Description .1 Revision History .2 Functional Block Diagram..3 Specifications .4 Timing Characteristics.5 Absolute Maximum Ratings6 ESD Caution .6 Pin Configuration and Function Descriptions..7 Typical Performance Characteristics9 Test Circuit ..10 Terminology 11 Theory of Operation.12 Power Factor Considerations.12 Nonsinusoidal Voltage and Current.13 Analog Inputs .14 Current Channels..14 Voltage Channels 14 Typical Connection Diagrams15 Current Channel Connection15 Voltage Channel Connection.15 Meter Connections15 Power Supply Monitor.17 Phase Monitor 18 Phase Dropout Error18 Phase Sequence Error.18 Phase Reverse Polarity Detection18 HPF and Offset Effects20 Digital-to-Frequency Conversion21 Accumulation of 3-Phase Power.22 Transfer Function 23 Frequency Outputs F1 and F2..23 Frequency Output CF.24 Selecting a Frequency for an Energy Meter Application..25 Frequency Outputs25 No-Load Threshold..26 Outline Dimensions..27 Ordering Guide ..27 REVISION HISTORY 8 ADE7762 Rev. 0 FEATURES High accuracy supports 50 Hz/60 Hz IEC 62053-21 Less than 0.1% error over a dynamic range of 500 to 1 Compatible with 3-phase, 3-wire delta and 3-phase, 4-wire Wye configurations and F2 High frequency output (CF) is intended for calibration and supplies instantaneous active power Logic output REVP indicates a potential miswiring or negative power on the sum of all phases Dropout indication for each phase on LED driver pins Phase sequence error detection Direct drive for electromechanical counters and 2-phase stepper motors (F1 and F2) Proprietary ADCs and DSP provide high accuracy over large variations in environmental conditions and over time On-chip power supply monitoring On-chip creep protection (no load threshold) On-chip reference 2.4 V 8% (25 ppm/ C typical) with external overdrive capability Single 5 V supply, low power (42.5 mW typical) Low cost CMOS process The ADE77621 is a high accuracy polyphase electrical energy measurement IC. The ADE7762 specifications surpass specifications surpass the accuracy requiremen