Week 14b Lecture 25 Dec 1 2005 Example Applications 1 Class D Audio Amplifier phasors opamp MOSFET 2 Atomic Force Microscope EE42 100 Fall 2005 Prof Fearing 1 Traditional Linear Amplifier www irf com product info audio classdtutorial pdf EE42 100 Fall 2005 Prof Fearing 2 current Example Vcc 25V load 1 ohms IXYS 24N50 EE42 100 Fall 2005 Prof Fearing 3 EE42 100 Fall 2005 Prof Fearing 4 How Pulse Width Modulation Works http www extron com technology archive asp id ts122001 EE42 100 Fall 2005 Prof Fearing 5 How a Triangle Output Oscillator Works relaxation oscillator http users ece gatech edu mleach ece4435 f01 ClassD2 pdf V1 vo V1 vo vT EE42 100 Fall 2005 Prof Fearing 6 Output Stage 50V VL Vin 50V H EE42 100 Fall 2005 Prof Fearing 7 Whole Class D amplifier EE42 100 Fall 2005 Prof Fearing 8 Integrator and Input Circuitry feedback EE42 100 Fall 2005 Prof Fearing 9 Quantize and Gate Drive EE42 100 Fall 2005 Prof Fearing 10 Output Section Gate Driver EE42 100 Fall 2005 Prof Fearing 11 Class D Amplifier Summary Review Concepts push pull output load line compare to CMOS output diode limiter op amp integrator 1 bit quantizer comparator protection logic push pull output load line compare to CMOS output low pass filter EE42 100 Fall 2005 Prof Fearing 12 2 Example Micromechatronic System Atomic Force Microscope http stm2 nrl navy mil how afm how afm html EE42 100 Fall 2005 Prof Fearing 13 EE42 100 Fall 2005 Prof Fearing 14 http stm2 nrl navy mil how afm how afm html EE42 100 Fall 2005 Prof Fearing 15 Example Application Atomic Force Microscopy Data Storage Target density 1 terabit sq in http www zurich ibm com st storage millipede html EE42 100 Fall 2005 Prof Fearing 16 Example Application Atomic Force Microscopy Data Storage Target density 1 terabit sq in thermal actuation readout http www zurich ibm com st storage millipede html EE42 100 Fall 2005 Prof Fearing 17
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