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DS4426

Maxim Integrated Products
Part Number DS4426
Manufacturer Maxim Integrated Products
Description I2C-Margining IDACs
Published Jul 4, 2009
Detailed Description 19-4541; Rev 0; 4/09 www.DataSheet4U.com Quad-Channel, I2C-Margining IDACs with Three Channels of Power-Supply Trackin...
Datasheet PDF File DS4426 PDF File

DS4426
DS4426

Overview
19-4541; Rev 0; 4/09 www.
DataSheet4U.
com Quad-Channel, I2C-Margining IDACs with Three Channels of Power-Supply Tracking General Description The DS4426 contains four I2C-adjustable current DACs capable of sinking or sourcing current.
External resistors set the full-scale range of each output.
Each DAC output has 127 sink and 127 source steps that are programmed by the I2C interface.
Power-supply tracking functionality is provided for three channels using dedicated control inputs.
Once power-supply tracking is accomplished, the current outputs default to zero.
Two address pins allow up to four DS4426 devices to exist on the same I2C bus.
Features ♦ Four Current DACs 50µA to 200µA Adjustable Full-Scale Range 127 Settings Each for Sink and Source ♦ Power-Supply Tracking Power-Supply Sequencing Ramp-Up and Ramp-Down Tracking Control Ratiometric Tracking Support ♦ +2.
7V to +5.
5V Operation ♦ I2C-Compatible Serial Interface ♦ Two Address Input Pins Allow Up to Four Devices on Same I2C Bus ♦ Lead-Free, 28-Pin TQFN Package (4mm x 4mm) with Exposed Pad ♦ Industrial Temperature Range: -40°C to +85°C DS4426 Applications Power-Supply Adjustment Power-Supply Margining Power-Supply Tracking Adjustable Current Sink or Source Pin Configuration PART THR1 THR2 THR3 Ordering Information TEMP RANGE -40°C to +85°C -40°C to +85°C PIN-PACKAGE 28 TQFN-EP* 28 TQFN-EP* DS4426T+ DS4426T+T&R TOP VIEW 21 FS1 22 FS2 23 FS3 24 GAIN3 25 GAIN2 26 GAIN1 27 N.
C.
28 1 SDA FS0 INN3 16 20 19 18 17 15 14 13 12 INN2 INP2 INN1 INP1 A1 A0 GND INP3 DNC +Denotes a lead(Pb)-free/RoHS-compliant package.
T&R = Tape and reel.
*EP = Exposed pad.
DS4426 11 10 + 2 SCL 3 VCC 4 OUT0 5 OUT1 *EP 9 8 Functional Diagram appears at end of data sheet.
6 OUT2 7 OUT3 THIN QFN (4mm × 4mm) *EXPOSED PAD.
________________________________________________________________ Maxim Integrated Products 1 For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Max...


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