MCP3910-E/ML

Overview

The MCP3910-E/ML is a 3V two-channel Analog Front End (AFE) designed for energy metering applications. It integrates two synchronous sampling 24-bit Delta-Sigma Analog-to-Digital Converters (ADCs), two Programmable Gain Amplifiers (PGAs), and a phase delay compensation block. The device features a low-drift internal voltage reference, digital offset and gain error calibration registers, and a high-speed 20 MHz SPI-compatible serial interface. It supports resolutions from 16 to 24 bits with an Oversampling Ratio (OSR) ranging from 32 to 4096. The component operates within a supply voltage range of 2.7V to 3.6V and functions across a temperature range of -40°C to +125°C.

Feature Summary

• Integrates two synchronous sampling 24-bit resolution Delta-Sigma ADCs with independent shutdown capabilities.
• Includes advanced security features such as CRC-16 checksums on serial data outputs and register map locking via password.
• Supports direct interfacing with various sensors including shunts, current transformers, Rogowski coils, and Hall effect sensors.

Applications

• Polyphase shunt-based energy meters
• Single-phase energy metering systems
• Smart grid monitoring devices

Procurement Notes

Verify the specific suffix against official Microchip documentation to confirm package type and temperature grade. Ensure compatibility with system isolation requirements, as the two-wire serial interface design influences isolator selection per phase. Confirm that the QFN-20 footprint matches the PCB layout specifications before finalizing procurement orders.

Selection Notes

Select this component when dual-channel synchronous sampling is required for accurate power measurement in polyphase systems. The integrated calibration registers reduce external component count compared to discrete solutions. Consider the 20 MHz SPI speed and DMA accessibility if high throughput with an MCU is necessary. Evaluate the AEC-Q100 qualification status if automotive reliability standards are mandated for the target application environment.

Part Context

This part belongs to the MCP3910 family of analog front ends from Microchip Technology. It is specifically engineered for high-precision energy metering where channel synchronization is critical. The device simplifies system design by combining ADCs, PGAs, and reference circuitry into a single package, reducing board space and complexity for utility meter manufacturers.

Replacement Considerations

Publicly confirmed substitute part numbers for the MCP3910-E/ML are not available in the provided source material. Consult Microchip's official obsolescence notices or cross-reference tools for potential alternatives if this specific variant is discontinued.