DS4422

PRODUCTION

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

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

Data Sheet (Rev. 2) Product Selection Table
Part Models
2
1ku List Price
Starting From $0.97
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Part Details

  • 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
Two-/Four-Channel, I²C, 7-Bit Sink/Source Current DAC
DS4422, DS4424: Typical Operating Circuit
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Documentation

Data Sheet 1

Reliability Data 1

Design Note 1

Technical Articles 1

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Software Resources

Device Drivers 1

Hardware Ecosystem

Parts Product Life Cycle Description
Current Source-Sink D/A Converters 3
DS4412
PRODUCTION Dual-Channel, I²C Adjustable Sink/Source Current DAC
DS4402
PRODUCTION Two/Four-Channel, I²C Adjustable Current DAC
DS4404
PRODUCTION Two/Four-Channel, I²C Adjustable Current DAC
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Tools & Simulations

Software Development 2

Evaluation Kits

eval board
schematic 1
DS4424EVKIT

Evaluation Kit for the DS4422 and DS4424

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Features and Benefits

  • Easy Evaluation of the DS4424
  • EV Kit Hardware is USB Powered
  • USB HID Interface
  • Windows XP®- and Windows® 7-Compatible Software
  • RoHS Compliant
  • Proven PCB Layout
  • Fully Assembled and Tested

Product Details

The DS4422 and DS4424 contain two or four I2C-programmable current DACs that are each capable of sinking and sourcing current up to 200µA.
The DS4424 evaluation kit (EV kit) provides the hardware and software graphical user interface (GUI) necessary to evaluate the DS4424 4-channel, 7-bit sink/source current DAC. The DS4422 has the same performance as the DS4424, except with only two channels.
The EV kit includes a DS4424 installed, as well as two populated full-scale calibration resistors (R3 and R4) and two unpopulated resistors (R5 and R6). This allows the device to be evaluated without any board rework on two channels but enables a custom-defined value to be populated on the two open channels. The EV kit also has the USB-to-I2C interface required to communicate to the device.

Applications

  • Adjustable Current Sink or Source
  • Power-Supply Adjustment
  • Power-Supply Margining
DS4424EVKIT
Evaluation Kit for the DS4422 and DS4424
DS4424EVKIT Hardware (USB Cable Not Included)

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