3V/5V, 10-Bit, Serial Voltage-Output Dual DACs with Internal Reference

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The MAX5232/MAX5233 low-power, dual 10-bit voltage-output digital-to-analog converters (DACs) feature an internal 10ppm/°C precision bandgap voltage reference and precision output amplifiers. The MAX5233 operates on a single 5V supply with an internal 2.465V reference and features a 4.092V full-scale output range. The MAX5232 operates on a single 3V supply with an internal 1.234V reference and features a 2.046V full-scale output range. The MAX5233 consumes only 470µA while the MAX5232 consumes only 420µA of supply current. Both devices feature low-power (2µA) software- and hardware-enabled shutdown modes.

The MAX5232/MAX5233 feature a 13.5MHz SPI™-, QSPI™-, and MICROWIRE™-compatible 3-wire serial interface. An additional data output (DOUT) allows for daisy-chaining and read back. Each DAC has a double-buffered digital input. The MAX5232/MAX5233 feature two software-selectable shutdown output impedances: 1kΩ or 200kΩ. A power-up reset feature sets DAC outputs at ground or at the midscale DAC code.

The MAX5232/MAX5233 are specified over the extended temperature range (-40°C to +85°C) and are available in 16-pin QSOP packages.
MAX5232, MAX5233: Functional Diagram MAX5232, MAX5233: Functional Diagram Enlarge+

Key Features

  • Internal 10ppm/°C Precision Bandgap Reference
    • 2.465V (MAX5233)
    • 1.234V (MAX5232)
  • Single-Supply Operation
    • 5V (MAX5233)
    • 3V (MAX5232)
    • Low Supply Current
      • 470µA (MAX5233)
      • 420µA (MAX5232)
    • 13.5MHz SPI/QSPI/MICROWIRE-Compatible, 3-Wire Serial Interface
    • Pin-Programmable Power-Up Reset State to Zero or Midscale Output Voltage
    • Programmable Shutdown Modes with 1kΩ or 200kΩ Internal Output Loads
    • Recalls Output State Prior to Shutdown or Reset
    • Buffered Output Drives 5kΩ || 100pF Loads
    • Space-Saving 16-Pin QSOP Package


  • µP-Controlled Systems
  • Automated Test Equipment (ATE)
  • Digital Offset and Gain Adjustments
  • Industrial Process Controls
  • Motion Control

See parametric specs for Precision DACs (247)

Part NumberResolution
ChannelsOutput TypeReferenceINL
InterfaceSupply Range
Supply Range
Settling Time
Package/PinsOper. Temp.
maxminmaxmaxtypSee Notes
MAX5232 102Voltage- BufferedInt.0.5Serial - SPI2.73.60.47510
-40 to +85$4.58 @1k

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 3947 Daisy-Chaining SPI Devices
Request Reliability Report for: MAX5233 
Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C   Material Composition  

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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Related Resources

Type ID Title
App Note 3947 Daisy-Chaining SPI Devices