User guide

DS4426
Quad-Channel, I
2
C-Margining IDACs with
Three Channels of Power-Supply Tracking
_______________________________________________________________________________________ 5
SUPPLY CURRENT
vs. SUPPLY VOLTAGE
DS4426 toc01
SUPPLY VOLTAGE (V)
SUPPLY CURRENT (μA)
5.04.53.0 3.5 4.0
425
450
475
500
525
550
575
600
400
2.5 5.5
SDA = SCL = THR[3:1] = V
CC
GAIN[3:1] = FS[3:0] = OUT[3:0] = OPEN
INP[3:1] = INN[3:1] = GND
SUPPLY CURRENT
vs. TEMPERATURE
DS4426 toc02
TEMPERATURE (°C)
SUPPLY CURRENT (μA)
8060-20 0 20 40
425
450
475
500
525
550
575
600
400
-40
SDA = SCL = THR[3:1] = V
CC
GAIN[3:1] = FS[3:0] = OUT[3:0] = OPEN
INP[3:1] = INN[3:1] = GND
V
CC
= +5.5V
V
CC
= +3.3V
V
CC
= +2.7V
VOLTCO (SOURCE)
DS4426 toc03
V
OUT
(V)
I
OUT
(μA)
4321
-225
-200
-175
-150
-250
05
SDA = SCL = THR[3:1] = V
CC
GAIN[3:1] = OPEN
INP[3:1] = INN[3:1] = GND
40kΩ LOAD ON FS[3:0].
V
CC
= +5.5V
VOLTCO (SINK)
DS4426 toc04
V
OUT
(V)
I
OUT
(μA)
3.53.02.52.01.51.00.5
175
200
225
250
150
0 4.0
SDA = SCL = THR[3:1] = V
CC
GAIN[3:1] = OPEN
INP[3:1] = INN[3:1] = GND
40kΩ LOAD ON FS[3:0].
V
CC
= +5.5V
TEMPERATURE COEFFICIENT
vs. SETTING (SOURCE)
DS4426 toc05
SETTING (DEC)
TEMPERATURE COEFFICIENT (°C/ppm)
125100755025
0
50
100
150
200
250
300
-50
0
RANGE FOR THE 50μA TO 200μA
CURRENT SOURCE RANGE
+25°C TO -40°C
+25°C TO +85°C
TEMPERATURE COEFFICIENT
vs. SETTING (SINK)
DS4426 toc06
SETTING (DEC)
TEMPERATURE COEFFICIENT (°C/ppm)
125100755025
-150
-50
50
150
250
350
450
550
650
-250
0
RANGE FOR THE 50μA TO 200μA
CURRENT SINK RANGE
+25°C TO -40°C
+25°C TO +85°C
INTEGRAL LINEARITY
DS4426 toc07
SETTING (DEC)
INL (LSB)
125100755025
-0.8
-0.6
-0.4
-0.2
0
0.2
0.4
0.6
0.8
1.0
-1.0
0
RANGE FOR THE 50μA TO 200μA
CURRENT SOURCE AND SINK RANGE
DIFFERENTIAL LINEARITY
DS4426 toc08
SETTING (DEC)
DNL (LSB)
125100755025
-0.8
-0.6
-0.4
-0.2
0
0.2
0.4
0.6
0.8
1.0
-1.0
0
RANGE FOR THE 50μA TO 200μA
CURRENT SOURCE AND SINK RANGE
Typical Operating Characteristics
(T
A
= +25°C, unless otherwise noted.)