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Home » NEWEST Products » New by Manufacturer » Maxim Integrated » MAX71020 Single-Chip Electricity Meter AFE - Maxim Integrated
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Maxim Integrated MAX71020 Single-Chip Electricity Meter AFE

Maxim MAX71020 Single-Chip Electricity Meter AFE

Maxim Integrated MAX71020 Single-Chip Electricity Meter AFE is a single-chip, analog front-end designed for use in high-performance revenue meters. MAX71020 AFE contains the compute engine found in the Maxim Integrated fourth-generation meter system-on-chip (SoC) and an improved analog-to-digital converter (ADC). MAX71020 interfaces to the host microcontroller of choice over an SPI interface. This Maxim Integrated device comes in a 28-pin TSSOP package.


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
  • Up to Four Pulse Outputs with Pulse Count
  • Four-Quadrant Metering
  • Digital Temperature Compensation
  • Independent 32-Bit Compute Engine
  • 45Hz to 65Hz Line Frequency Range with Same Calibration
  • Phase Compensation (±10°)
  • Four Multifunction DIO Pins
  • SPI Interface
  • -40°C to +85°C Industrial Temperature Range
  • 28-Pin TSSOP Lead(Pb)-Free Package
Applications
  • Industrial Electricity Meters
  • Residential Electricity Meters

Block Diagram

Block Diagram
 

MAX71020AEVL1# Evaluation Kit

MAX71020AEVK1# Evaluation Kit demonstrates the capabilities of the MAX71020A embedded  energy measurement (EM) device. The EVK can measure AC and/or DC current and voltage utilizing a surface mount resistive shunt and resistive voltage divider. The EV kit provides an isolated SPI interface to the device over USB. A provided Windows® graphical user interface  (GUI) handles translation from the USB to device-specific  SPI protocols.


Features
  • Allows Evaluation of the MAX71020A Embedded  Energy Measurement Device in a Safe and Simple  Manner
  • Isolated SPI/USB for User Safety
  • Windows Graphical User Interface (GUI) Handles All Common Tasks
  • Easy Hook Up to Test Equipment or Other Test Environments
  • Fully Assembled and Tested
  • Precalibrated with Utility Meter Grade Equipment
  • Highly Accurate AFE for Testing
  • AC 2000:1 Dynamic Current Range at 0.5% Accuracy
  • DC Voltage and/or Current Measurement

  • Maxim Integrated
  • Power Management
  • Semiconductors|Integrated Circuits|IC-Communication & Networking