EDNE June 2012 - (Page 4)

VoICe oF tHe enGIneer contents june12 to on, go scripti newal, ee sub /re your fr urope.com e and For dn-e y nam www.e your famil r number enter (the reade ) and e ail ID cod on our em subquoted t the online . ou fill on form scripti RENEW NOW d e pa r t m e n t s & Columns 9 EDN.comment: Life in the fast lane 18 Test & Measurement World: Bridge software and hardware to accelerate SOC validation by Brad Quinton, Tektronix Controller ICs take multitouch screens beyond smartphones 32 As multitouch touchscreens move beyond smartphones and tablets into automotive, medical, and instrumentation applications, their features evolve to fit lower prices and varying form factors. by Margery Conner, Senior Technical Editor Pico-projector design uses color LEDs 41 An LED light source uses a flexible chip and package platform for color-sequential embedded pico projection. by Francis Nguyen and Stefan Morgott, Osram Opto Semiconductors 31 Baker’s Best: EMI problems? Part three: strength of EMI-radiated signals 50 Mechatronics in design: The significance of poles and zeros 52 Teardown: What’s inside the Samsung 40W-replacement-LED light? 60 Tales from the cube: Pulp packs a punch Test-driven development for embedded C: Why debug? Test-driven development helps you improve schedule predictability and product quality by eliminating bugs before they make the bug list. by James W Grenning, Renaissance Software Consulting Digital isolation in smart energy metering applications In applications such as smart energy meters that require isolation, digital isolators with isolated power technology combined with shunt resistors offer a solution. by Petre Minciunescu and Brian Kennedy, Analog Devices 26 46 produCt roundup 58 Data conversion; Embedded quad-cores Cover image: ThinkSToCk/giULia Fini-gULoTTa DesigniDeas 53 Convert 1 to 5V signal to 4- to 20-mA output 5V 1 nF GP2D120 100 F + VS ≃50 + – 33k 100 nF 500 56k VIN=0 TO 1V DC 2.2k 3 2 5 8 MHz EXTAL PC0-7 8 D0-7 6 4 AD654 1 7 8 10k MC68HC11 T PA0 XTAL PB7 PB6 PB5 LCD E RS R/W 54 Linearize optical distance sensors with a voltage-to-frequency converter 56 RC-timed shutoff function uses op amp and momentary switch 57 Use an integrator instead of coupling capacitors 4 EDN EUROPE | JUNE 2012 EDN DI5272 Fig 4.eps DIANE www.edn-europe.com http://www.edn-europe.com/renewal http://www.edn-europe.com

Table of Contents for the Digital Edition of EDNE June 2012

Cover
Agilent Technologies
Contents
International Rectifier
RS Components
Masthead
International Rectifier
Comment
Pulse
Analog Devices
Digi-Key
Farnell
NXP
Test & Measurement
Silicon Labs
Digi-Key
Test-driven development for embedded C: why debug?
Digi-Key
Baker’s best
Cover story
Rohde & Schwarz
Rohde & Schwarz
Rohde & Schwarz
Rohde & Schwarz
Rohde & Schwarz
Pico-projector design uses color LEDs
Digital isolation in smart energy metering applications
Mechatronics in design
Teardown
Design Idea
Product Roundup
Tales from the cube

EDNE June 2012