MCP3901A0-E/SS

Analog Front End (AFE) Overview

The MCP3901A0-E/SS is a dual-channel Analog Front End (AFE) from Microchip Technology, designed for energy metering and power measurement applications. It integrates two synchronous sampling Delta-Sigma ADCs with 16-bit or 24-bit resolution, programmable gain amplifiers (PGA), phase delay compensation, and an internal voltage reference. The device supports data rates up to 64 ksps and features a high-speed 20 MHz SPI interface. It operates with independent analog (4.5V–5.5V) and digital (2.7V–5.5V) supplies, offering ultra-low-power shutdown modes and industrial temperature range availability.

Analog Front End (AFE) Feature Summary

• Dual-channel synchronous sampling with 16/24-bit resolution Delta-Sigma ADCs
• High performance metrics: 91 dB SINAD, -104 dBc THD, and 109 dB SFDR per channel
• Integrated phase delay compensation with 1 µs time resolution between channels
• Ultra-low-power shutdown mode consuming less than 2 µA

Analog Front End (AFE) Applications

• Energy Metering and Power Measurement
• Automotive Systems
• Portable Instrumentation
• Medical and Power Monitoring Devices

Analog Front End (AFE) Procurement Notes

Verify the specific suffix 'E/SS' corresponds to the SSOP-20 package and Industrial Extended temperature range (-40°C to +125°C). Confirm that the 'A0' designation aligns with the required silicon revision or feature set as defined in the official datasheet DS22192D. Ensure supply voltages match the specified AVDD and DVDD requirements before ordering.

Analog Front End (AFE) Selection Notes

Select this component when dual-channel synchronous sampling is required for accurate power calculations. Ensure the master clock frequency falls within the 1 MHz to 8.192 MHz range depending on the BOOST bit configuration. Verify that the input signal amplitude remains within the linear region defined by the PGA gain setting and the 2.4V reference voltage.

Analog Front End (AFE) Part Context

This part belongs to the MCP3901 series of analog front ends. It is distinct from single-channel variants or multi-phase solutions like the MCP3903. The 'E' indicates the extended industrial temperature range, while 'SS' denotes the 20-lead SSOP package. It serves as a dedicated AFE for interfacing with various sensors including shunts, current transformers, and Hall-effect sensors.

Analog Front End (AFE) Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Evaluate alternatives based on pin compatibility, resolution, and interface standards if direct replacement is necessary.