Company Website:
http://www.analog.com
NORWOOD, Mass. -- (Business Wire)
Analog
Devices, Inc. today introduced a FET input AFE with an integrated
ADC driver designed to interface directly with current mode sensors such
as photo diodes and high output impedance voltage sensors. The ADA4350
integrates a FET input amplifier, switching network and ADC driver into
a single package, which simplifies design and lowers power and PCB
footprint by more than 50 percent compared to discrete implementations.
The ADA4350 features low-noise performance at low frequencies of
90nV/√Hz at 10 Hz and broadband noise of 5 nV/√Hz at 100 kHz to maximize
the signal-to-noise ratio of the sensor output. Wide dynamic range
measurement for small, sensitive signals such as photons or electrons is
enabled with the inclusion of integrated gain switching. The on-chip
programmability of the ADA4350 allows designers to select external,
optimized feedback components. With one chip, a single-ended or
differential sensor current or voltage signal can be transformed to a
high-speed, low-noise, single-ended or differential-output voltage.
In analytical measurement applications, light may need to be monitored
over many decades of intensity. This requires a variety of gain
switching networks that often incorporate multiple external amplifiers
and analog switches, which increases the potential for system errors.
The ADA4350 integrates the switching networks and input amplifier to
minimize leakage and allow the switching network to select up to six
externally configurable feedback networks. In test and measurement
systems, the same high measurement accuracy must be maintained across
the gain levels as the user adjusts the input range of the instrument.
For measuring a wider dynamic range, the ADA4350 is an ideal choice
because of its high-impedance/low-Ib input amplifier and serial
port-controlled switch network. The device also reduces PCB footprint
while significantly increasing channel count without thermal density
restrictions.
ADA4350 FET Input AFE Features
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Low noise, low input bias current FET input amplifier
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90nV/√Hz at 10 Hz
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5nV/√Hz at 100 Hz
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Integrated gain switching
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Integrated analog to digital converter driver
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Differential and single-ended mode
Pricing, Availability and Complementary Components |
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ADA4350
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NOW
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$5.73
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28-lead TSSOP
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Complementary components for the ADA4350 include the AD7960
PULSAR® differential ADC, ADR4540
voltage reference, and ADP7118
and ADP7182
linear regulators.
About Analog Devices
Analog Devices (NASDAQ: ADI) designs and manufactures semiconductor
products and solutions. We enable our customers to interpret the world
around us by intelligently bridging the physical and digital with
unmatched technologies that sense, measure and connect. Visit http://www.analog.com.
Follow ADI on Twitter at http://www.twitter.com/ADI_News
Subscribe to Analog Dialogue, ADI’s monthly technical journal,
at: http://www.analog.com/library/analogDialogue/
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Contacts:
Analog Devices, Inc.
Grainne Murphy, 353-61-495540
grainne.murphy@analog.com
or
Porter
Novelli
Andrew MacLellan, 617-897-8270
andrew.maclellan@porternovelli.com
Source: Analog Devices, Inc.
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