Datasheet

Data Sheet AD5122A/AD5142A
Rev. A | Page 15 of 32
–0.15
–0.10
–0.05
0
0.05
0.10
0.15
0
50
100
INL (LSB)
CODE (Decimal)
10kΩ, –40°C
10kΩ, +25°C
10kΩ, +125°C
100k
Ω, –40°C
100kΩ, +
2
5°C
100kΩ, +
125
°C
10939-012
Figure 12. INL vs. Code (AD5122A)
10939-013
AD5122A
AD5142A
CODE (Decimal)
0 50 10
0 150 200 255
0 25
50 75 100 12
7
–50
0
50
100
150
200
250
300
350
400
450
POTENTIOMETER MODE TEMPERATURE
COEFFICIENT (ppm/°C)
100kΩ
10kΩ
Figure 13. Potentiometer Mode Temperature Coefficient ((ΔV
W
/V
W
)/ΔT × 10
6
)
vs. Code
–40 10 60 125110
0
100
200
30
0
400
500
600
700
800
CURRENT (nA)
TEMPERATURE (°C)
I
DD
, V
DD
= 2
.3V
I
DD
, V
DD
= 3.3V
I
DD
, V
DD
= 5V
I
LOGIC
, V
LOGIC
= 2.3V
I
LOGIC
, V
LOGIC
= 3
.3V
I
LOGIC
, V
LOGIC
= 5
V
V
DD
= V
LOGIC
V
SS
= GND
10939-014
Figure 14. Supply Current vs. Temperature
–0.14
–0.12
–0.10
–0.08
–0.06
–0.04
–0.02
0
0.02
0.04
0.06
0
50 100
DNL (LSB)
CODE (Decimal)
10kΩ, –40°C
10kΩ, +25°C
10kΩ, +125°C
100kΩ, –40°C
100kΩ, +25°C
100kΩ, +125°C
10939-015
Figure 15. DNL vs. Code (AD5122A)
–50
0
50
100
150
200
250
300
350
400
450
RHEOSTAT MODE TEMPERATURE
COEFFICIENT (ppm/°C)
10kΩ
100
kΩ
10939-016
AD5122A
AD5142A
CODE (Decimal)
0 50 100 150 200 255
0 25 50 75 100 127
Figure 16. Rheostat Mode Temperature Coefficient ((ΔR
WB
/R
WB
)/ΔT × 10
6
)
vs. Code
10939-017
0
200
400
600
800
1000
1200
0 1 2
3
4 5
I
LOGIC
CURRENT (µA)
INPUT VOLTAGE
(V)
V
LOGIC
= 1.8V
V
LOGIC
= 2.3V
V
LOGIC
= 3.3V
V
LOGIC
= 5V
V
LOGIC
= 5.5V
Figure 17. I
LOGIC
Current vs. Digital Input Voltage