DS4402_09 Datasheet, PDF (1/9 Pages) Maxim Integrated Products – Two/Four-Channel, I2C Adjustable Current DAC

19-4641; Rev 3; 5/09
Two/Four-Channel, I²C Adjustable Current DAC
General Description
The DS4402 and DS4404 contain two and four I²C
adjustable current DACs, respectively, that are each
capable of sinking or sourcing current. Each output has
31 sink and 31 source settings that are programmed by
the I²C interface. External resistors set the full-scale
range and step size of each output.
Applications
Power-Supply Adjustment
Power-Supply Margining
Adjustable Current Sink or Source
Pin Configuration
Features
♦ Two (DS4402) or Four (DS4404) Current DACs
♦ Full-Scale Range for Each DAC Determined by
External Resistors
♦ 31 Settings Each for Sink and Source Modes
♦ I²C-Compatible Serial Interface
♦ Two Three-Level Address Pins Allow Nine
Devices on Same I²C Bus
♦ Small Package (14-Pin TDFN)
♦ -40°C to +85°C Temperature Range
♦ 2.7V to 5.5V Operation
Ordering Information
TOP VIEW
SDA 1
SCL 2
GND 3
FS3 (N.C.) 4
FS2 (N.C.) 5
FS1 6
FS0 7
DS4404/
DS4402
*EP
14 OUT3 (N.C.)
13 V_CC
12 OUT2 (N.C.)
11 A1
10 OUT1
9 A0
8 OUT0
PART
TEMP RANGE
PIN-PACKAGE
DS4402N+
-40°C to +85°C
14 TDFN-EP*
DS4402N+T&R
-40°C to +85°C
14 TDFN-EP*
DS4404N+
-40°C to +85°C
14 TDFN-EP*
DS4404N+T&R
-40°C to +85°C
14 TDFN-EP*
+Denotes a lead(Pb)-free/RoHS-compliant package.
T&R = Tape and reel.
*EP = Exposed pad.
TDFN
(3mm × 3mm × 0.8mm)
*EXPOSED PAD
( ) INDICATES FOR DS4402 ONLY.
Typical Operating Circuit
V_CC
V_OUT0
V_OUT1
4.7kΩ
4.7kΩ
SDA
SCL
A1
A0
GND
V_CC
DS4402 OUT0
OUT1
OUT
DC/DC
CONVERTER
R_0A
FB
R_0B
OUT
DC/DC
CONVERTER
R_1A
FB
R_1B
FS0
FS1
R_FS0
R_FS1
______________________________________________ Maxim Integrated Products 1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.