Datasheet ADE7754 (Analog Devices) - 3

ADE7754–SPECIFICATIONS (AVDD = DVDD = 5 V 5%, AGND = DGND = 0 V, On-Chip Reference, CLKIN = 10 MHz, TMIN to TMAX = –40 C to +85 C, unless otherwise noted.) Parameters Spec Unit Test Conditions/Comments
ACCURACY Active Power Measurement Error 0.1 % typ Over a dynamic range 1000 to 1 Phase Error between Channels (PF = 0.8 Capacitive) ±0.05 º max Phase lead 37º (PF = 0.5 Inductive) ±0.05 º max Phase lag 60º AC Power Supply Rejection1 Output Frequency Variation 0.01 % typ IAP/N = IBP/N = ICP/N = ± 100 mV rms DC Power Supply Rejection1 Output Frequency Variation 0.01 % typ IAP/N = IBP/N = ICP/N = ± 100 mV rms Active Power Measurement Bandwidth 14 kHz typ Vrms Measurement Error 0.5 % typ Over dynamic range of 20 to 1 Vrms Measurement Bandwidth 260 Hz typ Irms Measurement Error 2 % typ Over dynamic range of 100 to 1 Irms Measurement Bandwidth 14 kHz ANALOG INPUTS Maximum Signal Levels ±500 mV peak max Differential input: VAP–VN, VBP–VN, VCP–VN, IAP–IAN, IBP–IBN, ICP–ICN Input Impedance (DC) 370 kΩ min Bandwidth (–3 dB) 14 kHz typ ADC Offset Error1 25 mV max Uncalibrated error; See Terminology for details. Gain Error1 ±8 % typ External 2.5 V reference Gain Error Match1 ±3 % typ External 2.5 V reference REFERENCE INPUT REFIN/OUT Input Voltage Range 2.6 V max 2.4 V + 8% 2.2 V min 2.4 V – 8% Input Impedance 3.7 k max Input Capacitance 10 pF max TEMPERATURE SENSOR ±4 ºC Calibrated dc offset ON-CHIP REFERENCE Reference Error ±200 mV max Temperature Coefficient 30 ppm/ºC typ CLKIN Input Clock Frequency 10 MHz typ LOGIC INPUTS RESET, DIN, SCLK, CLKIN, and CS Input High Voltage, VINH 2.4 V min DVDD = 5 V ± 5% Input Low Voltage, VINL 0.8 V max DVDD = 5 V ± 5% Input Current, I ± IN 3 A max Typical 10 nA, VIN = 0 V to DVDD Input Capacitance, CIN 10 pF max LOGIC OUTPUTS CF, IRQ, DOUT, and CLKOUT Output High Voltage, VOH 4 V min DVDD = 5 V ± 5% Output Low Voltage, VOL 1 V max DVDD = 5 V ± 5% POWER SUPPLY For specified performance AVDD 4.75 V min 5 V – 5% 5.25 V max 5 V + 5% DVDD 4.75 V min 5 V – 5% 5.25 V max 5 V + 5% AIDD 7 mA max At 5.25 V DIDD 18 mA max At 5.25 V NOTES 1See Terminology section for explanation of specifications. 2See plots in the Typical Performance Characteristics section. Specifications subject to change without notice. REV. 0 –3– 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