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MAX71020 Single-Chip Electricity Meter AFE

MAX71020 is an analog front-end to be used in high-performance revenue meters


Maxim's MAX71020 is a single-chip, analog front-end to be used in high-performance revenue meters. It contains the compute engine found in Maxim's fourth-generation meter SOC,an improved ADC, and interfaces to the host microcontroller of choice over an SPI interface.

The MAX71020 comes in a 28-pin TSSOP package.
Maxim's MAX71020 Single-Chip Electricity Meter AFE

Features
  • 0.1% accuracy over 2000:1 current range
  • Exceeds IEC 62053/ANSI C12.20 standards
  • Two differential current sensor inputs
  • Two voltage sensor inputs
  • Selectable gain of 1 or 9 for one current input to support a shunt
  • High-speed Wh/VARh pulse outputs with programmable width
  • SPI interface
  • Up to four pulse outputs with pulse count
  • Four-quadrant metering
  • Digital temperature compensation
  • Independent 32-Bit compute engine
  • 45 Hz to 65 Hz line frequency range with same calibration
  • Phase compensation (±10°)
  • Four multifunction DIO pins
  • -40°C to +85°C industrial temperature range

Applications
  • Industrial electricity meters
  • Residential electricity meters

Digi-Key P/N Manufacturer P/N Description  
MAX71020AEUI+-ND MAX71020AEUI+ IC ENERGY METER 1PH 28TSSOP Datasheet