Datasheet

Data Sheet AD5121/AD5141
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
10940-018
Figure 14. INL vs. Code (AD5121)
–50
0
50
100
150
200
250
300
350
400
450
POTENTIOMETER MODE TEMPERATURE
COEFFICIENT (ppm/°C)
CODE (Decimal)
100kΩ
10kΩ
10940-019
0 50 100 150 200 255
0 25 50 75 100 127
AD5121
AD5141
Figure 15. Potentiometer Mode Temperature Coefficient ((ΔV
W
/V
W
)/ΔT × 10
6
)
vs. Code
10940-020
0
10
0
200
300
40
0
500
600
700
80
0
–40 10
60 1251
10
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
D
D
= V
LOGI
C
V
SS
= G
ND
Figure 16. 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
10940-021
Figure 17. DNL vs. Code (AD5121)
10940-122
–50
0
50
100
150
200
250
300
350
400
450
RH
EOST
AT M
ODE TEMPERAT
URE
CO
EFFIC
IEN
T (pp
m/°C
)
10kΩ
100kΩ
CODE (Decimal)
0 50 100 150 200 255
0 25 50 75 100 127
AD5122
AD5142
Figure 18. Rheostat Mode Temperature Coefficient ((ΔR
WB
/R
WB
)/ΔT × 10
6
)
vs. Code
10940-023
0
200
400
600
800
1000
1200
0 1 2 3 4 5
I
LOGIC
CURRENT (µA)
INPUT VOLTAGE (V)
I
2
C, V
LOGIC
= 1.8V
I
2
C, V
LOGIC
= 2.3V
I
2
C, V
LOGIC
= 3.3V
I
2
C, V
LOGIC
= 5V
I
2
C, V
LOGIC
= 5.5V
SPI, V
LOGIC
= 1.8V
SPI, V
LOGIC
= 2.3V
SPI, V
LOGIC
= 3.3V
SPI, V
LOGIC
= 5V
SPI, V
LOGIC
= 5.5V
Figure 19. I
LOGIC
Current vs. Digital Input Voltage