The ADE7912/ADE7913 are isolated, 3-channel Σ-Δ ADCs for polyphase energy metering applications using shunt current sensors. Data and power isolation are based on the Analog Devices, Inc., iCoupler® technology. The ADE7912 features two 24-bit ADCs, and the ADE7913 features three ADCs. The current ADC provides a 67 dB signal-to-noise ratio over a 3 kHz signal bandwidth, whereas the voltage ADCs provide a SNR of 72 dB over the same bandwidth. One channel is dedicated to measuring the voltage across a shunt when the shunt is used for current sensing. Up to two additional channels are dedicated to measuring voltages, which are usually sensed using resistor dividers. One voltage channel can be used to measure the temperature of the die via an internal sensor. The ADE7913 includes three channels: one current and two voltage channels. The ADE7912 has one voltage channel but is otherwise identical to the ADE7913.
|Title||Content Type||File Type|
|ADE7912/ADE7913: 3-Channel, Isolated, Sigma-Delta ADC with SPI Data Sheet (Rev 0, 11/2013) (pdf, 942 kB)||Data Sheets|
ADE7913: Magnetic Immunity for Polyphase Energy Meter Applications
The ADE7913 is a fully isolated ADC that has 3 input channels. It incorporates iCoupler® and isoPower® technologies to implement isolated signal transfer and dc-to-dc power conversion across a 5kV-rated insulation barrier and an SPI output.
|UG-571: Evaluating the ADE7913 Isolated Sigma-Delta ADC (pdf, 1070 kB)||User Guides|
|MS-2404: Trends in Three-Phase Energy Metering: New Innovative Isolated ADC Architecture Enables Three-Phase Energy Meters with Shunts (pdf, 312 kB)||Technical Articles|
|Fully Isolated A/D Converter Ensures Energy Meter Magnetic Immunity (01 Oct 2012)||Press Releases||HTML|
|ADE7912 and ADE7913 Isolated ADC Overview (pdf, 516 kB)||Overview|
|Glossary of EE Terms||Glossary||HTML|
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