ATSENSE201HA-AU

Analog Front End (AFE) Overview

The ATSENSE201HA-AU is a dual-phase analog front end (AFE) designed for energy metering applications. It integrates two 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 within a 3.0V to 3.6V supply range and consumes less than 2.5 mW per channel at 3.3V. It supports shunt, current transformer, and Rogowski coil inputs, featuring pre-gain settings of x1, x2, x4, or x8. The component meets Class 0.2 standards (ANSI C12.20-2002 and IEC 62053-22) over a 3000:1 current range.

Analog Front End (AFE) Feature Summary

• Dual-phase Metering AFE with two simultaneous Sigma-Delta ADC channels
• High-precision voltage reference with 10 ppm/°C typical temperature drift
• Programmable gain amplifier (x1, x2, x4, x8) for current channels
• Integrated die temperature sensor and SINC decimation filters

Analog Front End (AFE) Applications

• Dual-phase smart meters compliant with ANSI C12.20-2002 and IEC 62053-22
• Data acquisition systems requiring high dynamic range measurement
• Energy monitoring solutions using shunt, CT, or Rogowski coils

Analog Front End (AFE) Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm package type and temperature grade. Ensure compatibility with the intended microcontroller family, such as the ATSAM4C series, for metrology library integration. Confirm moisture sensitivity level handling during assembly processes.

Analog Front End (AFE) Selection Notes

Select the ATSENSE201HA-AU for dual-phase applications requiring Class 0.2 accuracy. The 'H' designation indicates the high-stability voltage reference variant. Ensure the system design accommodates the 32-lead TQFP package dimensions and provides adequate thermal management for the integrated LDO regulator.

Analog Front End (AFE) Part Context

This component belongs to the ATSENSE family of multi-channel analog front ends, which also includes the single-phase ATSENSE-101 and poly-phase ATSENSE-301 variants. These devices are engineered to work in conjunction with Microchip's SAM MCUs and dedicated metrology libraries to achieve precise energy measurement.

Analog Front End (AFE) Replacement Considerations

For single-phase requirements, consider the ATSENSE101HA-AU. For poly-phase applications, the ATSENSE301HA-AU offers seven measurement channels. Standard versions without the 'H' suffix (ATSENSE201A-AU) are available if the higher temperature stability is not required.