3-Channel, Isolated, Sigma-Delta ADC with SPI Data Sheet ADE7912/ADE7913 FEATURES TYPICAL APPLICATIONS CIRCUIT PHASE PHASE PHASE ISOLATION Two (ADE7912) or three (ADE7913) isolated, - analog-to- NEUTRAL A B C BARRIER digital converters (simultaneously sampling ADCs) V1P 3.3V Integrated isoPower, isolated dc-to-dc converter VM On-chip temperature sensor IM PHASE A ADE7912/ 4-wire SPI serial interface ADE7913 IP Up to 4 ADE7912/ADE7913 devices clocked from a single V2P crystal or an external clock GND GND ISO A MCU Synchronization of multiple ADE7912/ADE7913 devices V1P 3.3V 31.25 mV peak input range for current channel VM 3.3V 500 mV peak input range for voltage channels IM PHASE B ADE7912/ Reference drift: 10 ppm/C typical ADE7913 IP Single 3.3 V supply V2P 20-lead, wide-body SOIC package with 8.3 mm creepage GND GND ISO B MCU Operating temperature: 40C to +85C V1P 3.3V Safety and regulatory approvals VM UL recognition IM PHASE C ADE7912/ 5000 V rms for 1 minute per UL 1577 ADE7913 IP GND MCU CSA Component Acceptance Notice 5A V2P IEC 61010-1: 300 V rms GND GND ISO C MCU VDE certificate of conformity V1P 3.3V DIN VDE V 0884-10 (VDE V 0884-10):2006-12 VM NEUTRAL LINE V = 846 V peak IORM IM ADE7912/ ADE7913 (OPTIONAL) APPLICATIONS IP V2P Shunt-based polyphase meters LOAD GND GND ISO N MCU Power quality monitoring Solar inverters EARTH Process monitoring Figure 1. Protective devices Isolated sensor interfaces Industrial PLCs GENERAL DESCRIPTION 1 The ADE7912/ADE7913 are isolated, 3-channel - ADCs for across a shunt when the shunt is used for current sensing. Up to polyphase energy metering applications using shunt current two additional channels are dedicated to measuring voltages, sensors. Data and power isolation are based on the Analog Devices, which are usually sensed using resistor dividers. One voltage Inc., iCoupler technology. The ADE7912 features two ADCs, channel can measure the temperature of the die via an internal and the ADE7913 features three ADCs. The current ADC provides sensor. The ADE7913 includes three channels: one current and a 67 dB signal-to-noise ratio (SNR) over a 3 kHz signal bandwidth, two voltage channels. The ADE7912 has one voltage channel but is otherwise identical to the ADE7913. whereas the voltage ADCs provide an SNR of 72 dB over the same bandwidth. One channel is dedicated to measuring the voltage 1 Protected by U.S. Patents 5,952,849 6,873,065 7,075,329 6,262,600 7,489,526 7,558,080 8,892,933. Other patents are pending. Rev. C Document Feedback Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. rights of third parties that may result from its use. Specifications subject to change without notice. No Tel: 781.329.4700 20132018 Analog Devices, Inc. All rights reserved. license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Technical Support www.analog.com Trademarks and registered trademarks are the property of their respective owners. SPI INTERFACE SYSTEM MICROCONTROLLER 11115-001ADE7912/ADE7913 Data Sheet TABLE OF CONTENTS Features .............................................................................................. 1 Temperature Sensor ................................................................... 21 Applications ....................................................................................... 1 Protecting the Integrity of Configuration Registers .............. 21 Typical Applications Circuit ............................................................ 1 CRC of Configuration Registers............................................... 21 General Description ......................................................................... 1 ADE7912/ADE7913 Status ....................................................... 22 Revision History ............................................................................... 2 Insulation Lifetime ..................................................................... 22 Functional Block Diagrams ............................................................. 4 Applications Information .............................................................. 23 Specifications ..................................................................................... 5 ADE7912/ADE7913 in Polyphase Energy Meters ................. 23 Regulatory Approvals ................................................................... 7 ADE7912/ADE7913 Clock ....................................................... 25 Insulation and Safety Related Specifications ............................ 7 SPI-Compatible Interface .......................................................... 26 DIN V VDE V 0884-10 (VDE V 0884-10):2006-12 Insulation Synchronizing Multiple ADE7912/ADE7913 Devices .......... 28 Characteristics .............................................................................. 8 Power Management ........................................................................ 31 Timing Characteristics ................................................................ 9 DC-to-DC Converter................................................................. 31 Absolute Maximum Ratings .......................................................... 10 Magnetic Field Immunity .......................................................... 32 Thermal Resistance .................................................................... 10 Power-Up and Initialization Procedures ................................. 33 ESD Caution ................................................................................ 10 Hardware Reset ........................................................................... 36 Pin Configuration and Function Descriptions ........................... 11 Software Reset ............................................................................. 36 Typical Performance Characteristics ........................................... 13 Power-Down Mode .................................................................... 36 Test Circuit ...................................................................................... 15 Layout Guidelines ........................................................................... 37 Terminology .................................................................................... 16 ADE7913 Evaluation Board ...................................................... 37 Theory of Operation ...................................................................... 18 ADE7912/ADE7913 Version .................................................... 37 Analog Inputs .............................................................................. 18 Register List ..................................................................................... 38 Analog-to-Digital Conversion .................................................. 18 Outline Dimensions ....................................................................... 41 Reference Circuit ........................................................................ 20 Ordering Guide .......................................................................... 41 CRC of ADC Output Values ..................................................... 20 REVISION HISTORY 2/2018Rev. B to Rev. C Changes to Table 8 .......................................................................... 10 Changes to Table 2 ............................................................................ 7 Changes to Pin 15 Description, Table 9 ....................................... 11 Changes to Figure 9 and Figure 11 ............................................... 13 8/2016Rev. A to Rev. B Changes to Terminology Section ................................................. 16 Added Patent Note, Note 1 .............................................................. 1 Changes to ADC Transfer Function Section and CRC of ADC Output Values Section ................................................................... 20 Change to Table 9 ........................................................................... 11 Change to Figure 12 ....................................................................... 13 Changes to Temperature Sensor Section ..................................... 21 Changes to DC-to-DC Converter Section .................................. 31 Changes to Insulation Lifetime Section ...................................... 22 Deleted Figure 31 Renumbered Sequentially ............................ 22 4/2015Rev. 0 to Rev. A Changes to SPI-Compatible Interface Section ........................... 26 Changes to Features Section and General Description Section ........ 1 Changes to SPI Read Operation in Burst Mode Section ........... 27 Changes Table 1 ................................................................................ 5 Changes to Power-Down Mode Section ..................................... 36 Changed Regulatory Approvals (Pending) Section to Regulatory Changes to Layout Guidelines Section ........................................ 37 Approvals Section ............................................................................. 7 Deleted Figure 54 ............................................................................ 37 Changes to Regulatory Approvals Section, Table 2, and Tracking Deleted Figure 55 and Figure 56 .................................................. 38 Resistance (Comparative Tracking Index) Parameter, Table 3.......... 7 Deleted Figure 57 and Figure 58 .................................................. 39 Changed DIN V VDE V 0884-10 (VDE V 0884-10) Insulation Deleted Figure 59 and Figure 60 .................................................. 40 Characteristics Section to DIN V VDE V 0884-10 (VDE V 0884-10):2006-12 Insulation Characteristics Section .................. 8 11/2013Revision 0: Initial Version Changes to Table 4 and Figure 4 ..................................................... 8 Rev. 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