MCP3905AT-E/SS

Overview

The MCP3905AT-E/SS is a single-phase energy metering integrated circuit manufactured by Microchip Technology. It operates within a supply voltage range of 4.5 V to 5.5 V and draws a typical supply current of 2.7 mA. The device features an input impedance of 390 kΩ and achieves a measurement error of 0.1%. It utilizes a 24-SSOP package with dimensions of 5.30 mm width and supports I/O high levels of 2.4 V and low levels of 0.85 V. Designed for surface mount installation, it functions reliably across an operating temperature range of -40°C to +85°C.

Feature Summary

• Provides high-accuracy energy measurement with a typical error of 0.1% across the operational dynamic range.
• Integrates analog front-end capabilities suitable for standalone or microcontroller-based metering applications.
• Supports compliance with EMC requirements defined in standards such as IEC62053.

Applications

• Standalone energy meters
• Analog front ends for LCD microcontroller-based meters
• High-accuracy residential power monitoring systems

Procurement Notes

Verify the specific suffix against official datasheets to confirm package type and temperature grade. Ensure compatibility with required interface voltages and communication protocols before integration. Confirm RoHS compliance status through manufacturer documentation. Validate that the selected variant matches the intended industrial or commercial application environment specifications.

Selection Notes

Select this component for single-phase metering designs requiring precise energy calculation. Consider the 24-SSOP package constraints for PCB layout. Evaluate the 4.5 V to 5.5 V supply requirement against system power rails. Assess the need for AEC-Q100 qualification if automotive reliability is required, noting that other variants may offer different temperature grades.

Part Context

This part belongs to the MCP3905 family of energy metering ICs from Microchip Technology. It serves as a specialized data acquisition solution for power management applications. The family includes variants with different packaging and temperature ratings, designed to support various metering architectures and cost-sensitive implementations.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Consult Microchip Technology for updated cross-reference information or alternative components within the same product family.