EDN Magazine, November 4, 2010

NOV

4

Issue 21/2010

Issuewww.edn.com 21/2005 www.edn.com

Bright lights, big pity Pg 54 To hack the brain, you need to hack the hardware Pg 9 Signal Integrity: Time invariance Pg 18 Design Ideas Pg 43

VOICE OF THE ENGINEER

Expanding patchwork of state e-waste laws Pg 50

For samples, design kits and whitepapers on these topics, go to:

www.avagoresponsecenter.com/441

over 5,000 patents and applications

NOV

4

Issue 21/2010

Issuewww.edn.com 21/2005 www.edn.com

Bright lights, big pity Pg 54 To hack the brain, you need to hack the hardware Pg 9 Signal Integrity: Time invariance Pg 18 Design Ideas Pg 43

VOICE OF THE ENGINEER

A MAGIC TOUCH: THE CONCEPT’S SOUND, BUT IMPLEMENTATION OPTIONS ABOUND Page 26

POWER ISLANDS CUT POWER AND COSTS IN DEEP-SUBMICRON DESIGNS Page 21

ESSENTIAL PRINCIPLES FOR PRACTICAL ANALOG BIST Page 36

Expanding patchwork of state e-waste laws Pg 50

POWER MANAGEMENT | ANALOG & RF | INTERFACE & CONNECTIVITY | CLOCKS & TIMING | MEMORY & LOGIC | TOUCH & USER INTERFACE | VIDEO & DISPLAY | AUDIO

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© 2010 Cadence Design Systems, Inc. All rights reserved. Cadence, the Cadence logo, and OrCAD are registered trademarks of Cadence Design Systems, Inc. All others trademarks are the property of their respective holders.

Cadence Channel Partner

11.4.10

contents 2.7V

A magic touch: The concept’s sound, but implementation options abound Touchscreen interfaces are becoming increasingly common, due in part to broader user awareness thanks to the iPhone and its competitors. Technology alternatives have unique mixes of strengths and shortcomings, and assessing the need for multitouch will help you select among them. by Brian Dipert, Senior Technical Editor

26

pulse

Power islands cut power and costs in deep-submicron designs

4.2V

1.2V

In the constant drive toward lowering power, the use of power islands may ease your trade-off decisions, but they involve carefully weighing increased costs and complexity. by Martin Rosicky and Mark Barry, S3 Group

21

500 MHz

25 MHz, ANY JITTER

PLL

Dilbert 14

D ANY FREQUENCY, ANY JITTER

ADJUSTABLE FREQUENCY

Q

ANALYSIS

25.1 MHz, LOW JITTER

ON- OR OFF-CHIP PLL

12 FloTherm 9 addresses thermal bottlenecks

15 Wake-up receiver offers 15- to 150-kHz range

14 Bypass-diode replacement shuts down solar-panel hot spots

15 16-bit, 250M-sample/sec ADC serves several applications

14 AMD GPUs tout performance as high as 2 TFLOPS

16 100G-sample/sec real-time scope interleaves ADCs to reduce noise

14 TI offers free Windows embedded CE 6.0 R3 BSPs

Essential principles for practical analog BIST Practical analog BIST has the potential to reduce IC-test costs and time to market. by Steve Sunter, Mentor Graphics

36

DESIGNIDEAS R3 50k

43 Circuit achieves constant current over wide range of terminal voltages 44 Limit inrush current in low- to medium-power applications Q1 46 Electronically tinge white-light source MJD50

48 Transistor boosts regulator current 48 Detect live ac-mains lines NOVEMBER 4, 2010 | EDN 5

2 GHz Clock Generator CG635...$2490 (U.S. list)

· Square wave clocks from DC to 2.05 GHz · Random jitter Factory certified FAEs Accelerate Time to Market.™ Visit the Avnet Design Resource Center™ at: www.em.avnet.com/drc

1 800 332 8638 www.em.avnet.com *As rated by Hearst Electronics Group: The Engineer & Supplier Interface Study, 2009. ©Avnet, Inc. 2010. All rights reserved. AVNET is a registered trademark of Avnet, Inc.

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