Datasheet

AD5421 Data Sheet
Rev. G | Page 14 of 36
TYPICAL PERFORMANCE CHARACTERISTICS
1.0
–1.0
–0.8
–0.6
–0.4
–0.2
0
0.2
0.4
0.6
0.8
0
60k50k
40k30k
20k
10k
INL ERROR (LSB)
DAC CODE
V
LOOP
= 24V
EXT NMOS
R
LOAD
= 250Ω
T
A
= 25°C
4mA TO 20mA RANGE
EXT V
REF
EXT R
SET
09128-005
Figure 7. Integral Nonlinearity Error vs. Code
1.0
–1.0
–0.8
–0.6
–0.4
–0.2
0
0.2
0.4
0.6
0.8
0 60k50k40k30k20k10k
DNL ERROR (LSB)
DAC CODE
V
LOOP
= 24V
EXT NMOS
R
LOAD
= 250Ω
T
A
= 25°C
4mA TO 20mA RANGE
EXT V
REF
EXT R
SET
09128-006
Figure 8. Differential Nonlinearity Error vs. Code
0.01
–0.06
–0.05
–0.04
–0.03
–0.02
–0.01
0
0 60k50k40k30k20k10k
TOTAL UNADJUSTED ERROR (% FSR)
DAC CODE
09128-007
V
REF
EXT, R
SET
EXT, NMOS EXT, 24V
V
REF
EXT, R
SET
EXT, NMOS INT, 24V
V
REF
EXT, R
SET
EXT, NMOS INT, 52V
V
REF
INT, R
SET
INT, NMOS EXT, 24V
V
REF
INT, R
SET
INT, NMOS INT, 24V
V
REF
INT, R
SET
INT, NMOS INT, 52V
R
LOAD
= 250Ω
T
A
= 25°C
4mA TO 20mA RANGE
Figure 9. Total Unadjusted Error vs. Code
0.015
–0.010
–0.005
0
0.005
0.010
–40 856035
10
–15
OFFSET 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
09128-008
Figure 10. Offset Error vs. Temperature
0.03
–0.06
–0.05
–0.04
–0.03
–0.02
–0.01
0
0.01
0.02
–40 85603510–15
GAIN 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
09128-009
Figure 11. Gain Error vs. Temperature
0.0012
–0.0008
–0.0006
–0.0004
–0.0002
0
0.0002
0.0004
0.0006
0.0008
0.0010
–40 856035
MAX INL
MIN INL
10–15
INL 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
09128-010
Figure 12. Integral Nonlinearity Error vs. Temperature