ANALOG DEVICES : Introduces Integrated Analog Front-End Subsystem for Diagnostic-Quality ECG Applications
02/08/2011 | 08:05am
An ECG (electrocardiogram) system measures and records the electrical
activity of a human heart in exceptional detail, enabling accurate
analysis of numerous heart conditions, including birth defects,
arrhythmias, problems with heart valves and lack of blood flow to the
heart muscle. Analog
Devices, Inc. (NYSE: ADI), a global leader in high-performance
semiconductors for signal-processing applications and long-time supplier
to the medical equipment industry, today introduced the first product in
a series of fully integrated AFE (analog front-end) chips that enable
ECG systems to achieve monitor- and diagnostic-quality performance. The
device also incorporates pacemaker pulse detection and respiration
measurement, which are critical features of any high-performance ECG
system. The performance of the new ECG AFE will be demonstrated during
DesignMED West, February 8-10, 2011, in Anaheim, California. Watch a
video on the features of the new ECG AFE, visit http://www.analog.com/ADAS1000_video.
ADI Introduces Integrated AFE for ECG Applications
(Photo: Business Wire)
The ADAS1000 ECG AFE simplifies the design of a five-electrode ECG
system by significantly reducing the signal chain bill of materials from
up to 50 components down to the ADAS1000 single chip plus a few discrete
components. The device can be configured to optimize noise performance,
power, or data rate?making it suitable for home, ambulatory, and
clinical ECG systems. Future products in the series will provide
optimized features and functionality to support traditional and emerging
ECG system applications.
The ADAS1000 is effective for a wide variety of ECG systems, including
diagnostic electrocardiographs, bedside patient monitoring systems, Holter
monitors, and cardiac defibrillators. Visit http://www.analog.com/ADAS1000
for more information or to download the datasheet.
?Improvements in ECG systems will help physicians more accurately
diagnose a wide range of conditions affecting the human heart,? said
Susie Inouye, research director, Databeans
Inc., a leading semiconductor research firm. ?AFEs that provide high
component integration and low power consumption, such as the ADAS1000,
will make it possible for medical equipment designers to develop
next-generation ECGs that are increasingly smaller and more portable.?
ADAS1000 AFE Features and Benefits
The ADAS1000 AFE provides seamless scalability for high-lead-count
systems; requires a minimum number of additional external components;
and offers several digital output interface options. The ADAS1000 AFE
can also support designs based on AAMI (Association for the Advancement
of Medical Instrumentation) and IEC (International Electrotechnical
Commission) specifications.
?The ADAS1000 AFE, which delivers a complete ECG system in a single
package, offers important ECG features such as pace detection and
respiration measurement as well as multi-lead core ECG measurements and
support functions, including leads-off detection and right leg drive,?
said Patrick O'Doherty, vice president for the Healthcare Group, Analog
Devices. "The high level of integration of the ADAS1000 AFE enables
designers to develop next-generation ECG systems that are more compact
and easier to carry without compromising the high diagnostic accuracy
needed to effectively analyze the condition of a patient's heart.?
Additional key features and benefits of the ADAS1000 include:
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A dc-coupled channel implementation that offers simplified input
switching, increased versatility, reduced power and distinct post
processing advantages;
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Operates 5 ECG electrode measurements from as little as 19mW. Any
unused channels or features can be conveniently disabled to further
minimize power to as low as 11mW for one lead;
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Low noise performance (10 µV pk-pk over 0.05 Hz to 150 Hz) to support
end equipment regulatory standards;
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Different data frame rates (2kHz, 16kHz, 128kHz) are available to
ensure ultimate ease in data capture;
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The ability to simplify overall design, eliminate many discrete
components, reduce overall system size, power consumption, and
development time.
A full-featured evaluation board for the ADAS1000 is available and
includes the AFE, power supplies, control and interface options to ease
development and manufacturing, and the ability to configure the AFE
(from 5 to 12 leads) for final deployment.
Recommended Complementary Components
Complementary components for the ADAS1000 AFE include the Blackfin®
DSP (digital signal processor), ADuM4160
single-chip USB isolator, ADuM2401
four-channel digital isolator, ADuM6000
5- kV dc-to-dc converter, ADF7023
transceiver; ADP150
and ADP151
linear regulators.
Pricing and Availability
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Price
Each In
1,000
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Packaging*
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ADAS1000
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Samples and evaluation boards are
available by contacting
ecg@analog.com
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$28
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10-mm × 10-mm
64-lead LQFP
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*ADI also plans to offer the ADAS1000 in an 8-mm × 8-mm 56-lead LFCSP
package.
Other recent healthcare announcements from ADI include the AD9278
and AD9279
octal ultrasound receivers, AD5791
high-accuracy, 20-bit DAC (digital-to-analog converter)
for MRI (magnetic resonance imaging) systems, ADAS1128
24-bit current-to-digital converter for CT (computed tomography)
systems, and ADuM4160
single-chip USB isolator for system-critical medical equipment.
Making a Difference for Healthcare Customers
Analog Devices offers healthcare customers a comprehensive portfolio of
linear, mixed-signal, MEMS and digital signal processing technologies
for medical
imaging, patient
monitoring, medical
instrumentation and home
healthcare. Backed by leading design tools, applications support,
and systems expertise, ADI's products and technologies enable
differentiation in healthcare designs – helping shape the future of
diagnostics and monitoring equipment, as well as health and wellness
devices. ADI's healthcare offerings can be found at www.analog.com/healthcare.
About Analog Devices
Innovation, performance, and excellence are the cultural pillars on
which Analog Devices has built one of the longest standing, highest
growth companies within the technology sector. Acknowledged
industry-wide as the world leader in data conversion and signal
conditioning technology, Analog Devices serves over 60,000 customers,
representing virtually all types of electronic equipment. Celebrating
over 40 years as a leading global manufacturer of high-performance
integrated circuits used in analog and digital signal processing
applications, Analog Devices is headquartered in Norwood, Massachusetts,
with design and manufacturing facilities throughout the world. Analog
Devices' common stock is listed on the New York Stock Exchange under the
ticker ?ADI? and is included in the S&P 500 Index. http://www.analog.com
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Analog Devices, Inc.
Linda Kincaid, 781-937-1472
linda.kincaid@analog.com
© Business Wire 2011
