ATSENSE301HA-AUR

Analog Front End (AFE) Overview

The ATSENSE301HA-AUR is a poly-phase analog front end (AFE) from Microchip Technology, designed for high-precision energy metering. It integrates seven simultaneously sampled Sigma-Delta A/D converters, a high-precision voltage reference with up to 10 ppm/°C temperature stability, programmable current signal amplification, and an SPI interface. The device operates on a 3.0V to 3.6V digital supply and a 2.7V to 2.9V analog supply, consuming less than 2.5 mW per channel at 3.3V. It features a 32-lead TQFP package and supports ANSI C12.20-2002 and IEC 62053-22 Class 0.2 standards over a 3000:1 current range.

Analog Front End (AFE) Feature Summary

• Integrates seven Sigma-Delta ADCs with 102 dB dynamic range for poly-phase energy metering
• High-precision voltage reference with 10 ppm/°C typical temperature drift for H-grade versions
• Programmable gain amplifiers (x1, x2, x4, x8) for current channels supporting shunts, CTs, and Rogowski coils
• Includes dedicated anti-tamper measurement channel and integrated die temperature sensor

Analog Front End (AFE) Applications

• Poly-phase smart meters compliant with ANSI C12.20-2002 and IEC 62053-22 Class 0.2 standards
• Data acquisition systems requiring simultaneous multi-channel sampling
• Energy measurement applications using shunt, current transformer, or Rogowski coil sensors

Analog Front End (AFE) Procurement Notes

Verify the 'AUR' suffix indicates tape and reel packaging when ordering. Confirm the 'H' designation ensures the 10 ppm/°C voltage reference stability required for Class 0.2 accuracy. Ensure the host MCU supports the required SPI interface and metrology library integration for proper calibration data retrieval.

Analog Front End (AFE) Selection Notes

Select this model for poly-phase applications requiring seven measurement channels. The 'H' variant is necessary for low temperature drift specifications. Compare against ATSENSE201HA for dual-phase needs or ATSENSE101 for single-phase requirements. Ensure the system design accommodates the 32-TQFP package dimensions of 7x7x1.4 mm.

Analog Front End (AFE) Part Context

This component belongs to the ATSENSE family, which includes the ATSENSE-101 (single-phase), ATSENSE-201(H) (dual-phase), and ATSENSE-301(H) (poly-phase). The ATSENSE301HA-AUR specifically provides the highest channel count within this series, enabling comprehensive three-phase four-wire metering solutions when paired with Microchip MCUs like the ATSAM4C family.

Analog Front End (AFE) Replacement Considerations

ATSENSE301HA-AU is the tray-packaged equivalent of this part number.