Precision Op Amp Sets Industry Robustness Standard
11 November 2014 - 12:00AM
Business Wire
First precision op amp with integrated input
over-voltage protection and electro-magnetic interference filters
for more robust solution with better accuracy
Analog Devices, Inc. (NASDAQ: ADI) introduced today the
industry’s first and most robust operational amplifier that
integrates input protection against signal excursions of 32 V
beyond the supply rails and 70-dB of rejection for electro-magnetic
interference (EMI) above 1 GHz. The ADA4177-2 dual-channel,
precision, low-noise, low-input operational amplifier was designed
to address system designers’ needs for a sensor interface amplifier
with precision, linearity and environmental immunity for mission
critical process control, defense, aerospace and motor control
applications as well as multi-channel data acquisition
instrumentation designs.
The ADA4177-2 is typically used in designs where the amplifier
inputs are exposed to over-voltage and/or EMI and the need for
improved precision or protection in the signal chain is required.
The ADA4177-2 integrates input over-voltage protection (OVP) and
EMI filters to protect signal integrity while maintaining system
precision and linearity. Watch this video to learn more:
http://analog.com/ADA4177video.
- Download data sheet, order samples and
evaluation boards: www.analog.com/ADA4177-2
- For more information about robust
operational amplifiers and integrated overvoltage protection read
this technical article:
http://www.analog.com/library/analogdialogue/archives/46-02/ovp.pdf
- Get support at ADI’s EngineerZone™
online technical support community:
http://ez.analog.com/community/amplifiers
- Find more resources and other featured
products for process control and industrial automation
applications:
http://processcontrol.analog.com/en/segment/pcia.html
Problem Solved: Integrating OVP and EMI
In typical designs where an unprotected op amp is used at the
front of the signal chain and exposed to energetic voltage and
electromagnetic events, engineers often use external clamping and
filtering techniques. These external components provide only
limited effectiveness and often compromise the resulting system’s
precision and accuracy over changes in temperature and common-mode
voltage.
Using the ADA4177-2 at the front of the signal chain minimizes
the impact of these events by filtering out the EMI at the input to
the op amp or limiting the in-rush current of an over-voltage event
to a safe level. This reduces the need for external protection and
filtering components, improving system accuracy and precision,
reducing BOM cost and circuit board footprint while improving
time-to-market. In addition, the ADA4177-2 op amp’s rail-to-rail
output adds value for designers that need additional dynamic
range.
The ADA4177-2 has a typical bandwidth of 3.5 MHz and 8-nV/Hz
voltage noise at 1 kHz while consuming only 500 µA typical at 25°C
with ±15-Vdc nominal power supplies. It is specified to operate in
the -40°C to +125°C temperate range.
ADA4177 -2 Dual Precision Operational Amplifier Key
Features:
- Low offset voltage: 60 µV maximum at
25°C
- Low offset voltage drift: 0.7 µV/°C
maximum
- Low input bias current: 1.0 nA maximum
at 25°C
- Dual voltage supply operation:
- Specified at ±5 V to ±15 V
- Operation from ±2.5 V to ±18 V
Availability, Pricing and Complementary
Products
Product
Full
Production
Price Each per 1,000
Packaging
ADA4177-2
Now $1.53 SOIC-8 and
MSOP-8
The ADA4177-2 precision operational amplifier is well suited to
operate in signal chains for robust environments with ADI’s
switches and multiplexers, such as the ADG5412F and ADG5409, or
with SAR A/D converters such as the AD7980 and AD7988. For
applications requiring a dual supply precision op amp with similar
specifications to the ADA4177-2 but where the inputs need not be
protected from OVP and EMI, consider the ADA4077-2.
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 100,000
customers, representing virtually all types of electronic
equipment. Analog Devices is headquartered in Norwood,
Massachusetts, with design and manufacturing facilities throughout
the world. Analog Devices is included in the S&P 500 Index.
EngineerZone is a trademarked term of Analog Devices, Inc.
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Subscribe to Analog Dialogue, ADI’s monthly technical journal,
at: http://www.analog.com/library/analogDialogue/
Photos/Multimedia Gallery Available:
http://www.businesswire.com/multimedia/home/20141110005016/en/
Analog Devices Inc.Linda Kincaid,
781-937-4177linda.kincaid@analog.comorPorter
NovelliAndrew MacLellan,
617-897-8270andrew.maclellan@porternovelli.com
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