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Fully isolated A/D converter from Analog Devices ensures energy meter magnetic immunity
Analog Devices has introduced the industry’s first fully isolated A/D converter designed for polyphase energy metering applications. The ADE7913 3-channel, sigma-delta A/D converter incorporates Analog Devices' patented iCoupler® and isoPower® technologies to implement isolated signal transfer and dc-to-dc power conversion across a 5kV-rated insulation barrier. This enables the use of shunt resistor sensing elements instead of current transformers (CTs), thereby providing immunity to magnetic field interference and tampering. The use of shunts instead of CTs also reduces system cost and size.
“In the past, polyphase meter manufacturers had to decide between CT-based architectures vulnerable to external magnetic fields, or discrete component shunt-based architectures involving excessive complexity and functionality compromises,” said Ronn Kliger, director for the Energy Group, Analog Devices. “Now, with an integrated component incorporating synchronized A/D conversion and galvanic isolation, our customers can develop feature-rich, cost-effective metrology solutions that are completely immune to magnetic interference.”
ADE7913 Energy Metering IC Key Features
- Three 24-bit isolated A/D converters: one current channel and two voltage channels
- Integrated isoPower® isolated dc-to-dc converter
- Up to four ADE7913 energy metering ICs synchronously clocked from a single crystal or an external clock
- On-chip temperature sensor
- Integrated voltage reference and voltage regulator
- SPI serial interface
The EVAL-ADE7913EBZ evaluation board for the ADE7913 is now available.
ADI also recently announced an isolated metrology chipset designed for polyphase energy metering applications that provides state-of-the-art 3-phase metrology measurements and power quality monitoring. Learn about the new ADE7978 energy metering chipset.
Making a Difference for Energy Metering Customers
With nearly half a billion energy meters using ADI’s technology deployed worldwide, Analog Devices has delivered more energy measurement solutions than any other semiconductor company. Superior in quality, reliability, and performance, Analog Devices’ energy-metering ICs combine ADCs (analog-to-digital converters) with fixed-function DSPs (digital signal processors) to perform critical measurements, while providing unparalleled functionality and ease-of-use.
Analog Devices offers a broad range of semiconductor solutions that solve design challenges in every aspect of metering systems, including energy measurement; data and power management; user interface; and RF, GSM/GPRS, and power-line carrier communication solutions. For more information about ADI’s energy measurement products, visit http://www.analog.com/pr/Energy-Measurement. For more information about ADI’s energy solutions for renewable energy generation, transmission and distribution, and metering applications, visit www.analog.com/energy.
View the ADE7913 energy metering IC product page, order samples, and download the data sheet
For more information, or details on the full range of Analog Devices products available from Anglia, please email info@anglia.com
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This news article was originally published in April 2014.
