Highly Integrated Analog Front-Ends with 24-bit Converter Cores Achieve Industry’s Best Combination of Low Power & Noise Pe...
27 Juli 2015 - 2:00PM
Business Wire
Analog Devices, Inc. introduced two analog front-end (AFE)
devices with integrated 24-bit sigma-delta converter cores that
deliver the industry’s best combination of low-power, low-noise and
signal chain integration. The AD7124-4 and AD7124-8 AFEs connect
directly to all standard industrial signal sources and sensor
inputs, while reducing power requirements by 40 percent over
comparable devices. The best-in-class power performance suits the
new AFEs for an array of industrial and instrumentation
applications including low power portable equipment. The high
degree of integration of the AD7124-4 (four differential and seven
pseudo-differential inputs) and the AD7124-8 AFEs (eight
differential and 15 pseudo-differential inputs) simplifies design
architecture and shortens the design cycle by providing the
flexibility to support easily multiple types of sensor inputs,
including resistance temperature detectors, thermocouples,
voltage/current inputs and current bridges. Enabling the highest
system channel density of any comparable products, the new AFEs
allow designers to reduce PCB footprint or apply the space savings
to expand monitoring and connectivity functions within the same
board area.
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- Download data sheet, view product page,
order samples and evaluation
boards:http://www.analog.com/AD7124-4http://www.analog.com/AD7124-8
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EngineerZone®, an online technical support community:
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The AD7124-4 and AD7124-8 incorporate a fully integrated signal
chain with a 24-bit sigma-delta A/D converter, programmable gain
amplifier (PGA), precision reference, reference buffers, current
sources, temperature sensor and excitation sources on a single
chip. Integrated diagnostic features support SIL compatibility and
reduce the need for discrete diagnostic components saving valuable
PCB area.
The AD7124-4 and AD7124-8 offer three user-selectable power
modes that allow system designers to optimize throughput rate
versus required noise performance. In the lowest power mode (255
µA) the converter delivers 21.7 noise free bits at low sampling
rates. The user-selectable power modes allow designers of
programmable-logic controllers, process controllers, transmission
systems and other industrial and instrumentation equipment to
develop a single platform by precisely matching power/performance
requirements for each use case.
AD7124-4/AD7124-8 Features
- RMS Noise (gain = 128)
- 255 µA typ (24 nV rms at 1.17 Hz) in
Low Power Mode
- 355 µA typ (20 nV rms at 2.34 Hz) in
Mid Power Mode
- 930 µA typ (23 nV rms at 9.4 Hz) in
Full Power Mode
- Output data rate:
- 9.38 sps to 19,200 sps (Full Power
Mode)
- 2.34 sps to 4,800 sps (Mid Power
Mode)
- 1.17 sps to 2,400 sps (Low Power
Mode)
- Rail to Rail Analog Inputs for
gains
- 10 ppm/°C integrated 2.5 V buffered
reference (AD7124-4)
- Flexible & per channel programmable
digital filters
- Enhanced filters for simultaneous 50 Hz
and 60 Hz rejection
- On-chip diagnostics
- −40°C to +105°Operating Temperature
Range
Pricing, Availability and Complementary
Components
Product
Description
Price Each
In1,000Quantities
Packaging Availability
AD7124-4 4 Differential/7 Pseudo Differential
Inputs
$5.32 5mm x 5 mm
32-lead LFCSP
24-lead TSSOP
NOW AD7124-8 8 Differential/15 Pseudo
Differential
Inputs
$5.84 5mm x 5 mm
32-lead LFCSP
NOW EVAL-AD7124-4SDZ Evaluation Board
$59.00 per unit
NOW EVAL-SDP-CB1Z Evaluation Controller Board SDP
$99.00 per unit
NOW
For low-power digital isolation requirements, the ADuM1441
micropower quad-channel digital isolator is recommended.
About Analog DevicesAnalog 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
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View source
version on businesswire.com: http://www.businesswire.com/news/home/20150727005030/en/
Analog Devices, Inc.Linda Kincaid,
781-937-1472linda.kincaid@analog.comorPorter
NovelliAndrew MacLellan,
617-897-8270andrew.maclellan@porternovelli.com
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