Microchip Technology ATSENSE101A-SU

Description
The ATSENSE-101/ATSENSE-201(H)/ATSENSE-301(H) are multi-channel analog front end devices that integrate three, four, or seven simultaneously sampled Sigma-Delta A/D converters, a high-precision voltage reference, a programmable current signal amplification, a temperature sensor, and an SPI interface.

Features
Analog Front End:
Single-phase (ATSENSE-101), dual-phase (ATSENSE-201(H)), or poly-phase (ATSENSE-301(H)) energy metering analog front end
Compliant with Class 0.2 standards (ANSI C12.20-2002 and IEC 62053-22)
Three, four, or seven Sigma-Delta ADC measurement channels
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
3.0V to 3.6V operation, ultra-low power: <2.5 mW typical/channel @ 3.3V
Specified over two ambient operating temperature ranges: [-40°C; 85°C] and [-40°C; 105°C]
Precision Voltage Reference:
Standard 1.2V output voltage with possible external bypass
Temperature drift: 50 ppm typical (ATSENSE-101/ATSENSE-201/ATSENSE-301)
Temperature drift: 10 ppm typical (ATSENSE-201H/ATSENSE-301H)
Factory-measured temperature drift and die temperature sensor for software correction
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
Package:
32-lead TQFP, 7 x 7 x 1.4 mm
20-lead SOIC, 12.8 x 7.5 x 2.3 mm

Applications
Data acquisition
Energy measurement
Smart metering
Industrial automation
Power quality monitoring