Datasheet ADE7753 (Analog Devices) - 4

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ADE7753 SPECIFICATIONS
AVDD = DVDD = 5 V ± 5%, AGND = DGND = 0 V, on-chip reference, CLKIN = 3.579545 MHz XTAL, TMIN to TMAX = −40°C to +85°C. See the plots in the Typical Performance Characteristics section.
Table 1. Parameter Spec Unit Test Conditions/Comments
ENERGY MEASUREMENT ACCURACY Active Power Measurement Error CLKIN = 3.579545 MHz Channel 1 Range = 0.5 V Full Scale Channel 2 = 300 mV rms/60 Hz, gain = 2 Gain = 1 0.1 % typ Over a dynamic range 1000 to 1 Gain = 2 0.1 % typ Over a dynamic range 1000 to 1 Gain = 4 0.1 % typ Over a dynamic range 1000 to 1 Gain = 8 0.1 % typ Over a dynamic range 1000 to 1 Channel 1 Range = 0.25 V Full Scale Gain = 1 0.1 % typ Over a dynamic range 1000 to 1 Gain = 2 0.1 % typ Over a dynamic range 1000 to 1 Gain = 4 0.1 % typ Over a dynamic range 1000 to 1 Gain = 8 0.2 % typ Over a dynamic range 1000 to 1 Channel 1 Range = 0.125 V Full Scale Gain = 1 0.1 % typ Over a dynamic range 1000 to 1 Gain = 2 0.1 % typ Over a dynamic range 1000 to 1 Gain = 4 0.2 % typ Over a dynamic range 1000 to 1 Gain = 8 0.2 % typ Over a dynamic range 1000 to 1 Active Power Measurement Bandwidth 14 kHz Phase Error 1 between Channels1 ±0.05 max Line Frequency = 45 Hz to 65 Hz, HPF on AC Power Supply Rejection1 AVDD = DVDD = 5 V + 175 mV rms/120 Hz Output Frequency Variation (CF) 0.2 % typ Channel 1 = 20 mV rms, gain = 16, range = 0.5 V Channel 2 = 300 mV rms/60 Hz, gain = 1 DC Power Supply Rejection1 AVDD = DVDD = 5 V ± 250 mV dc Output Frequency Variation (CF) ±0.3 % typ Channel 1 = 20 mV rms/60 Hz, gain = 16, range = 0.5 V Channel 2 = 300 mV rms/60 Hz, gain = 1 IRMS Measurement Error 0.5 % typ Over a dynamic range 100 to 1 IRMS Measurement Bandwidth 14 kHz VRMS Measurement Error 0.5 % typ Over a dynamic range 20 to 1 VRMS Measurement Bandwidth 140 Hz ANALOG INPUTS2 See the Analog Inputs section Maximum Signal Levels ±0.5 V max V1P, V1N, V2N, and V2P to AGND Input Impedance (dc) 390 k min Bandwidth 14 kHz CLKIN/256, CLKIN = 3.579545 MHz Gain Error1, 2 External 2.5 V reference, gain = 1 on Channels 1 and 2 Channel 1 Range = 0.5 V Full Scale ±4 % typ V1 = 0.5 V dc Range = 0.25 V Full Scale ±4 % typ V1 = 0.25 V dc Range = 0.125 V Full Scale ±4 % typ V1 = 0.125 V dc Channel 2 ±4 % typ V2 = 0.5 V dc Offset Error1 ±32 mV max Gain 1 Channel 1 ±13 mV max Gain 16 ±32 mV max Gain 1 Channel 2 ±13 mV max Gain 16 WAVEFORM SAMPLING Sampling CLKIN/128, 3.579545 MHz/128 = 27.9 kSPS Channel 1 See the Channel 1 Sampling section Signal-to-Noise Plus Distortion 62 dB typ 150 mV rms/60 Hz, range = 0.5 V, gain = 2 Bandwidth(–3 dB) 14 kHz CLKIN = 3.579545 MHz Rev. C | Page 4 of 60 Document Outline FEATURES GENERAL DESCRIPTION FUNCTIONAL BLOCK DIAGRAM TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS TIMING CHARACTERISTICS ABSOLUTE MAXIMUM RATINGS ESD CAUTION TERMINOLOGY PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS THEORY OF OPERATION ANALOG INPUTS di/dt CURRENT SENSOR AND DIGITAL INTEGRATOR ZERO-CROSSING DETECTION Zero-Crossing Timeout PERIOD MEASUREMENT POWER SUPPLY MONITOR LINE VOLTAGE SAG DETECTION Sag Level Set PEAK DETECTION Peak Level Set Peak Level Record ADE7753 INTERRUPTS Using the ADE7753 Interrupts with an MCU Interrupt Timing TEMPERATURE MEASUREMENT ADE7753 ANALOG-TO-DIGITAL CONVERSION Antialias Filter ADC Transfer Function ADE7753 Reference Circuit CHANNEL 1 ADC Channel 1 Sampling Channel 1 RMS Calculation Channel 1 RMS Offset Compensation CHANNEL 2 ADC Channel 2 Sampling Channel 2 RMS Calculation Channel 2 RMS Offset Compensation PHASE COMPENSATION ACTIVE POWER CALCULATION ENERGY CALCULATION Integration Time under Steady Load POWER OFFSET CALIBRATION ENERGY-TO-FREQUENCY CONVERSION LINE CYCLE ENERGY ACCUMULATION MODE POSITIVE-ONLY ACCUMULATION MODE NO-LOAD THRESHOLD REACTIVE POWER CALCULATION SIGN OF REACTIVE POWER CALCULATION APPARENT POWER CALCULATION Apparent Power Offset Calibration APPARENT ENERGY CALCULATION Integration Times under Steady Load LINE APPARENT ENERGY ACCUMULATION ENERGIES SCALING CALIBRATING AN ENERGY METER BASED ON THE ADE7753 Watt Gain Calibrating Watt Gain Using a Reference Meter Example Calibrating Watt Gain Using an Accurate Source Example Watt Offset Calibrating Watt Offset Using a Reference Meter Example Calibrating Watt Offset with an Accurate Source Example Phase Calibration Calibrating Phase Using a Reference Meter Example Calibrating Phase with an Accurate Source Example VRMS and IRMS Calibration Apparent Energy Reactive Energy CLKIN FREQUENCY SUSPENDING ADE7753 FUNCTIONALITY CHECKSUM REGISTER ADE7753 SERIAL INTERFACE ADE7753 Serial Write Operation ADE7753 Serial Read Operation ADE7753 REGISTERS ADE7753 REGISTER DESCRIPTIONS COMMUNICATIONS REGISTER MODE REGISTER (0x09) INTERRUPT STATUS REGISTER (0x0B), RESET INTERRUPT STATUS REGISTER (0x0C), INTERRUPT ENABLE REGISTER (0x0A) CH1OS REGISTER (0x0D) OUTLINE DIMENSIONS ORDERING GUIDE