A forum for the exchange of circuits, systems, and software for real-world signal processing DYNAMIC POWER MANAGEMENT OPTIMIZES PERFORMANCE vs. POWER OF BLACKFIN® DSPs (page 5) Detecting Fast RF Bursts Using Log Amps (page 8) Mirrors with Integrated Position-Sense Electronics for Optical Switching (page 3) Complete contents on page 3 Volume 36 2002, Part 2 a !54(/23CONTINUEDONPAGE %DITORS.OTES 7EAREPLEASEDTONOTETHEINTRODUCTION OF A NEW &ELLOW AT OUR 'ENERAL 4ECHNICAL#ONFERENCE&ELLOWAT!NALOG $EVICESREPRESENTSTHEHIGHESTLEVELOF ACHIEVEMENTTHATATECHNICALCONTRIBUTOR CAN ACHIEVE ON A PAR WIT H 6ICE 0RESIDENT 4HE CRITERIA FOR PROMOTION TO&ELLOWAREVERYDEMANDING&ELLOWS WILL HAVE EARNED UNIVERSAL RESPECT AND RECOGNITION FROM THE TECHNICAL COMMUNITY FOR UNUSUAL TALENT AND IDENTIlABLEINNOVATIONATTHESTATEOFTHEART4HEIRCREATIVETECHNICAL CONTRIBUTIONSINPRODUCTORPROCESSTECHNOLOGYORSOFTWAREWILLHAVE LEDTOCOMMERCIALSUCCESSWITHAMAJORIMPACTONTHECOMPANYSNET REVENUESANDEARNINGS !TTRIBUTES INCLUDE ROLES AS 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OHMFEEDBACKRESISTORISUSEDTOPREVENTTHE!$FROM RINGING !N OPTIONAL LOW PASS lLTER CONSISTING OF A OHM RESISTORANDN&CAPACITORLOWERSTHENOISEBANDWIDTHOFTHE OPAMPANDALSOSERVESASANANTIALIASINGlLTER & &IGURE SHOWS A COMPLETE BIT DATA ACQUISITION SYSTEM CONSISTINGOFAN!$!$#ANDAN!$OPAMPUSED AS A DRIVER AMPLIlER 5 4HE INPUT SIGNAL IS BUFFERED BY 5 WHICH IS OPERATED AS A LOW NOISE UNITYGAIN FOLLOWER ITS HIGH INPUT IMPEDANCE ALLOWS A MULTIPLEXER OR A PASSIVE lLTER TO BE USEDAHEADOFTHEOPAMP &IGURE 4($SECOND ANDTHIRDHARMONICSAND3&$2 VSFREQUENCY3&$2SCALEISATRIGHT 3OURCE!NALOG$IALOGUE !DIFFERENTIALBIT!$#DRIVERCIRCUIT 4HE !$ IS A BIT !$# THAT ACCEPTS AND PROCESSES DIFFERENTIAL INPUT VOLTAGES )TS REFERENCE INTERFACE AND POWER SUPPLY CONNECTIONS ARE ALL ESSENTIALLY THE SAME AS FOR THE SINGLE ENDED !$# AS SHOWN IN &IGURE 4HE USE OF A TRUE DIFFERENTIAL INPUT SIGNAL WILL ALWAYS RESULT IN THE LOWESTPOSSIBLESYSTEMNOISEANDTHEREFOREPROVIDETHEHIGHEST RESOLUTION(OWEVERWHENTHEINPUTSIGNALISDIFFERENTIALITIS 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