1. Products
  2. Amplifiers
  3. Specialty Amplifiers
  4. Current Sense Amplifiers
  5. MAX34409


Features and Benefits

  • Enables Accurate Current Consumption Measurement on Up to Four Rails with Digital Serial Readout
    • Low 12.25mV Full-Scale Current-Sense Voltage
    • Automatic Round Robin Sequencing to Sample Each Current-Sense Input
    • Selectable Averaging to Improve Current-Sense Accuracy
    • Programmable Digital Overcurrent Thresholds with Delay Function
    • I2C/SMBus Interface with Bus Timeout
    • Register Access to Real-Time Current Measurements
  • Compatible on a Wide Range of Voltage Rails
    • Wide 2.5V to 13.2V Common-Mode Range
  • Automatic System Shutdown on Overcurrent Condition
    • Shutdown Output Provides Immediate Hardware Indication of Overcurrent

Product Details

The MAX34408 and MAX34409 are two- and four-channel current monitors that are configured and monitored with a standard I2C/SMBus serial interface. Each unidirectional current sensor offers precision high-side operation with a low full-scale sense voltage. The devices automatically sequence through two or four channels and collect the current-sense samples and average them to reduce the effect of impulse noise. The raw ADC samples are compared to user-programmable digital thresholds to indicate overcurrent conditions. Overcurrent conditions trigger a hardware output to provide an immediate indication to shut down any necessary external circuitry.


  • Base Stations
  • Industrial Controls
  • Network Switches and Routers
  • Servers
  • Smart Grid Network Systems

Product Lifecycle icon-recommended Production

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)

Tools & Simulations

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
MAX34409ETE+ Material Declaration Reliability Data 16-LFCSP-4X4X0.75
MAX34409ETE+T Material Declaration Reliability Data 16-LFCSP-4X4X0.75
Wafer Fabrication Data MAX34409 Reliability Data

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Evaluation Boards

Pricing displayed is based on 1-piece.

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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.