Sink/Source, Input/Output Current DAC Margining DS4424

Four Channel I2C Programmable Current DAC, 7 bit resolution. Input/Output DAC. Current margining. DS4422 DS4424

Notes

The DS4424 Current DAC IC contains four I2C programmable current DACs that are each capable of sinking or sourcing current up to 200μA. Each DAC output has 127 sink and 127 source settings that are programmed using the I2C interface. The current driven DAC outputs power up in a high-impedance state. The device is typically used for power supply margining or adjustment, for DAC controlled current sources or for maintaining a constant current source or sink

DS4422, DS4424 Key Features

  • Two Channel (DS4422) or Four Channel (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 Pins Allow Four Devices on Same I2C Bus
  • Low Cost
  • Small Package (14-Pin, 3mm x 3mm TDFN 0.4mm pitch)
  • -40°C to +85°C Temperature Range
  • 2.7V to 5.5V Operating Range

Sample Program for DS4424 I2C hosted on MAX32630FTHR (Mbed Hello World)

Import programDS4424_Hello_Current_DAC_on_MAX32630FTHR

Example host software for the Maxim Integrated DS4424/DS4422 I2C Sink/Source Current DAC. Hosted on the MAX32630FTHR.

Firmware/Software Driver Library C++ Code for DS4424, DS4422; includes methods for processed data (picoAmps)

Import libraryDS4424_SINK_SOURCE_CURRENT_DAC_INPUT_OUTPUT_DAC

Maxim Integrated 7-bit Sink/Source Current DAC. DS4424, DS4422 input/output current Digital-to-Analog Converter Driver/library code.


DS4424, DS4422 Linux C source code, IIO driver

ds4424.c

Pinouts: DS4424 EvKit to MAX32630FTHR

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Typical Applications Circuit

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Datasheet

Application Notes

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