Rev 2; 10/08
2
Two/Four-Channel, I C Adjustable Current DAC
2/DS04
General Description
Features
♦ Two (DS4402) or Four (DS4404) Current DACs
2
The DS4402 and DS4404 contain two and four I C
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
♦ Full-Scale Range for Each DAC Determined by
External Resistors
♦ 31 Settings Each for Sink and Source Modes
2
the I C interface. External resistors set the full-scale
2
♦ I C-Compatible Serial Interface
range and step size of each output.
♦ Two Three-Level Address Pins Allow Nine
Applications
2
Devices on Same I C Bus
Power-Supply Adjustment
Power-Supply Margining
♦ Low Cost
♦ Small Package (14-Pin TDFN)
♦ -40°C to +85°C Temperature Range
♦ 2.7V to 5.5V Operation
Adjustable Current Sink or Source
Pin Configuration
TOP VIEW
Ordering Information
PART
TEMP RANGE
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
PIN-PACKAGE
14 TDFN-EP*
14 TDFN-EP*
14 TDFN-EP*
14 TDFN-EP*
14 OUT3 (N.C.)
13
12 OUT2 (N.C.)
11
10 OUT1
SDA
SCL
1
2
3
4
5
6
7
DS4402N+
V
CC
DS4402N+T&R
DS4404N+
GND
FS3 (N.C.)
FS2 (N.C.)
FS1
A1
DS4404N+T&R
DS4404/
DS4402
+Denotes a lead-free/RoHS-compliant package.
T&R = Tape and reel.
*EP = Exposed pad.
A0
9
8
*EP
FS0
OUT0
TDFN-EP
(3mm × 3mm × 0.8mm)
*EXPOSED PAD
( ) INDICATES FOR DS4402 ONLY.
Typical Operating Circuit
V
CC
V
OUT0
V
OUT1
OUT
OUT
4.7kΩ
4.7kΩ
V
CC
SDA
SCL
A1
DC/DC
CONVERTER
DC/DC
CONVERTER
R
0A
R
1A
FB
FB
OUT0
OUT1
DS4402
A0
R
0B
R
1B
GND
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.