ATSENSE101A-SUR

Analog Front End (AFE) Overview

The ATSENSE101A-SUR is a single-phase analog front-end device integrating three simultaneously sampled Sigma-Delta A/D converters, a high-precision voltage reference, programmable current signal amplification, and an SPI interface. Designed for data acquisition and energy measurement applications with Microchip ATSAM4C devices, it supports shunt, CT, and Rogowski coil sensors. The device achieves metrology accuracy classes up to 0.2% over a 3000:1 current range, complying with ANSI C12.20-2002 and IEC 62053-22 standards. It operates on a 3.0V to 3.6V supply with typical channel power consumption under 2.5 mW.

Analog Front End (AFE) Feature Summary

• Integrates three simultaneous Sigma-Delta ADCs (one voltage, two current) with 102 dB dynamic range
• Compliant with Class 0.2 metering standards (ANSI C12.20-2002 and IEC 62053-22)
• Includes integrated 2.8V LDO regulator and precision voltage reference with temperature drift compensation
• Features dedicated anti-tamper current channel and die temperature sensor

Analog Front End (AFE) Applications

• Single-phase smart meters with anti-tamper detection
• Data acquisition systems requiring high-precision analog front ends
• Energy measurement solutions using shunt, current transformer, or Rogowski coil sensors

Analog Front End (AFE) Procurement Notes

Verify the specific suffix 'SUR' against official documentation to confirm package type and temperature grade. Confirm availability status as distribution channels may vary. Ensure compatibility with target microcontroller SPI interfaces and voltage levels before procurement.

Analog Front End (AFE) Selection Notes

Select this component for single-phase applications requiring Class 0.2 accuracy. Compare with ATSENSE-201(H) for dual-phase or ATSENSE-301(H) for poly-phase requirements. Consider H-versions if tighter voltage reference temperature stability (10 ppm/°C) is required compared to standard versions (50 ppm/°C).

Analog Front End (AFE) Part Context

This part belongs to the ATSENSE family of multi-channel analog front ends from Microchip Technology. It is designed to work in conjunction with the ATSAM4C device family, which provides a dedicated Cortex-M4 processor and metrology library for complete energy metering solutions.

Analog Front End (AFE) Replacement Considerations

For dual-phase applications, consider the ATSENSE-201(H). For poly-phase applications, consider the ATSENSE-301(H). Standard versions are available without the 'H' suffix for less stringent temperature drift requirements.