ATM90E32AS-AU-Y

Overview

The ATM90E32AS-AU-Y is a poly-phase energy metering integrated circuit from Microchip Technology, designed for high-precision measurement in multi-function meters. It supports three-phase systems, including three-phase four-wire (3P4W) and three-phase three-wire (3P3W) configurations. The device measures active, reactive, and apparent energy, as well as fundamental and harmonic energy components. It operates within a supply voltage range of 1.8V to 3.6V and functions reliably across an industrial temperature range of -40°C to +85°C. The component is housed in a 48-pin TQFP package with dimensions of 7x7 mm.

Feature Summary

• Supports poly-phase energy metering for both three-phase four-wire and three-phase three-wire system topologies
• Capable of measuring active, reactive, and apparent energy along with fundamental and harmonic energy components
• Integrated analog front-end optimized for high-accuracy utility-grade energy measurement applications

Applications

• Poly-phase multi-function electricity meters
• Three-phase four-wire (3P4W) energy monitoring systems
• Three-phase three-wire (3P3W) energy metering devices

Procurement Notes

Verify the specific suffix AU-Y against official Microchip documentation to confirm the tape-and-reel packaging variant and industrial temperature grade. Ensure compatibility with 1.8V/3V logic levels and 48-TQFP footprint requirements during procurement planning.

Selection Notes

Select this component for applications requiring precise poly-phase energy measurement in industrial environments. Confirm that the system design accommodates the 48-TQFP package size and that the operating voltage aligns with the specified 1.8V to 3.6V range for reliable performance.

Part Context

This part belongs to the ATM90E32 series of energy metering ICs by Microchip Technology. It is engineered for utility-grade accuracy in smart grid and industrial power monitoring solutions. The series emphasizes low-power consumption and high integration for complex multi-phase measurement tasks.

Replacement Considerations

Consult official Microchip substitution guides for verified alternatives. Do not assume pin-to-pin compatibility with other series members without explicit datasheet confirmation.