ADE7751AN

Overview

The ADE7751AN is a high-accuracy, fault-tolerant electrical energy measurement integrated circuit designed for use with two-wire distribution systems. It features a single 5 V supply and operates within a temperature range of -40°C to +85°C. The device provides average real power on frequency outputs F1 and F2, while the high-frequency output CF supplies instantaneous real power. It includes continuous monitoring of phase and neutral currents for fault detection, using the larger current value for billing during faults. The IC incorporates a programmable gain amplifier in the current channel, on-chip power supply monitoring, creep protection, and a 2.5 V reference.

Feature Summary

• Supports IEC 687/1036 standards with less than 0.1% error over a dynamic range of 500 to 1
• Enables fault detection through continuous monitoring of phase and neutral currents in two-wire systems
• Provides direct drive capability for electromechanical counters and two-phase stepper motors via logic outputs
• Integrates proprietary ADCs and DSP technology to maintain high accuracy across environmental variations

Applications

• Two-wire distribution system energy metering
• Electromechanical counter driving
• Two-phase stepper motor control
• Fault detection in electrical distribution networks

Procurement Notes

Verify the package type and suffix against official Analog Devices documentation, as the 'AN' designation typically indicates a specific package variant such as PDIP or SOIC. Confirm RoHS compliance status and lead-free specifications directly from the manufacturer's datasheet or authorized distributor declarations. Ensure the part number matches the exact revision required for your application, as manufacturing updates may affect pinout or electrical characteristics without changing the base model name.

Selection Notes

Select this component when designing energy meters for two-wire distribution systems requiring compliance with IEC 687/1036 accuracy standards. It is suitable for applications needing direct drive for mechanical counters or stepper motors. Consider its low power consumption and single 5 V supply requirement for battery-operated or low-power designs. The integrated fault detection and creep protection features make it ideal for robust utility-grade metering solutions where reliability and accuracy under varying load conditions are critical.

Part Context

The ADE7751 belongs to Analog Devices' specialized energy metering IC family, which integrates analog front-end processing with digital signal processing for precise energy measurement. This series is engineered to simplify the design of single-phase and polyphase meters by providing on-chip calibration, reference voltage, and fault detection capabilities. The ADE7751 specifically targets two-wire systems, offering a cost-effective solution that meets stringent international accuracy standards while reducing external component count.

Replacement Considerations

Check for ADE7751ARS or ADE7751ARSRL variants if surface-mount packaging is preferred. Verify compatibility with existing PCB footprints and thermal requirements when substituting package types.