Dual-Channel, I²C Adjustable Sink/Source Current DAC

Inexpensive Power-Supply Margining Made Easy

Please check latest availability status for a specific part variant.


The DS4432 contains two I²C programmable current DACs that are each capable of sinking and sourcing current up to 200µA. Each DAC output has 127 sink and 127 source settings that are programmed using the I²C interface. The current DAC outputs power up in a high-impedance state.
DS4432: Typical Operating Circuit DS4432: Typical Operating Circuit Enlarge+

Key Features

  • Two Current DACs
  • Full-Scale Current 50µA to 200µA
  • Full-Scale Range for Each DAC Determined by External Resistors
  • 127 Settings Each for Sink and Source Modes
  • I²C-Compatible Serial Interface
  • Low Cost
  • Small Package (8-Pin µSOP)
  • -40°C to +85°C Temperature Range
  • 2.7V to 5.5V Operating Range


  • Adjustable Current Sink or Source
  • Power-Supply Adjustment
  • Power-Supply Margining
Part NumberResolution
ChannelsOutput TypeReferenceINL
InterfaceSupply Range
Supply Range
Package/PinsOper. Temp.
maxminmaxmaxSee Notes
DS4432 72Current- BufferedExt.1Serial - I2C2.75.50.15
-40 to +85$0.62 @1k
See All Precision DACs (249)
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 5058 5A Step-Down Regulator Has I²C-Programmable Voltage Output

Quality and Environmental Data

Product Reliability Reports: DS4432.pdf 
Lead-Free Package Tin (Sn) Whisker Reports

Tools & Models

  • DS4432 IBIS Model
  • 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.

    Quality Management System >
    Environmental Management System >


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