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DS4422

DS4422

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

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

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Overview

Description

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.
DS4422, DS4424: Typical Operating Circuit DS4422, DS4424: Typical Operating Circuit Enlarge+

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

Applications/Uses

  • Adjustable Current Sink or Source
  • Power-Supply Adjustment
  • Power-Supply Margining

Parametric Specs

Part NumberResolution
(bits)		ChannelsOutput TypeReferenceINL
(±LSB)		InterfaceSupply Range
(V)		Supply Range
(V)		ICC
(mA)		Package/PinsOper. Temp.
(°C)		Budgetary
Price
maxminmaxmaxSee Notes
DS4422 72Current- BufferedExt.1Serial - I2C2.75.50.25
TDFN/14
-40 to +85$0.76 @1k
DS4424 4
TDFN/14
$0.95 @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.

Design Resources


DS4424EVKIT: Evaluation Kit for the DS4422 and DS4424

Technical Documents

Tutorial 5036 Calibration Circuit Library
App Note 4280 Using the DS4424 to Margin the Output Voltage of a DC-DC Converter

Quality and Environmental Data

Product Reliability Reports: DS4422.pdf 
Lead-Free Package Tin (Sn) Whisker Reports

Quality And Environmental

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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Technical Docs

Reference Designs

Type ID Title
Evaluation Board8348DS4424EVKIT Evaluation Kit for the DS4422 and DS4424