ade7953 Analog Devices, Inc., ade7953 Datasheet - Page 2

• Manufacturer Part Number: ade7953
• Description: Single Phase, Multifunction Metering Ic With Neutral Current Measurement Ade7953
• Manufacturer: Analog Devices, Inc.

ADE7953
TABLE OF CONTENTS
Features .............................................................................................. 1
General Description ......................................................................... 1
Functional Block Diagram .............................................................. 1
Revision History ............................................................................... 3
Specifications ..................................................................................... 4
Absolute Maximum Ratings ............................................................ 8
Pin Configuration and Function Descriptions ............................. 9
Typical Performance Characteristics ........................................... 11
Test Circuit ...................................................................................... 16
Terminology .................................................................................... 17
Theory of Operation ...................................................................... 18
Root Mean Square Measurement ................................................. 22
Active Power Calculation .............................................................. 23
Reactive Power Calculation ........................................................... 27
Apparent Power Calculation ......................................................... 30
Energy-to-Frequency Conversion ................................................ 32
Energy Calibration ......................................................................... 33
Timing Characteristics ................................................................ 6
ESD Caution .................................................................................. 8
Analog Inputs .............................................................................. 18
Analog-to-Digital Conversion .................................................. 18
Current Channel ADCs ............................................................. 20
Voltage Channel ADC ............................................................... 21
Reference Circuit ........................................................................ 21
Current Channel RMS Calculation .......................................... 22
Voltage Channel RMS Calculation ........................................... 22
Sign of Active Power Calculation ............................................. 23
Active Energy Calculation ......................................................... 24
Active Energy Accumulation Modes ....................................... 26
Sign of Reactive Power Calculation ......................................... 27
Reactive Energy Calculation ..................................................... 28
Reactive Energy Accumulation Modes ................................... 29
Apparent Energy Calculation ................................................... 30
Ampere-Hour Accumulation.................................................... 31
Pulse Output Characteristics .................................................... 32
Gain Calibration ......................................................................... 33
Phase Calibration ....................................................................... 33
Offset Calibration ....................................................................... 34
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Period Measurement ...................................................................... 35
Instantaneous Powers and Waveform Sampling ........................ 36
Power Factor.................................................................................... 37
No-Load Detection ........................................................................ 39
Zero-Crossing Detection ............................................................... 42
Voltage Sag Detection .................................................................... 44
Peak Detection ................................................................................ 45
Indication of Power Direction ...................................................... 46
Overcurrent and Overvoltage Detection..................................... 47
Alternative Output Functions ....................................................... 48
ADE7953 Interrupts ....................................................................... 49
Communicating with the ADE7953 ............................................ 50
Using the Line Cycle Accumulation Mode to Determine
the Power Factor ......................................................................... 37
Power Factor with No-Load Detection ................................... 37
Angle Measurement ................................................................... 38
Setting the No-Load Thresholds .............................................. 39
Active Energy No-Load Detection ........................................... 39
Reactive Energy No-Load Detection ....................................... 40
Apparent Energy No-Load Detection ..................................... 40
Zero-Crossing Output Pins ....................................................... 42
Zero-Crossing Interrupts .......................................................... 42
Zero-Crossing Timeout ............................................................. 43
Zero-Crossing Threshold .......................................................... 43
Setting the SAGCYC Register ................................................... 44
Setting the SAGLVL Register .................................................... 44
Voltage Sag Interrupt ................................................................. 44
Reverse Power ............................................................................. 46
Sign Indication ............................................................................ 46
Setting the OVLVL and OILVL Registers ............................... 47
Overvoltage and Overcurrent Interrupts ................................ 47
Primary Interrupts (Voltage Channel and Current
Channel A) .................................................................................. 49
Current Channel B Interrupts .................................................. 49
Communication Autodetection ............................................... 50
Locking the Communication Interface ................................... 50
SPI Interface ................................................................................ 51
I
UART Interface ........................................................................... 54
2
C Interface ................................................................................ 52