Datasheet ADE7754 (Analog Devices) - 5

ADE7754 ABSOLUTE MAXIMUM RATINGS*
Storage Temperature Range . –65°C to +150°C (T Junction Temperature . 150°C A = +25°C, unless otherwise noted.) AV 24-Lead SOIC, Power Dissipation . 88 mW DD to AGND . –0.3 V to +7 V DV DD to DGND . –0.3 V to +7 V JA Thermal Impedance . 53°C/W DV Lead Temperature, Soldering DD to AVDD . –0.3 V to +0.3 V Analog Input Voltage to AGND Vapor Phase (60 sec) . 215°C I Infrared (15 sec) . 220°C AP, IAN, IBP, IBN, ICP, ICN, VAP, VBP, VCP, VN . –6 V to +6 V Reference Input Voltage to AGND . –0.3 V to AVDD + 0.3 V *Stresses above those listed under Absolute Maximum Ratings may cause perma- Digital Input Voltage to DGND . –0.3 V to DVDD + 0.3 V nent damage to the device. This is a stress rating only; functional operation of the Digital Output Voltage to DGND . –0.3 V to DVDD + 0.3 V device at these or any other conditions above those listed in the operational Operating Temperature Range sections of this specification is not implied. Exposure to absolute maximum rating Industrial . –40°C to +85°C conditions for extended periods may affect device reliability.
ORDERING GUIDE Model Package Description Package Option*
ADE7754AR 24-Lead SOIC RW-24 ADE7754ARRL 24-Lead SOIC RW-24 in Reel EVAL-ADE7754EB ADE7754 Evaluation Board *RW = Small Outline (Wide Body Package in Tubes)
CAUTION
ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily accumulate on the human body and test equipment and can discharge without detection. Although the ADE7754 features proprietary ESD protection circuitry, permanent damage may occur on devices subjected to high energy electrostatic discharges. Therefore, proper ESD precautions are recommended to avoid performance degradation or loss of functionality.
PIN CONFIGURATION CF 1 24 DOUT DGND 2 23 SCLK DV 3 22 DD DIN AV 4 21 DD CS I 5 20 AP CLKOUT ADE7754 I 6 AN TOP VIEW 19 CLKIN (Not to Scale) I 7 18 BP IRQ I 8 17 BN RESET ICP 9 16 VAP I 10 15 CN VBP AGND 11 14 VCP REF 12 13 IN/OUT VN PIN FUNCTION DESCRIPTIONS Pin No. Mnemonic Description
1 CF Calibration Frequency Logic Output. This pin provides active power information. This output is intended to be used for operational and calibration purposes. The full-scale output frequency can be scaled by writing to the CFNUM and CFDEN registers. See the Energy to Frequency Conversion section. 2 DGND This pin provides the ground reference for the digital circuitry in the ADE7754 (i.e. multiplier, filters, and a digital-to-frequency converter). Because the digital return currents in the ADE7754 are small, this pin can be connected to the analog ground plane of the whole system. However high bus capacitance on the DOUT pin may result in noisy digital current, which could affect performance. REV. 0 –5– 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