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Investigate Thermal Management with us on March 31, 2009: Attend
One Powerful Day.
Get the design and development information you need to do your job with
One Powerful Day — a FREE online Webcast-based conference from the
editors of Electronic Design and Power Electronics Technology. Join us
on March 31, 2009 at 12:15 PM ET as we discuss the uses of heatsinks in electronics cooling
applications. We’ll present guidelines on when/where they can be
integrated plus we will examine the basic thermal calculations for
predicting the usefulness of the devices. Don’t miss this and other
important sessions.
Register today!
Marquee Sponsor: International Rectifier | Session Sponsor: Fujipoly
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analog/mixed-signal design |
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Build SincK Decimators
By Dave Van Ess, Cypress Cemiconductor
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There's a lot of talk in engineering publications these days about
decimation filters, which are easy to construct when understood. This
article will attempt explain their operation and show the steps needed
to construct one. Let¹s start with a straightforward filter that sums
16 values together.
Read the
full article...
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Learn About Battery and Charger Options for Portable Devices
– Without Leaving Your Workspace – March 31, 2009
Engineers designing portable electronic devices need to understand the
latest technologies offered by battery, power management, and charging
circuit vendors. Beginning at 1:30 PM ET on March 31, this online
session reviews common electrical design challenges with portable
devices, and then explains how various battery options can overcome
these challenges and improve the performance of portable devices.
Battery topics include safety aspects of battery chemistries, available
form factors for batteries, performance/power/price trade-offs, accurate
state-of charge measurement, and battery authentication techniques.
Additional topics covered include the various options for the location
for charging circuitry, integration with power supplies, accelerating
charge time, preventing EMI/ESD, and passing agency safety tests. You'll
leave this session with practical and critical knowledge for designing
the portable power subsystem of a portable device. To view this session
or any of the topics covered during the Electronic Design Group’s
One Powerful Day click here to register now.
Marquee Sponsors: International Rectifier and NEC. Session Sponsor:
Micro Power Electronics
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12-Bit ADC Provides Top Performance Above 500
MHz
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The Texas Instruments ADS54RF63 provides more than 200 MHz of signal
bandwidth in applications where high resolution, accuracy, and linearity
are critical. This pipeline ADC also offers the highest SFDR and SNR
available for IF above 500 MHz, according to the company.
Read the
full article...
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Clock Generator Simplifies Clock Design,
Replaces Oscillators
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The AD9551 clock generator from Analog Devices simplifies clock
design and reduces the need for oscillators in multistandard networking
and infrastructure systems, according to the company. Its simplified
architecture can generate and translate multiple precision network clock
frequencies. This enables the replacement of as many as five
oscillators, which support functions that are essential in network
switches, routers, and line cards.
Read the
full article...
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Tiny Package Houses 550-mA, 1-MHz Synchronous
Boost DC-DC Converter
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The LTC3535 dual-channel, 1-MHz, current-mode synchronous boost
dc-dc converter from Linear Technology offers integrated output
disconnect and soft-start. Its internal 550-mA switches deliver output
voltages as high as 5.25 V from an input voltage range of 0.7-V startup,
or 0.5 V when running to 5 V, making it ideal for single-cell or
multicell NiMH as well as Li-ion and lithium-polymer applications,
according to the company.
Read the
full article...
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MicroFET MOSFETs Extend Battery Life In
Portable Applications
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The FDMA1024NZ and FDMA410NZ dual n-channel and single n-channel
MOSFETs from Fairchild Semicondcutor extend battery life in
space-constrained applications such as cellular handsets, electric
toothbrushes, and shavers. Available in a thermally enhanced 2- by 2- by
0.8-mm MicroFET micro-leadframe package (MLP), these devices offer
excellent power dissipation and ultra-low RDS(ON) to conserve
battery life, according to the company.
Read the
full article...
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TRIAC LED Driver Enables Full-Range And
Flicker-Free Dimming
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The LM3445 from National Semiconductor enables a full 100:1 range of
offline, uniform, flicker-free dimming for high-brightness LEDs with a
conventional TRIAC forward or reverse phase-control wall dimmer. It also
can maintain more than 1 A of constant current for large strings of LEDs
in a variety of residential, architectural, commercial, and industrial
applications.
Read the
full article...
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