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ADE7758ARWRL Datasheet(PDF) 2 Page - Analog Devices

Part # ADE7758ARWRL
Description  Poly Phase Multifunction Energy Metering IC with Per Phase Information
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

ADE7758ARWRL Datasheet(HTML) 2 Page - Analog Devices

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ADE7758
Rev. A | Page 2 of 68
TABLE OF CONTENTS
Specifications..................................................................................... 5
Timing Characteristics..................................................................... 7
Absolute Maximum Ratings............................................................ 9
ESD Caution.................................................................................. 9
Pin Configuration and Function Descriptions........................... 10
Terminology .................................................................................... 12
Typical Performance Characteristics ........................................... 13
Theory of Operation ...................................................................... 19
Antialiasing Filter ....................................................................... 19
Analog Inputs.............................................................................. 19
Current Channel ADC............................................................... 20
di/dt Current Sensor and Digital Integrator ........................... 21
Peak Current Detection ............................................................. 22
Overcurrent Detection Interrupt ............................................. 22
Voltage Channel ADC ............................................................... 22
Zero-Crossing Detection........................................................... 24
Phase Compensation.................................................................. 24
Period Measurement .................................................................. 26
Line Voltage SAG Detection ..................................................... 26
SAG Level Set.............................................................................. 26
Peak Voltage Detection.............................................................. 26
Phase Sequence Detection......................................................... 27
Power-Supply Monitor............................................................... 27
Reference Circuit ........................................................................ 28
Temperature Measurement ....................................................... 28
Root Mean Square Measurement ............................................. 28
Active Power Calculation .......................................................... 30
Reactive Power Calculation ...................................................... 35
Apparent Power Calculation..................................................... 38
Energy Registers Scaling ........................................................... 41
Waveform Sampling Mode ....................................................... 41
Calibration................................................................................... 41
Checksum Register..................................................................... 54
ADE7758 Interrupts................................................................... 54
Using the ADE7758 Interrupts with an MCU........................ 54
Interrupt Timing ........................................................................ 55
ADE7758 Serial Interface.......................................................... 55
ADE7758 Serial Write Operation ............................................ 56
ADE7758 Serial Read Operation ............................................. 57
Accessing the ADE7758 On-Chip Registers........................... 58
Communications Register......................................................... 58
Operational Mode Register (0x13) .......................................... 61
Measurement Mode Register (0x14) ....................................... 62
Waveform Mode Register (0x15) ............................................. 62
Computational Mode Register (0x16)..................................... 63
Line Cycle Accumulation Mode Register (0x17) ................... 64
Interrupt Mask Register (0x18) ................................................ 65
Interrupt Status Register (0x19)/Reset Interrupt Status
Register (0x1A)........................................................................... 66
Outline Dimensions ....................................................................... 67
Ordering Guide .......................................................................... 67


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