Datasheet

Data Sheet AD5421
Rev. G | Page 15 of 36
0.5
–0.5
–0.4
–0.3
–0.2
–0.1
0
0.1
0.2
0.3
0.4
–40
856035
MAX DNL
MIN DNL
10–15
DNL ERROR (LSB)
TEMPERATURE (°C)
V
LOOP
= 24V
4mA TO 20mA RANGE
R
LOAD
= 250Ω
09128-0
1
1
Figure 13. Differential Nonlinearity Error vs. Temperature
0.04
–0.06
–0.05
–0.04
–0.03
–0.02
–0.01
0
0.01
0.02
0.03
–40
85603510
–15
TOTAL UNADJUSTED ERROR (% FSR)
TEMPERATURE (°C)
EXT V
REF
, INT R
SET
EXT V
REF
, EXT R
SET
INT V
REF
, INT R
SET
INT V
REF
, EXT R
SET
V
LOOP
= 24V
4mA TO 20mA RANGE
R
LOAD
= 250Ω
EXT NMOS
09128-012
Figure 14. Total Unadjusted Error vs. Temperature
–40 85603510–15
FULL-SCALE ERROR (% FSR)
TEMPERATURE (°C)
EXT V
REF
, INT R
SET
EXT V
REF
, EXT R
SET
INT V
REF
, INT R
SET
INT V
REF
, EXT R
SET
V
LOOP
= 24V
4mA TO 20mA RANGE
R
LOAD
= 250Ω
EXT NMOS
09128-013
0.04
–0.06
–0.05
–0.04
–0.03
–0.02
–0.01
0
0.01
0.02
0.03
Figure 15. Full-Scale Error vs. Temperature
0.0006
–0.0006
–0.0004
–0.0002
0
0.0002
0.0004
0 6050
40
MAX INL
MIN INL
302010
INL ERROR (% FSR)
LOOP SUPPLY VOLTAGE (V)
R
LOAD
= 250Ω
T
A
= 25°C
3.8mA TO 21mA RANGE
EXT V
REF
EXT R
SET
09128-014
Figure 16. Integral Nonlinearity Error vs. Loop Supply Voltage
0.0029
0.0027
0.0025
0.0023
0.0021
0.0019
0.0017
0.0015
0
605040302010
TOTAL UNADJUSTED ERROR (% FSR)
LOOP SUPPLY VOLTAGE (V)
R
LOAD
= 250Ω
T
A
= 25°C
3.8mA TO 21mA RANGE
EXT V
REF
EXT R
SET
09128-015
Figure 17. Total Unadjusted Error vs. Loop Supply Voltage
0.0024
0.0022
0.0020
0.0018
0.0016
0.0014
0.0012
0.0010
0 605040302010
OFFSET ERROR (% FSR)
LOOP SUPPLY VOLTAGE (V)
R
LOAD
= 250Ω
T
A
= 25°C
3.8mA TO 21mA RANGE
EXT V
REF
EXT R
SET
09128-016
Figure 18. Offset Error vs. Loop Supply Voltage