User guide
Pin Description
NAME PIN FUNCTION
SDA 1 I
2
C Serial Data. Input/output for I
2
C data.
SCL 2 I
2
C Serial Clock. Input for I
2
C clock.
FS1 3
FS0 5
Full-Scale Calibration Inputs. A resistor to ground on these pins determines the full-scale current
for each output. FS0 controls OUT0, FS1 controls OUT1.
GND 4 Ground
OUT0 6
OUT1 7
Current Outputs. Sinks or sources the current determined by the register settings and the
resistance connected to FS0 and FS1.
V
CC
8 Power Supply
DS4412
Dual-Channel, I
2
C Adjustable
Sink/Source Current DAC
4 _______________________________________________________________________________________
Typical Operating Characteristics
(Applies to OUT0 and OUT1. V
CC
= 2.7V to 5.0V, SDA = SCL = V
CC
, T
A
= +25°C, and no loads on OUT0, OUT1, FS0, or FS1, unless
otherwise noted.)
SUPPLY CURRENT
vs. TEMPERATURE
DS4412 toc02
TEMPERATURE (°C)
SUPPLY CURRENT (mA)
806040200-20
0.05
0.10
0.15
0.20
0.25
0.30
0.35
0
-40
V
CC
= 5.0V
V
CC
= 3.3V
V
CC
= 2.7V
DOES NOT INCLUDE CURRENT DRAWN BY
RESISTORS CONNECTED TO FS0 AND FS1.
VOLTCO (SOURCE)
DS4412 toc03
V
OUT
(V)
I
OUT
(mA)
4321
2.1
2.2
2.3
2.4
2.5
2.0
05
2.2kΩ LOAD ON FS0 AND FS1
SUPPLY CURRENT
vs. SUPPLY VOLTAGE
DS4412 toc01
SUPPLY VOLTAGE (V)
SUPPLY CURRENT (mA)
5.24.74.23.73.2
0.1
0.2
0.3
0.4
0.5
0
2.7
DOES NOT INCLUDE CURRENT DRAWN BY
RESISTORS CONNECTED TO FS0 AND FS1.
VOLTCO (SINK)
DS4412 toc04
V
OUT
(V)
I
OUT
(mA)
321
-2.4
-2.3
-2.2
-2.1
-2.0
-2.5
04
2.2kΩ LOAD ON FS0 AND FS1
TEMPERATURE COEFFICIENT
vs. SETTING (SOURCE)
DS4412 toc05
SETTING (DEC)
TEMPERATURE COEFFICIENT (°C/ppm)
105
10
20
30
40
50
60
70
80
0
015
+25°C TO -40°C
+25°C TO +85°C
RANGE FOR THE 0.5mA TO 2.0mA
CURRENT-SOURCE RANGE.
TEMPERATURE COEFFICIENT
vs. SETTING (SINK)
DS4412 toc06
SETTING (DEC)
TEMPERATURE COEFFICIENT (°C/ppm)
105
10
20
30
40
50
60
70
80
0
015
+25°C TO -40°C
+25°C TO +85°C
RANGE FOR THE 0.5mA TO 2.0mA
CURRENT-SOURCE RANGE.