ATSENSE-101 is a multi-channel analog front end device which integrates three simultaneously sampled Sigma-Delta A/D converters, a high precision voltage reference with up to 50 ppm/??C temperature stability, a programmable current signal amplification, a temperature sensor and an SPI interface. Designed to support energy measurement applications in combination with the Microchip'sATSAM4C device family that features a dedicated Cortex?-M4 processor and metrology library and a variety of sensors including Shunt, CT and Rogowski coils, the ATSENSE-101 achieve ANSI C12.20-2002 and IEC 62053-22 metering accuracy classes of up to 0.2% over 3000:1 current range.

  Analog Front End

  Single-phase Energy Metering Analog Front End for Atmel MCUs and Metrology Library

  Compliant with Class 0.2 Standards (ANSI C12.20-2002 and IEC 62053-22)

  Three Sigma-Delta ADC Measurement Channels: One Voltage, Two Currents, 102 dB Dynamic Range

  Current Channels with Pre-Gain (x1, x2, x4, x8)

  Supports Shunt, Current Transformer and Rogowski Coils

  Dedicated Current Channel for Anti-tamper Measurement

  Integrated SINC Decimation Filters. Output Data Rate: 16 kSps typical

  Integrated 2.8V LDO Regulator to Supply Analog Functions

  3.0V to 3.6V Operation, Ultra Low Power: < 2.5 mW typical/Channel @ 3.3V

  Precision Voltage Reference

  Standard 1.2V Output Voltage with Possible External Bypass

  Temperature Drift: 50 ppm typical (ATSENSE-101)

  Digital Interface

  8 MHz Serial Peripheral Interface (SPI) Compatible Mode 1 (8-bit) for ADC Data and AFE Controls

  Interrupt Output Line Signaling ADC End-of-Conversion, Underrun and Overrun