MCP3919A1-E/MQ

Overview

The MCP3919A1-E/MQ is a single-channel, 24-bit Analog-to-Digital Converter (ADC) designed for high-precision energy metering applications. It features an integrated voltage reference and supports serial communication via an SPI interface. The device operates within a supply voltage range of 2.7V to 5.5V and is qualified for automotive environments under AEC-Q100 Grade 1 standards. It functions across an extended temperature range from -40°C to +125°C, housed in an 8-pin MQFP package.

Feature Summary

• High-resolution 24-bit ADC architecture for precise signal acquisition
• Integrated on-chip voltage reference with low temperature drift
• Automotive-grade reliability compliant with AEC-Q100 specifications
• Serial digital interface for efficient data transfer and configuration

Applications

• Single-phase residential energy metering
• Smart grid monitoring systems
• Industrial power quality analysis
• Automotive battery management systems

Procurement Notes

Verify the specific suffix 'MQ' corresponds to the 8-pin MQFP package when sourcing. Confirm that the '-E' designation indicates the extended industrial/automotive temperature grade. Ensure compatibility with the target system's SPI clock speeds and voltage levels before integration. Cross-reference the latest Microchip datasheet for any pinout or electrical characteristic updates.

Selection Notes

Select this component when a single-channel, high-precision measurement solution is required for energy or current sensing. It is suitable for designs needing integrated reference capabilities to reduce external component count. Consider the automotive qualification if the application demands operation under harsh environmental conditions. Evaluate the trade-off between the 24-bit resolution and the system's processing speed requirements.

Part Context

This part belongs to the MCP391x family of energy measurement ICs from Microchip Technology. These devices are engineered to meet international energy metering standards such as IEC 62053. The family provides solutions for accurate active and reactive power measurement, supporting both utility and industrial applications with varying channel counts and interface options.

Replacement Considerations

Check for direct substitutes within the MCP391x series, such as other channel variants like the MCP3919A2 or MCP3919A4, which share similar architectures but offer multiple channels. Verify package compatibility if transitioning to different pin counts. Consult Microchip's official obsolescence notices for any discontinued variants.