MCP3906T-I/SS

Overview

The MCP3906T-I/SS is a single-phase energy metering integrated circuit manufactured by Microchip Technology. It features two 16-bit delta-sigma analog-to-digital converters (ADCs) for simultaneous voltage and current sampling. The device includes an internal low-drift voltage reference with temperature drift less than 15 ppm/°C to ensure accuracy across industrial temperatures. A fixed-function on-chip DSP module calculates active power, while high-output drivers support mechanical counter interfacing. The component operates within a specified dynamic range and complies with IEC62053 standards for energy measurement applications.

Feature Summary

• Dual synchronous sampling 16-bit delta-sigma ADCs enable precise simultaneous acquisition of voltage and current signals for accurate power calculation.
• Integrated ultra-low drift internal voltage reference minimizes temperature-induced errors across the full industrial operating range.
• On-chip digital signal processing hardware performs active power computation without requiring external microcontroller intervention.
• High-output drive capability directly interfaces with mechanical counters to reduce field failures and mechanical wear.

Applications

• Single-phase residential and commercial electricity meters
• Analog front-end modules for LCD-based microcontroller metering systems
• Stand-alone energy monitoring devices requiring IEC62053 compliance

Procurement Notes

Verify the specific suffix 'T' indicates tape-and-reel packaging configuration against official Microchip documentation prior to ordering. Confirm that the industrial temperature grade and SSOP package dimensions match the target PCB layout requirements. Ensure compatibility with existing supply chain sources for this specific variant.

Selection Notes

Select this component when designing single-phase metering solutions requiring integrated power calculation and direct mechanical counter driving capabilities. The built-in DSP reduces system complexity compared to discrete ADC approaches. Consider the thermal performance of the SSOP package and the stability of the internal reference for long-term calibration accuracy in utility-grade applications.

Part Context

This part belongs to the MCP390x family of energy metering ICs from Microchip Technology. It serves as a specialized analog front-end solution designed specifically for utility metering applications. The series supports various communication interfaces and packaging options to accommodate different system architectures and volume production needs.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material. Consult Microchip Technology official documentation for potential cross-reference or obsolescence management strategies.