ADE7858AACPZ-RL

Overview

The ADE7858AACPZ-RL is a polyphase multifunction energy metering IC designed for three-phase applications. It integrates multiple second-order Sigma-Delta ADCs, digital integrators, and a fixed-function DSP to perform total and harmonic power measurements. The device supports both SPI and I2C serial interfaces for communication and includes dedicated high-speed data acquisition ports. It provides waveform sampling registers for accessing all ADC outputs and features interrupt request pins for event indication.

Feature Summary

• Integrates multiple second-order Sigma-Delta ADCs with digital signal processing capabilities
• Supports simultaneous SPI and I2C serial communication interfaces
• Includes dedicated high-speed data acquisition port for real-time access
• Provides waveform sampling registers for direct ADC output monitoring

Applications

• Three-phase active and reactive power measurement
• Harmonic analysis and distortion calculation
• Energy metering systems requiring real-time data access

Procurement Notes

Verify the specific suffix 'RL' indicates reel packaging when sourcing. Confirm compatibility with existing system voltage levels and interface requirements. Ensure the component meets RoHS3 specifications as documented. Check for any recent product change notices or assembly site transfers that may affect availability or performance characteristics prior to final procurement decisions.

Selection Notes

Select this component for applications requiring integrated polyphase metering with flexible communication options. Consider the LFCSP-40 package constraints for PCB layout. Evaluate the need for high-speed data acquisition features versus standard SPI/I2C access. Verify that the internal DSP functions align with the required power calculation algorithms without external processing overhead.

Part Context

This part belongs to the ADE7858 series of energy metering ICs from Analog Devices. It is designed to replace older discrete solutions by integrating ADCs, signal conditioning, and DSP into a single chip. The series supports various three-phase configurations including Wye and Delta connections, offering a compact solution for modern smart metering infrastructure.

Replacement Considerations

The ADE7858AACPZ is listed as a similar replacement for the ADE7878ACPZ.