ADE7751ARSZRL

Product Summary

The ADE7751ARSZRL is a high-accuracy, fault-tolerant electrical energy measurement IC that is intended for use with 2-wire distribution systems. The part specifications surpass the accuracy requirements as quoted in the IEC1036 standard. The only analog circuitry used in the ADE7751ARSZRL is in the ADCs and reference circuit. All other signal processing (e.g., multiplication and filtering) is carried out in the digital domain. This approach provides superior stability and accuracy over extremes in environmental conditions and over time.

Parametrics

ADE7751ARSZRL 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 V1A, V1B, V1N, V2P, and V2N: -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 Plastic DIP, Power Dissipation: 450 mW, θJA Thermal Impedance: 105℃/W; (12)Lead Temperature, (Soldering 10 sec): 260℃; (13)24-Lead SSOP, Power Dissipation: 450 mW, θJA Thermal Impedance: 112℃/W; (14)Lead Temperature, Soldering, Vapor Phase (60 sec): 215℃; Infrared (15 sec): 220℃.

Features

ADE7751ARSZRL features: (1)High Accuracy, Surpasses 50 Hz/60 Hz IEC 687/1036; (2)Less than 0.1% Error over a Dynamic Range of 500 to 1; (3)Supplies Average Real Power on the Frequency Outputs F1 and F2; (4)High-Frequency Output CF Is Intended for Calibration and Supplies Instantaneous Real Power; (5)Continuous Monitoring of the Phase and Neutral Current Allows Fault Detection in 2-Wire Distribution Systems; (6)ADE7751 Uses the Larger of the Two Currents (Phase or Neutral) to Bill—Even During a Fault Condition; (7)Two Logic Outputs (FAULT and REVP) Can Be Used to Indicate a Potential Miswiring or Fault Condition; (8)Direct Drive for Electromechanical Counters and 2-Phase Stepper Motors (F1 and F2); (9)A PGA in the Current Channel Allows the Use of Small Values of Shunt and Burden Resistance; (10)Proprietary ADCs and DSP Provide High Accuracy over Large Variations in Environmental Conditions and Time; (11)On-Chip Power Supply Monitoring; (12)On-Chip Creep Protection (No Load Threshold); (13)On-Chip Reference 2.5 V ±8% (30 ppm/℃ Typical) with External Overdrive Capability; (14)Single 5 V Supply, Low Power (15 mW Typical); (15)Low-Cost CMOS Process.

Diagrams