Dual, 8-Bit, Voltage-Output Serial DAC in 8-Pin SO Package

Dual, Serial, Voltage-Output DAC

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The MAX522 contains two 8-bit, buffered, voltage-output digital-to-analog converters (DAC A and DAC B) in small 8-pin SO and DIP packages. DAC A's buffer can source and sink 5mA, and DAC B's output can source and sink 500µA, both to within 0.5V of ground and VDD. The MAX522 operates with a single +2.7V to +5.5V supply.

The device utilizes a 3-wire serial interface, which operates at clock rates up to 5MHz and is compatible with SPI™, QSPI™, and Microwire™ interface standards. The serial input shift register is 16 bits long and consists of eight bits of DAC input data and eight bits for DAC selection and shutdown control. DAC registers can be loaded independently or in parallel at the positive edge of active-low CS.

The MAX522's ultra-low power consumption and small 8-pin SO package make it ideal for portable and battery-powered applications. Supply current is less than 1mA and drops below 1µA in shutdown mode. In addition, the reference input is disconnected from the REF pin during shutdown, further reducing the system's total power consumption. The software format is compatible with the MAX512/MAX513 triple 8-bit DACs.
MAX522: Functional Diagram MAX522: Functional Diagram Enlarge+

Key Features

  • Operates from a Single +2.7V to +5.5V Supply
  • Dual Buffered Voltage Output
  • Low Power Consumption:
    • 1mA Operating Current
    • < 1µA Shutdown Current
  • Independently Programmable Shutdown Mode
  • 5MHz, 3-Wire Serial Interface
  • SPI, QSPI, and Microwire Compatible
  • Space-Saving 8-Pin SO Package


  • Digital Gain and Offset Control
  • Power-Amp Bias Control
  • Programmable Current Sources
  • Programmable Voltage Sources
  • VCO Tuning
Part NumberResolution
ChannelsOutput TypeReferenceINL
InterfaceSupply Range
Supply Range
Settling Time
Package/PinsOper. Temp.
maxminmaxmaxtypSee Notes
MAX522 82Voltage- BufferedExt.1.5Serial - SPI2.75.52.870
SOIC (N)/8
-40 to +85
0 to +70
$3.83 @1k
See All Precision DACs (251)
Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

Technical Documents

App Note 1071 DAC-Powered Charge Pump Varies Negative Rail

Quality and Environmental Data

Product Reliability Reports: MAX522.pdf 
Lead-Free Package Tin (Sn) Whisker Reports

CAD Symbols and Footprints

  • MAX5222EKA
  • MAX5222EKA+
  • MAX5222EKA+T
  • MAX5222EKA-T
  • MAX5222EKA-TG05
  • MAX5223EKA
  • MAX5223EKA+
  • MAX5223EKA+T
  • MAX5223EKA-T
  • MAX522CPA
  • MAX522CPA+
  • MAX522CSA
  • MAX522CSA+
  • MAX522CSA+T
  • MAX522CSA-T
  • MAX522EPA
  • MAX522EPA+
  • MAX522ESA
  • MAX522ESA+
  • MAX522ESA+T
  • MAX522ESA-T
  • Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C  

    Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

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