MCP3918A1T-E/ML

Overview

The MCP3918A1T-E/ML is a single-channel analog front end (AFE) designed for energy metering applications, manufactured by Microchip Technology. It features a 24-bit Sigma-Delta ADC with a sampling rate of 125 kS/s and a signal-to-noise ratio of 94 dB. The device operates on a supply voltage ranging from 2.7 V to 3.6 V and includes an internal 1.2 V reference. It supports I2C and SPI interfaces, utilizes a QFN-20 package, and is qualified under AEC-Q100 standards for automotive use.

Feature Summary

• Integrates a high-resolution 24-bit Sigma-Delta analog-to-digital converter optimized for precision energy measurement tasks.
• Provides differential input channels suitable for direct connection to current and voltage sensing elements in metering systems.
• Includes an internal reference voltage source to simplify external component requirements and reduce board space.

Applications

• Single-phase energy metering systems
• Smart grid monitoring devices
• Automotive power management units

Procurement Notes

Verify the specific suffix 'T' indicates tape-and-reel packaging rather than tube when sourcing. Confirm that the 'E' grade meets the required industrial temperature range specifications. Ensure compatibility with the target system's voltage levels for the I2C or SPI interface signals before finalizing procurement orders.

Selection Notes

Select this component for designs requiring a single-channel solution with high accuracy and automotive qualification. Compare against the two-channel variant if multiple phases are needed. Consider the QFN-20 thermal performance and PCB layout requirements for optimal noise reduction during implementation.

Part Context

This part belongs to the MCP3918 series of analog front ends. It shares architectural similarities with other members like the MCP3918A1-E/ML but differs in packaging format. The series is positioned within Microchip's portfolio for dedicated energy metering and data conversion applications.

Replacement Considerations

MCP3918A1-E/ML serves as a functional equivalent with identical electrical characteristics but uses tube packaging instead of tape-and-reel.

FAQ

What is the maximum operating temperature for this component?

The maximum operating temperature is +125°C.

Does this device support both I2C and SPI interfaces?

Yes, the MCP3918A1T-E/ML supports both I2C and SPI communication protocols.