ADE7751ARSZ

Overview

The ADE7751ARSZ is a single-phase energy metering integrated circuit designed for two-wire distribution systems. It features a 16-bit resolution with three channels, operating on a single 5V supply (4.75V to 5.25V). The device supports an industrial temperature range from -40°C to +85°C and consumes approximately 15mW of power. Packaged in a 24-pin SSOP, it integrates sigma-delta ADCs and digital signal processing for high-accuracy measurement.

Feature Summary

• Provides average real power via F1/F2 frequency outputs and instantaneous power via CF output for calibration.
• Monitors phase and neutral currents continuously to detect faults and ensure accurate billing using the larger current value.
• Integrates a programmable gain amplifier in the current channel to accommodate small shunt and burden resistances.

Applications

• Single-phase electronic active anti-tamper energy meters
• Two-wire distribution system monitoring
• Calibration of single-phase active energy meters

Procurement Notes

Verify component authenticity through authorized Analog Devices distributors or certified partners. Confirm package marking matches the SSOP-24 specification and check datasheet revisions for any pinout or functional updates. Ensure environmental compliance documentation aligns with project requirements before finalizing procurement orders.

Selection Notes

Select this component for applications requiring high accuracy over a wide dynamic range in single-phase systems. It is suitable where fault detection capabilities are necessary to prevent tampering. Consider the 24-pin SSOP footprint and 5V supply constraints during PCB layout and power design phases.

Part Context

This part belongs to the ADE7751 series of energy metering ICs from Analog Devices. It is functionally compatible with the AD7751 but offers synchronized low-frequency and high-frequency outputs across all load conditions. The series is designed to meet IEC 687/1036 standards for electrical energy measurement.

Replacement Considerations

The AD7751 is a functionally equivalent alternative within the same product family. Verify that the substitute maintains the required output synchronization characteristics and pin compatibility for direct replacement in existing designs.

FAQ

How does the ADE7751 handle fault conditions?

It continuously monitors phase and neutral currents. If the difference exceeds 12.5%, it triggers a fault indication and uses the larger of the two currents for billing.

What is the purpose of the CF output?

The CF output provides a high-frequency pulse representing instantaneous real power, which is primarily intended for meter calibration.