• 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
• Standard 1.2V Output Voltage with Possible External Bypass
• Temperature Drift: 50 ppm typical (ATSENSE-101)
• 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

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/ºC 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's ATSAM4C 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.