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IMISM532

International Microcircuits
Part Number IMISM532
Manufacturer International Microcircuits
Description Low EMI Spectrum Spread Clock
Published Sep 2, 2005
Detailed Description +/+ FEATURES • • • • • • • • • • • • • YJGP VKOKPI KU ETKVKECN SM532 Low EMI Spectrum Spread Clock APPLICATIONS • •...
Datasheet PDF File IMISM532 PDF File

IMISM532
IMISM532

Overview
+/+ FEATURES • • • • • • • • • • • • • YJGP VKOKPI KU ETKVKECN SM532 Low EMI Spectrum Spread Clock APPLICATIONS • • • • • • • • Desktop/Laptop Computer Modems Scanners, Printers, Copiers, Fax Machines, MFP’s Disk and CD-ROM Drives Automotive and EmbeddedSystems Networking, LAN/WAN Digital Cameras, Games LCD displays Approved Product Reduces Systemic EMI.
Modulates external source clock.
3 - 5 Volt power supply.
14 to 120 MHz.
operating frequency range.
Output is multiplied or divided by 1, 2 or 4.
Digitally controlled modulation.
TTL/CMOS compatible outputs.
Fout modulation centered around reference.
Compliant with all major CISC, RISC and DSP processors.
Low short term jitter.
Synchronous output enable.
Power down mode for low current operation.
Available in 16 pin SOIC package.
BENEFITS • • • • • Time to Market Lower cost of compliance Programmable EMI reduction No degradation in Rise/Fall times Lower component and PCB layer count GENERAL DESCRIPTION The IMI SM532 is a Spectrum Spread Clock Modulator designed for the purpose of reducing the Electro- Magnetic Interference (EMI) found in today’s high speed digital systems.
The SM532 is well suited for a wide range of digital system applications that require a reduction of radiated energy.
This unwanted radiated energy is usually found in the odd harmonics of digital system clocks.
By modulating the frequency of the digital clock, measured EMI at the fundamental and harmonic frequencies is greatly reduced.
This reduction in radiated energy can significantly reduce the cost of complying with regulatory requirements and time to market, without degrading clock and timing signals.
The IMI SM532 is extremely versatile and flexible in that program control is available for each of the operating modes.
Program control is provided for Input Frequency, Output Frequency Multiplication, Output Bandwidth, Modulation ON/OFF and Fout state during Power Down Mode.
Depending on the range of operation, the output clock, Fout, ...


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