DS4422:Two-/Four-Channel, I²C, 7-Bit Sink/Source Current DAC

Low-Cost, Sink/Source Current DACs Simplify Power-Supply Margin Testing

The DS4422 and DS4424 contain two or four 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.

Key Features
  • Two (DS4422) or Four (DS4424) 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
  • Two Address Input Pins Allow Four Devices on Same I²C Bus
  • Low Cost
  • Small Package (14-Pin, 3mm x 3mm TDFN)
  • -40°C to +85°C Temperature Range
  • 2.7V to 5.5V Operating Range
DS4422, DS4424: Typical Operating Circuit
DS4422, DS4424: Typical Operating Circuit
Applications/Uses
  • Adjustable Current Sink or Source
  • Power-Supply Adjustment
  • Power-Supply Margining
DataSheet
titleDownload file
DS4422-DS4424 Data SheetDS4422-DS4424.pdf
Parametrics
Part NumberResolution
(bits)
ChannelsOutput TypeReferenceINL
(±LSB)
InterfaceSupply Range
(V)
Supply Range
(V)
ICC
(mA)
Package/PinsOper. Temp.
(°C)
Budgetary
Price
maxminmaxmaxSee Notes
DS442272Current- BufferedExt.1Serial - I2C2.75.50.25TDFN-EP/14-40 to +85$0.72 @1k
DS44244TDFN-EP/14$0.90 @1k
Design kits & evaluation modules
Quality and Environmental Data
Related Products
  • DS4412:Dual-Channel, I²C Adjustable Sink/Source Current DAC
  • DS4402:Two/Four-Channel, I²C Adjustable Current DAC
  • DS4404:Two/Four-Channel, I²C Adjustable Current DAC
Ordering Information
Part NumberStatusRecommended ReplacementPackageTempRoHS
DS4422EVKIT#ActiveEVKIT;-40°C to +85°CSee data sheet
DS4422N+ActiveTDFN-EP,;14 pin;9.6 mm²-40°C to +85°CLead Free
DS4422N+T&RActiveTDFN-EP,;14 pin;9.6 mm²-40°C to +85°CLead Free
DS4422-DS4424.pdf DS4424
Using the DS4424 to Margin the Output Voltage of a DC-DC Converter DS4424
DS4422.pdf DS4422
DS4422-DS4424.pdf DS4424