ATSENSE201A-AUR

Analog Front End (AFE) Overview

The ATSENSE201A-AUR is a dual-phase analog front-end device integrating four simultaneous Sigma-Delta ADCs, a precision voltage reference, and an SPI interface. It supports Class 0.2 energy metering with 102 dB dynamic range. The device operates on 3.0V to 3.6V power supplies, consuming less than 2.5 mW per channel at 3.3V. It features programmable current signal amplification (x1, x2, x4, x8), integrated SINC decimation filters with a typical output data rate of 16 kSps, and a dedicated anti-tamper measurement channel.

Analog Front End (AFE) Feature Summary

• Dual-phase energy metering AFE with four simultaneous Sigma-Delta ADC channels
• Compliant with ANSI C12.20-2002 and IEC 62053-22 Class 0.2 standards
• Integrated 2.8V LDO regulator and high-precision voltage reference
• Programmable gain amplifiers for shunt, CT, and Rogowski coil inputs

Analog Front End (AFE) Applications

• Single-phase smart meters with anti-tamper capabilities
• Dual-phase smart meters
• Poly-phase energy metering systems

Analog Front End (AFE) Procurement Notes

Verify the specific suffix 'A' against official Microchip documentation to confirm temperature grade and package type. Ensure compatibility with the intended microcontroller's SPI interface modes. Confirm that the required calibration registers are accessible for software compensation if high accuracy is needed.

Analog Front End (AFE) Selection Notes

Select this model for dual-phase applications requiring simultaneous voltage and current sampling. Verify that the system design accommodates the 3.0V to 3.6V operating voltage range. Consider the need for external low-pass filters at ADC inputs to reject frequency images around the 1.024 MHz sampling frequency.

Analog Front End (AFE) Part Context

This component belongs to the ATSENSE family of multi-channel analog front ends. It is designed to work in conjunction with Microchip MCUs featuring metrology libraries, such as the ATSAM4C series, to achieve high-accuracy energy measurement across wide current ranges.

Analog Front End (AFE) Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material.