1. Products
  2. D/A Converters (DAC)
  3. Precision D/A Converters
  4. Voltage Output D/A Converters
  5. Single-Supply Voltage Output D/A Converters
  6. MAX549A


Features and Benefits

  • +2.5V to +5.5V Single-Supply Operation
  • ±1LSB (max) TUE
  • Power-On Reset Clears All Registers to Zero
  • Low Operating Current:
    • 150µA (MAX548A/MAX549A, VREF = +2.5V)
    • 75µA (MAX550A, VREF = +2.5V)
  • 1µA Shutdown Mode
  • 10MHz, 3-Wire Serial Interface Compatible with SPI/QSPI and Microwire
  • µMAX Package-50% Smaller than 8-Pin SO
  • Independent Shutdown of DACs (MAX548A/MAX549A)

Product Details

The MAX548A/MAX549A/MAX550A serial, 8-bit voltage-output digital-to-analog converters (DACs) operate from a single +2.5V to +5.5V supply. Their ±1LSB TUE specification is guaranteed over temperature. Operating current (supply current plus reference current) is typically 75µA per DAC with VDD = 2.5V. In shutdown, the DAC is disconnected from the reference, reducing current drain to less than 1µA. The MAX548A/MAX549A allow each DAC to be shut down independently.

The 10MHz, 3-wire serial interface is compatible with SPI™/QSPI™ and Microwire™ interface standards. Double-buffered inputs provide flexibility when updating the DACs; the input and DAC registers can be updated individually or simultaneously.

The MAX548A is a dual DAC with an asynchronous load input; it uses VDD as the reference input. The MAX549A is a dual DAC with an external reference input. The MAX550A is a single DAC with an external reference input and an asynchronous load input.

The MAX548A/MAX549A/MAX550A's low power consumption and small µMAX® and DIP packages make these devices ideal for portable and battery-powered applications.


  • Battery-Powered Applications
  • Comparator-Level Settings
  • Digital Gain and Offset Control
  • GaAs Amp Bias Control
  • General Purpose
  • VCXO Control

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.

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
MAX549ACPA+ Material Declaration Reliability Data Plastic Dual-In-Line, Narrow (0.3in)
MAX549ACUA+ Material Declaration Reliability Data Micro-MAX, Thin Shrink Small-Outline
MAX549ACUA+T Material Declaration Reliability Data Micro-MAX, Thin Shrink Small-Outline
MAX549AEPA+ Material Declaration Reliability Data Plastic Dual-In-Line, Narrow (0.3in)
MAX549AEUA+ Material Declaration Reliability Data Micro-MAX, Thin Shrink Small-Outline
MAX549AEUA+T Material Declaration Reliability Data Micro-MAX, Thin Shrink Small-Outline
Wafer Fabrication Data MAX549A Reliability Data

PCN-PDN Information

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Sample & Buy

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