MAX78700

Multichannel, Isolated, Precision ADC

Industry's Only Isolated Data Converter That Does Not Require a Power Supply

Data Sheet (Rev. 0)
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Part Details

  • Better Than 0.5% Watt-Hour Accuracy Over Wide Dynamic Range Using a Single Calibration Point
    • High-Resolution Delta-Sigma ADC
    • Factory-Trimmed Voltage Reference and Die Temperature Sensor
  • Simplified System Architecture
    • No Power Supply Required
    • Fully Powered by the Host with the Isolation Transformer
    • Eliminates Data Isolation Components
    • Reduced Form Factor and Bill of Materials
  • Small 10-Pin µMAX® Package
MAX78700
Multichannel, Isolated, Precision ADC
MAX78700: Block Diagram
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Documentation

Data Sheet 1

Reliability Data 1

User Guide 2

Evaluation Design File 1

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Hardware Ecosystem

Parts Product Life Cycle Description
Product 1
MAX78615+PPM
Isolated Energy Measurement Processor for Polyphase Monitoring Systems
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Reference Designs

Figure 1. The Sonoma subsystem design block diagram.
Figure 1. The Sonoma subsystem design block diagram.
MAXREFDES14 Hardware.
MAXREFDES14 Circuits from the lab

Isolated Energy Measurement Subsystem Reference Design

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Features and Benefits

Applications

  • Lighting control systems
  • Commercial and industrial automation
  • Renewable energy systems
  • Electric vehicle charging systems
  • Smart home applications

Competitive Advantages

  • On-chip nonvolatile storage of calibration and configuration parameters
  • Full galvanic isolation with a single transformer
  • Small board size
  • Lower BOM cost

Features

  • High-accuracy power measurement
  • High-voltage galvanic isolation
  • Preset gain/offset parameters
  • On-board 4mΩ current sensing resistor with a good temperature coefficient
  • On-board voltage sensing resistor divider with a ratio of 2667:1 with good temperature coefficient
  • Universal AC input voltage range from 90 to 264VAC
  • Pluggable terminals for AC (8A max)
  • Small printed-circuit board (PCB) area
  • Device drivers
  • Example C source code
  • Configuration files for Xilinx® LX9 and ZedBoard™ platforms
  • Pmod™-compatible form factor
MAXREFDES14
Isolated Energy Measurement Subsystem Reference Design
Figure 1. The Sonoma subsystem design block diagram.
MAXREFDES14 Hardware.

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