ADE7923ARWZ

ADCs/DACs - Special Purpose Overview

The ADE7923ARWZ is a nonisolated, three-channel sigma-delta analog-to-digital converter (ADC) designed for polyphase energy metering applications using shunt current sensors. It features one dedicated channel for measuring voltage across the shunt and two additional channels for auxiliary voltage measurements or die temperature sensing. The device operates on a single 3.3 V supply and supports IEC 62053-21/22/23 and EN 50470 standards. It interfaces with the ADE7978 via a high-speed digital link to compute active, reactive, and apparent energy. The component is housed in a 20-lead wide-body SOIC package and functions within an operating temperature range of −40°C to +85°C.

ADCs/DACs - Special Purpose Feature Summary

• Three-channel sigma-delta ADC architecture with one current channel and two voltage channels
• Nonisolated design intended for neutral line measurement in polyphase meters
• Supports EN 50470-1, EN 50470-3, IEC 62053-21, IEC 62053-22, and IEC 62053-23 standards
• Interfaces with ADE7978 via dedicated high-speed serial communication

ADCs/DACs - Special Purpose Applications

• Shunt-based polyphase energy meters
• Neutral current monitoring in 3-phase, 3-wire or 4-wire systems
• Power quality monitoring devices
• Solar inverters requiring neutral current data

ADCs/DACs - Special Purpose Procurement Notes

Verify that the application does not require electrical isolation between the primary circuit and the MCU ground. The ADE7923 is strictly a nonisolated device; if isolation is necessary, the ADE7933 or ADE7932 variants must be selected instead. Confirm compatibility with the ADE7978 main metering IC for proper chipset integration.

ADCs/DACs - Special Purpose Selection Notes

Select this part only when measuring neutral current where galvanic isolation from the neutral line is not mandated by safety regulations. Ensure the system design utilizes the ADE7978 as the central processing unit. Verify that the 20-lead wide-body SOIC package dimensions fit the PCB layout constraints.

ADCs/DACs - Special Purpose Part Context

The ADE7923 serves as the neutral phase sensor within the Analog Devices ADE7978/ADE7933/ADE7932/ADE7923 chipset. Unlike the ADE7933 and ADE7932, which include integrated isoPower isolation barriers, the ADE7923 lacks these features to reduce cost and complexity for neutral line applications where isolation is unnecessary.

ADCs/DACs - Special Purpose Replacement Considerations

For isolated neutral measurement requirements, substitute with ADE7933ARWZ or ADE7932ARWZ. For nonisolated applications requiring different channel counts, evaluate the ADE7932 variant which offers two channels.