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Offering an alternative to heat-dissipating blocking diodes, the
ZXGD3102 active OR’ing controller forecasts cooler running, lower
maintenance, and higher reliability in up-time-critical telecom, server,
and mainframe applications. The device replaces diodes with low
on-resistance MOSFETs exhibiting typical voltage drops under 100 mV. It
specifies an input voltage blocking capacity of 180V. Sinking a peak
turn-off current of 5A, the gate drive is able to achieve a typical
MOSFET turn-off time of 160 ns. Residing in an SM8 package, the chip
requires a minimal external component count and relies on a 5V to 15V
low-current bias rail. Price for the ZXGD3102 active OR’ing controller
chip is $0.98 each/1,000. DIODES INC., Westlake Village, CA. (805)
446-4800.
DATASHEET: http://www.diodes.com/datasheets/ZXGD3102.pdf
(Datasheets may take time to download, click only once.)
For more Power Controllers, click here.
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WATCH ELECTRONIC DESIGN’S EDUCAST ON UNDERSTANDING
POWER-OVER-ETHERNET
The long-awaited version 4.0 of the IEEE 802.3at standard for PoE+
(Power-over-Ethernet Plus) should be approved in the second half of
2009. It will dramatically change the way products that use power
delivered over Ethernet cables are designed. In this brief presentation,
Akros Silicon’s Amit Gattani sums up the features of the new standard
and their implications for designers. Sponsored by Maxim. Watch now!
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Extending battery life in portable audio products, the LM48824
stereo headphone amplifier exploits a Class G architecture that
significantly increases audio playback time with its adaptive power
supply approach that enables very low supply rails. This is said to
double power-efficiency when compared to typical Class AB headphone
amplifiers. The device typically draws 0.9 mA of quiescent current and
is available in a 16-bump, 1.7 mm x 1.7 mm, 0.4 mm-pitch micro SMD
package. It includes a 32-step I2C-compatible volume control
with mute and delivers 37 mW per channel into a 16-Ohm load with less
than 1% THD+N at 3.6V. Other specs include a power supply rejection
ratio of 105 dB at 217 Hz, which enables the device to operate in noisy
environments without additional power-supply conditioning. Available
now, price is $1.06 each/1,000. For more information, call NATIONAL
SEMICONDUCTOR CORP., Santa Clara, CA. (800) 272-9959.
DATASHEET: http://www.national.com/ds/LM/LM48824.pdf
(Datasheets may take time to download, click only once.)
For more Audio Amplifiers, click here.
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Designed for use with 12” to 17” industrial-grade LCD panels,
the LS6Q-1612A-RH inverter for driving cold-cathode fluorescent lamps
(CCFLs) provides dual LCD panel capability, enabling it to drive four
panels. It features brightness and backlight on-off control and a 5V
alarm output, which activates if the inverter detects a CCFL open
condition. The backlight driver provides an input of 12 Vdc and an
output current of 3.3 to 6 mArms per lamp. The device’s CCFL driving
circuit includes a self-oscillating dc/ac converter that minimizes EMI
when compared to other control methods. Total power output is 4W per
lamp, or 16W total. The LS6Q-1612A-RH measures 150 mm x 50mm x 10 mm,
requires a 1.5-kVrms startup voltage, and handles a 2A maximum input
current. Price is $42.54 each in OEM quantities. TAIYO YUDEN USA INC.,
Schaumburg, IL. (847) 925-0888.
MORE INFO: http://www.t-yuden.com/
For more DC/AC Inverters, click here.
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Watch this Educast: Building the Net-Centric Real-Time
Global Information Grid (GIG)
Building real-time data distribution systems is a challenge that must be
met in a variety of application arenas from military systems to
industrial control. The Object Management Group's (OMG) Data
Distribution Service (DDS) standard addresses this issue. Real-Time
Innovations' CEO, Dr. Rajive Joshi, presents DDS and how it can simplify
application design for developers. Sponsored by Freescale.
Watch now!
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The KXTF9 tri-axis accelerometer integrates the company’s
directional Tap/Double-Tap interface, made possible by an algorithm
embedded into the ASIC of the KXTF9 sensor. This feature creates up to
12 unique tap-enabled commands for user-specified functions. The
directional Tap/Double-Tap operates via detection of a quick, light tap
or double tap on any of the six faces of an object: ±X, ±Y, and ±Z.
The algorithm allows the accelerometer to discern a single or double tap
and the direction from which the tap originates. With an I2C
interface, the KXTF9 features include a user-programmable output data
rate with a/d conversions executed at user-defined sampling rates,
selectable eight-bit or 12-bit resolutions, user-selectable g-range (2g,
4g, and 8g), and a digital high-pass filter with a user-selectable
cut-off frequency. KIONIX INC., Ithaca, NY. (607) 257-1080.
DATASHEET: http://www.kionix.com/Product%20Sheets/KXTF9%20Series.pdf
(Datasheets may take time to download, click only once.)
For more Accelerometers, click here.
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BOARD-LEVEL & MODULAR PRODUCTS
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Designed for expanding capabilities on Pico-ITXe single board
computers, the Pico-I/O Model PICO-DIO16RO8 provides 16 TTL/LVTTL
digital I/Os and eight form C electromechanical relay outputs. The
module occupies half the area of a PC/104 board, making it suitable for
deployment in space-limited apps. Key features include a Pico-I/O USB
device featuring a SUMIT stacking connector, all 16 I/O lines buffered
with 32-mA sink/source current capabilities, support for as many as four
I/O expansion boards in a SUMIT stack, and a custom high-speed function
driver. Price for the Model PICO-DIO16RO8 is $199. ACCES I/O PRODUCTS
INC., San Diego, CA. (800) 326-1649.
MORE INFO: http://www.accesio.com/
For more I/O Modules, click here.
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Promising to stick to budget, ease and shorten the debug process,
and simplify documentation chores, the WaveJet 300A series digital
oscilloscopes sport large color displays, 500-kpoint/channel memories,
sample rates up to 2 Gsamples/s, full USB remote control, and USB
printing. They provide a wide range of triggers and acquisition modes as
well as a replay mode that scrolls through a history of previous
acquisitions to find runts and glitches. The WaveJet 300A is available
in two- and four-channel models with bandwidths from 100 MHz to 500 MHz.
Prices for the WaveJet 300A range from $2,190 (100 MHz) to $5,990 (500
MHz). LECROY CORP., Chestnut Ridge, NY. (800) 453-2769.
DATASHEET: http://www.lecroy.com/tm/products/Scopes/WaveJet-A/LeCroy_WaveJet-A_Oscilloscope_Datasheet.pdf
(Datasheets may take time to download, click only once.)
For more Oscilloscopess, click here.
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Current Salary Stats, Top 10 Skills in Demand PLUS the latest
Digital Technology Update
Electronic Design is offering the Engineer’s Career Guide, a
compendium of career guidance articles for electronic design engineers,
as a bonus to newly qualified subscribers. Electronic Design magazine
delivers hands-on how-to articles to help you get your products to
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