Datasheet ADE7754 (Analog Devices) - 7

Typical Performance Characteristics–ADE7754 0.50 1.00 WYE CONNECTION GAIN = 1 0.40 PF = 1 0.80 INTERNAL REFERENCE 0.30 0.60 PHASE B 0.20 0.40 PHASE A + B + C 0.10 0.20 GAIN = 1 INTERNAL REFERENCE 0.00 0.00 PHASE A PHASE C –0.10 –0.20 PERCENT ERROR PERCENT ERROR –0.20 –0.40 –0.30 –0.60 –0.40 –0.80 –0.50 –1.00 0.01 0.1 1 10 100 1 10 100 CURRENT (% fs) CURRENT INPUT (% fs)
TPC 1. Real Power Error as a Percentage of TPC 4. Current RMS Error as a Percentage of Reading with Gain = 1 and Internal Reference Reading with Internal Reference (Gain = 1) (WYE Connection)
0.50 0.50 DELTA CONNECTION GAIN = 1 GAIN = 1 0.40 0.40 PF = 0.5 INTERNAL REFERENCE INTERNAL REFERENCE 0.30 0.30 PF = –0.5 0.20 0.20 0.10 0.10 PF = +1 0.00 0.00 –0.10 –0.10 PERCENT ERROR PF = +0.5 PERCENT ERROR –0.20 –0.20 –0.30 –0.30 –0.40 –0.40 –0.50 –0.50 0.01 0.1 1 10 100 1 10 100 CURRENT (% fs) VOLTAGE INPUT (% fs)
TPC 2. Real Power Error as a Percentage of TPC 5. Voltage RMS Error as a Percentage of Reading over Power Factor with Internal Reading with Internal Reference (Gain = 1) Reference (DELTA Connection)
1.00 0.50 GAIN = 1 GAIN = 1 PF = 0.5 PF = 0.5 0.80 0.40 INTERNAL REFERENCE EXTERNAL REFERENCE 0.60 0.30 +85
∞
C PF = +0.5 0.40 0.20 +25
∞
C PF = +1 +85
∞
C PF = +0.5 +25
∞
C PF = –0.5 0.20 0.10 0.00 0.00 +25
∞
C PF = –0.5 –0.20 –0.10 +25
∞
C PF = +1.0 PERCENT ERROR PERCENT ERROR –0.40 –0.20 –40
∞
C PF = +0.5 –0.60 –0.30 –40
∞
C PF = +0.5 –0.80 –0.40 –1.00 –0.50 0.01 0.1 1 10 100 0.01 0.1 1 10 100 CURRENT (% fs) VOLTAGE INPUT (% fs)
TPC 3. Real Power Error as a Percentage of Reading TPC 6. Real Power Error as a Percentage of Reading over Power Factor with Internal Reference (Gain = 1) over Power Factor with External Reference (Gain = 1) REV. 0 –7– Document Outline FEATURES GENERAL DESCRIPTION FUNCTIONAL BLOCK DIAGRAM SPECIFICATIONS TIMING CHARACTERISTICS ABSOLUTE MAXIMUM RATINGS ORDERING GUIDE PIN CONFIGURATION PIN FUNCTION DESCRIPTIONS Typical Performance Characteristics TERMINOLOGY Measurement Error Phase Error Between Channels Power Supply Rejection ADC Offset Error Gain Error Gain Error Match POWER SUPPLY MONITOR ANALOG INPUTS ANALOG-TO-DIGITAL CONVERSION Antialias Filter CURRENT CHANNEL ADC Current Channel ADC Gain Adjust Current Channel Sampling VOLTAGE CHANNEL ADC ZERO-CROSSING DETECTION Zero-Crossing Timeout PERIOD MEASUREMENT LINE VOLTAGE SAG DETECTION SAG Level Set PEAK DETECTION Peak Level Set TEMPERATURE MEASUREMENT PHASE COMPENSATION ROOT MEAN SQUARE MEASUREMENT Current RMS Calculation Current RMS Gain Adjust Current RMS Offset Compensation Voltage RMS Calculation Voltage RMS Gain Adjust Voltage RMS Offset Compensation ACTIVE POWER CALCULATION Power Offset Calibration Reverse Power Information TOTAL ACTIVE POWER CALCULATION ENERGY CALCULATION Integration Times Under Steady Load Energy to Frequency Conversion No Load Threshold Mode Selection of the Sum of the Three Active Energies LINE ENERGY ACCUMULATION REACTIVE POWER CALCULATION TOTAL REACTIVE POWER CALCULATION Reactive Energy Accumulation Selection APPARENT POWER CALCULATION Apparent Power Offset Calibration TOTAL APPARENT POWER CALCULATION APPARENT ENERGY CALCULATION Integration Times under Steady Load LINE APPARENT ENERGY ACCUMULATION ENERGIES SCALING CHECK SUM REGISTER SERIAL INTERFACE Serial Write Operation Serial Read Operation INTERRUPTS Using Interrupts with an MCU Interrupt Timing ACCESSING THE ADE7754 ON-CHIP REGISTERS Communications Register Operational Mode Register (0Ah) Gain Register (18h) CFNUM Register (25h) Measurement Mode Register (0Bh) Waveform Mode Register (0Ch) Watt Mode Register (0Dh) VA Mode Register (0Eh) Interrupt Enable Register (0Fh) Interrupt Status Register (10h)/Reset Interrupt Status Register (11h) OUTLINE DIMENSIONS