MCP3905LT-E/SS

Overview

The MCP3905LT-E/SS is a single-phase energy metering integrated circuit manufactured by Microchip Technology. It features a Sigma-Delta analog-to-digital converter architecture housed in a 24-lead SSOP package. The device operates within a supply voltage range of 4.5 V to 5.5 V and supports an operating temperature range of -40°C to +125°C. It is qualified under the AEC-Q100 automotive standard, ensuring reliability for demanding environments.

Feature Summary

• Integrated high-precision analog front-end with dedicated current and voltage measurement channels
• On-chip calibration capabilities to minimize gain and offset errors without external components
• Digital signal processing core for calculating active, reactive, and apparent power metrics
• Automotive-grade qualification compliant with AEC-Q100 standards for robust performance

Applications

• Single-phase smart electricity meters
• Power quality monitoring systems
• Industrial energy management devices
• Automotive battery monitoring units

Procurement Notes

Verify the specific suffix 'LT' against the official datasheet to confirm tape-and-reel packaging specifications and ensure compatibility with automated surface-mount assembly processes. Confirm that the 'E' designation aligns with the required extended industrial temperature range and lead-free material compliance for your target application.

Selection Notes

Select this component when designing single-phase metering solutions requiring automotive-grade reliability and high accuracy. Ensure the system design accommodates the 4.5 V to 5.5 V supply requirement and utilizes the SPI interface for data retrieval. Consider the thermal characteristics of the SSOP package if high ambient temperatures are expected.

Part Context

This part belongs to the MCP3905 family of energy metering ICs from Microchip Technology. It shares functional similarities with variants like the MCP3905L and MCP3905A but differs in packaging and specific qualification levels. The LT suffix typically indicates reel packaging, distinguishing it from tube-packaged equivalents.

Replacement Considerations

Direct substitutes include other members of the MCP3905 family such as MCP3905L-I/SS or MCP3905AT-I/SS, provided they match the required packaging and temperature grade. Verify pinout compatibility and software register mapping before swapping.