ATSENSE-301(H) are multi-channel analog front end devices which integrate seven simultaneously sampled Sigma-Delta A/D converters, a high-precision voltage reference with up to 10 ppm/??C temperature stability (H-versions), 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, Current Transformer and Rogowski coils, the ATSENSE-301(H) achieve ANSI C12.20-2002 and IEC 62053-22 metering accuracy classes of up to 0.2% over 3000:1 current range.

Key FeaturesAnalog Front EndPoly-phase (ATSENSE-301(H)) Energy Metering Analog Front End for Microchip MCUs and Metrology LibraryCompliant with Class 0.2 Standards (ANSI C12.20-2002 and IEC 62053-22)Seven Sigma-Delta ADC Measurement Channels: Three Voltages, Four Currents, 102 dB Dynamic RangeCurrent Channels with Pre-Gain (x1, x2, x4, x8) Supports Shunt, Current Transformer and Rogowski CoilDedicated Current Channel for Anti-tamper MeasurementIntegrated SINC Decimation Filters. Output Data Rate: 16 kSps typicalIntegrated 2.8V LDO Regulator to Supply Analog Functions3.0V to 3.6V Operation, Ultra Low Power: < 2.5 mW typical/Channel @ 3.3VPrecision Voltage ReferenceStandard 1.2V Output Voltage with Possible External BypassTemperature Drift: 50 ppm typical (ATSENSE-301)Temperature Drift: 10 ppm typical (ATSENSE-301H)Factory-measured Temperature Drift and Die Temperature Sensor to perform Software Correction (ATSENSE-301H)Digital Interface8.192 MHz Serial Peripheral Interface (SPI) Compatible Mode 1 (8-bit) for ADC Data and AFE ControlsInterrupt Output Line Signaling ADC End-of-Conversion, Underrun and Overrun