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Issue #214 May 2008
Where Analog And Digital Collide
An Easy-To-Use LCR Meter
Third Place Microchip 2007 Design Contest
by Miguel Rusch
Start | LCR Meter | Back to Basics | The Big Picture | Creating a Wave | Analog Stages | Signal Conditioning | User Interface | Firmware | Take a Measurement | System Performance | Further Development | What's Next? | Sources & PDF
SOURCES & PDF
Editor’s note: To learn about the other projects that placed in the Microchip 16-Bit Embedded Control 2007 Design Contest, visit www.circuitcellar.com/microchip2007/.
Author’s note: I want to express my gratitude to Circuit Cellar and Microchip Technology for running the Microchip 16-Bit Embedded Control Design Contest. It was a fantastic experience.
Miguel Rusch lives in Melbourne, Australia, with his wife Katherine. He earned a Bachelor of Engineering (Mech) degree from Monash University in 2004. Currently, Miguel is working in the automotive industry, where he has several years of design experience. One day he hopes to convert his all-consuming electronics hobby into a real job in the embedded arena. You can contact Miguel at miguel@migdevelopments.com.
PROJECT FILES
To download code and additional files, go to ftp://ftp.circuitcellar.com/pub/Circuit_Cellar/2008/214.
RESOURCES
Agilent Technologies, Inc., “Impedance Measurement Handbook,” 2006, http://cp.literature.agilent.com/litweb/pdf/5950-3000.pdf.
Analog Devices, Inc., “A Technical Tutorial on Digital Signal Synthesis,” 1999, www.analog.com/UploadedFiles/Tutorials/450968421DDS_Tutorial_rev12-2-99.pdf.
Hitachi, “Application Note AN-029: Interfacing and set-up of Toshiba T6963C,” 2004, www.hitachi-displays-eu.com/doc/AN-029_Interfacing_and_set-up_for_Toshiba_T6963C.pdf.
K. Lacanette, “Application Note 779: A Basic Introduction to Filters—Active, Passive, and Switched-Capacitor,” National Semiconductor, Corp., 1991, www.national.com/an/AN/AN-779.pdf.
Texas Instruments, Inc., “Stability Analysis of Voltage Feedback Op-Amps Including Compensation Techniques Application Report,” SLOA020A, 2001, http://focus.ti.com/lit/an/sloa020a/sloa020a.pdf.
SOURCES
AD8629 Op-amp and AD9833 waveform generator
Analog Devices, Inc.
www.analog.com
FastLCD V1.2.0
FastAVR
www.fastavr.com
dsPIC30F4012 Microprocessor, FilterLab 2.0, MCP23S08 SPI, MCP41010 dGPIO, MCP6022 op-amp, MCP6S91 PGA, MPLAB C30 compiler, and PICkit 2 programmer
Microchip Technology, Inc.
www.microchip.com
dsPIC FD Lite
Momentum Data Systems, Inc.
www.mds.com
T6963C Chipset
Toshiba America, Inc.
www.toshiba.com
DG418L Analog switch
Vishay Intertechnology, Inc.
www.vishay.com
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