C)
reserved based Reduction support products Zero Delay Buffer
power management power management power management performance reserved
Alliance Semiconductor Mixed Signal Product
Licensed under patent #5,488,627, #6,646,463 #5,631,920.
Peak Reducing Solution
March 2005
ASM3P2111A
Alliance Semiconductor Corporation 2575, Augustine Drive, Santa Clara, 95054 Tel# 408-855-4900 Fax: 408-855-4999 www.alsc.com
Copyright Alliance Semiconductor Rights Reserved Part Number: ASM3P2111A Document Version: v1.3
Note: This product utilizes Patent 6,646,463 Impedance Emulator Patent issued Alliance Semiconductor, dated 11-11-2003
Copyright 2003 Alliance Semiconductor Corporation. rights reserved. three-point logo, name Intelliwatt trademarks registered trademarks Alliance. other brand product names trademarks their respective companies. Alliance reserves right make changes this document products time without notice. Alliance assumes responsibility errors that appear this document. data contained herein represents Alliance's best data and/or estimates time issuance. Alliance reserves right change correct this data time, without notice. product described herein under development, significant changes these specifications possible. information this product data sheet intended general descriptive information potential customers users, intended operate provide, guarantee warrantee user customer. Alliance does assume responsibility liability arising application product described herein, disclaims express implied warranties related sale and/or Alliance products including liability warranties related fitness particular purpose, merchantability, infringement intellectual property rights, except express agreed Alliance's Terms Conditions Sale (which available from Alliance). sales Alliance products made exclusively according Alliance's Terms Conditions Sale. purchase products from Alliance does convey license under patent rights, copyrights; mask works rights, trademarks, other intellectual property rights Alliance third parties. Alliance does authorize products critical components life-supporting systems where malfunction failure reasonably expected result significant injury user, inclusion Alliance products such life-supporting systems implies that manufacturer assumes risk such agrees indemnify Alliance against claims arising from such use.
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Generates optimized clocking signal output. Input frequency MHz. Frequ

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