ADE7758ARWZ

Product Summary

The ADE7758ARWZ is a high accuracy 3-phase electrical energy measurement IC with a serial interface and two pulse outputs. The ADE7758ARWZ incorporates second-order ADCs, a digital integrator, reference circuitry, temperature sensor, and all the signal processing required to perform active, reactive, and apparent energy measurement and rms calculations. The device is suitable to measure active, reactive, and apparent energy in various 3-phase configurations, such as WYE or DELTA services, both with three or four wires. The ADE7758ARWZ provides system calibration features for each phase, i.e., rms offset correction, phase calibration, and power calibration.

Parametrics

Absolute maximum ratings:(1)AVDD to AGND: –0.3 V to +7 V; (2)DVDD to DGND: –0.3 V to +7 V; (3)DVDD to AVDD: –0.3 V to +0.3 V; (4)Analog Input Voltage to AGND, IAP, IAN, IBP, IBN, ICP, ICN, VAP, VBP, VCP, VN: –6 V to +6 V; (5)Reference Input Voltage to AGND: –0.3 V to AVDD + 0.3 V; (6)Digital Input Voltage to DGND: –0.3 V to DVDD + 0.3 V; (7)Digital Output Voltage to DGND: –0.3 V to DVDD + 0.3 V; (8)Operating Temperature Range: Industrial –40℃ to +85℃; (9)Storage Temperature Range: –65℃ to +150℃; (10)Junction Temperature: 150℃; (11)24-Lead SOIC, Power Dissipation: 88 mW; (12)JA Thermal Impedance: 53℃/W; (13)Lead Temperature, Soldering: Vapor Phase (60 sec): 215℃; Infrared (15 sec): 220℃.

Features

Features:(1)high accuracy, supports IEC 60687, IEC 61036, IEC 61268,IEC 62053-21, IEC 62053-22, and IEC 62053-23; (2)compatible with 3-phase/3-wire, 3-phase/4-wire, and other 3-phase services; (3)less than 0.1% active energy error over a dynamic range of 1000 to 1 at 25℃; (4)supplies active/reactive/apparent energy, voltage rms,current rms, and sampled waveform data; (5)two pulse outputs, one for active power and the other selectable between reactive and apparent power with programmable frequency; (6)digital power, phase, and rms offset calibration; (7)on-chip user programmable thresholds for line voltage SAG and overvoltage detections; (8)on-chip digital integrator enables direct interface-to-current sensors with di/dt output; (9)a PGA in the current channel allows direct interface to shunts and current transformers; (10)a SPI compatible serial interface with IRQ; (11)proprietary ADCs and DSP provide high accuracy over large variations in environmental conditions and time.

Diagrams