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  4. LTC2947

Data Sheet Rev. B
PDF
JP
User Guides
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Overview

Features and Benefits

  • Measures Current, Voltage, Power, Charge, Energy
  • ±30A Current Range with Low 9mA Offset
  • Integrated 300µΩ Sense Resistor
  • 0V to 15V Input Range Independent of Supply Voltage
  • Instantaneous Multiplication of Voltage and Current
  • 0.5% Voltage Accuracy
  • 1% Current and Charge Accuracy
  • 1.2% Power and Energy Accuracy
  • Alerts When Thresholds Exceeded
  • Stores Maximum and Minimum Values
  • Shutdown Mode with IQ < 10μA
  • I2C/SPI Compatible Interface
  • Available in 32-Lead 4mm × 6mm QFN Package

Product Details

The LTC2947 is a high-precision power and energy monitor with an internal sense resistor supporting up to ±30A. Three internal No Latency ΔΣ™ ADCs ensure accurate measurement of voltage and current, while high-bandwidth analog multiplication of voltage and current provides accurate power measurement in a wide range of applications. Internal or external clocking options enable precise charge and energy measurements.

An internal 300µΩ, temperature-compensated sense resistor minimizes efficiency loss and external components, simplifying energy measurement applications while enabling high accuracy current measurement over the full temperature range.

All measured quantities are stored in internal registers accessible via the selectable I2C/SPI interface. The LTC2947 features programmable high and low thresholds for all measured quantities to reduce digital traffic with the host.

Applications

  • Servers
  • Telecom Infrastructure
  • Industrial
  • Electric Vehicles
  • Photovoltaics

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Evaluation Kits (2)

Documentation & Resources

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  • 3rd Party Solutions (1)
  • Data Sheets (1)
  • Reliability Data (1)
  • User Guides (3)
  • Product Selector Card (3)
  • Solutions Bulletins & Brochures (1)
  • Videos (2)
  • Technical Articles (1)
    • Document Type

    Tools & Simulations

    Linduino

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    Linduino code repository on GitHub and instructions on how to use the code.

    Purchase Linduino

    Linduino

    Code Files

    LTC2947 Linduino Header File
    LTC2947 Linduino CPP File
    LTC2947 - DC2574A_Kit.ino File
    LTC2947 - DC2334A.ino File

    Product Recommendations

    LTC2947 Companion Parts

    Recommended Related Parts

    Design Resources

    ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.View our quality and reliability program and certifications for more information.

    Part Number Material Declaration Reliability Data Pin/Package Drawing CAD Symbols, Footprints & 3D Models
    LTC2947IUFE#PBF Material Declaration Reliability Data 32-Lead QFN (4mm x 6mm x 0.75mm w/ EP)
    LTC2947IUFE#TRPBF Material Declaration Reliability Data 32-Lead QFN (4mm x 6mm x 0.75mm w/ EP)
    Wafer Fabrication Data R567 Reliability Data

    Support & Discussions

    LTC2947 Discussions

    RE: Cannot load COM Module
    Floating Ground Transistors
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    LTC2947 Contact ADI Technical Support »
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    LTC2947 Contact ADI Technical Support » LTC2947 Ask your question »

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    Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.

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