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Overview

Features and Benefits

  • Easy Drive Technology Enables Rail-to-Rail Inputs with Zero Differential Input Current
  • Directly Digitizes High Impedance Sensors with Full Accuracy
  • 600nVRMS Noise
  • GND to VCC Input/Reference Common Mode Range
  • Programmable 50Hz, 60Hz or Simultaneous 50Hz/60Hz Rejection Mode
  • 2ppm INL, No Missing Codes
  • 1ppm Offset and 15ppm Total Unadjusted Error
  • Selectable 2× Speed Mode (15Hz Using Internal Oscillator)
  • No Latency: Digital Filter Settles in a Single Cycle
  • Single Supply 2.7V to 5.5V Operation
  • Internal Oscillator
  • Available in a Tiny (3mm × 3mm) 10-Lead DFN Package

Product Details

The LTC2484 combines a 24-bit No Latency ΔΣ™ analog-to-digital converter with patented Easy Drive™ technology. The patented sampling scheme eliminates dynamic input current errors and the shortcomings of on-chip buffering through automatic cancellation of differential input current. This allows large external source impedances and input signals with rail-to-rail input range to be directly digitized while maintaining exceptional DC accuracy.

The LTC2484 includes an on-chip oscillator. The LTC2484 can be configured to reject line frequencies. 50Hz, 60Hz or simultaneous 50Hz/60Hz line frequency rejection can be selected as well as a 2× speed-up mode.

The LTC2484 allows a wide common mode input range (0V to VCC) independent of the reference voltage. The reference can be as low as 100mV or can be tied directly to VCC. The LTC2484 includes an on-chip trimmed oscillator, eliminating the need for external crystals or oscillators. Absolute accuracy and low drift are automatically maintained through continuous, transparent, offset and full-scale calibration.

Applications

  • Direct Sensor Digitizer
  • Weight Scales
  • Direct Temperature Measurement
  • Strain Gauge Transducers
  • Instrumentation
  • Industrial Process Control
  • DVMs and Meters

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At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.

Evaluation Kits (1)

Documentation & Resources

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  • Data Sheets (1)
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  • User Guides (1)
  • Design Notes (2)
  • Product Selector Card (2)
  • Press Releases (1)
  • Technical Articles (4)
    • Document Type

    Tools & Simulations

    Linduino

    Linduino is Analog Devices’ Arduino compatible system for developing and distributing firmware libraries and example code for our integrated circuits. Each Linduino-supported product includes an example main program, defined in the LTSketchbook/Part Number folder and driver code, defined in the LTSketchbook/libraries folder.

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

    Purchase Linduino

    Linduino

    Code Files

    LTC2484 - DC939A Linduino .INO File
    LTC24XX – Linduino.CPP File
    LTC24XX – Linduino Header File
    LTC2484 Linduino .CPP File
    LTC2484 Linduino Header File

    Product Recommendations

    LTC2484 Companion Parts

    Recommended External Voltage References

    Recommended Related Parts

    Recommended Suggested Oscillator

    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.

    LTC2484 Material Declaration
    Quality And Reliability
    Symbols and Footprints

    PCN-PDN Information

    Select Model
    • LTC2484CDD#PBF Production
    • LTC2484CDD#TRPBF Production
    • LTC2484IDD#PBF Production
    • LTC2484IDD#TRPBF Production

    Support & Discussions

    LTC2484 Discussions

    RE: AD5421 Power On Reset
    All LTC2484 Discussions
    LTC2484 Contact ADI Technical Support »
    LTC2484 Ask your question »
    LTC2484 Contact ADI Technical Support » LTC2484 Ask your question »

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