AD5421 Analog Devices, AD5421 Datasheet - Page 14

• Manufacturer Part Number: AD5421
• Description: 16-Bit, Serial Input, Loop-Powered, 4mA to 20mA DAC
• Manufacturer: Analog Devices

Specifications of AD5421

• Resolution (bits): 16bit
• Dac Settling Time: 50µs
• Max Pos Supply (v): +52V
• Single-supply: Yes
• Dac Type: Current Out
• Dac Input Format: SPI

AD5421
–0.01
–0.02
–0.03
–0.04
–0.05
–0.06
–0.01
–0.02
–0.03
–0.04
–0.05
–0.06
–0.1
–0.2
–0.3
–0.4
–0.5
0.04
0.03
0.02
0.01
0.04
0.03
0.02
0.01
0.5
0.4
0.3
0.2
0.1
Figure 12. Differential Nonlinearity Error vs. Temperature
0
–40
0
0
–40
–40
V
4mA TO 20mA RANGE
R
EXT NMOS
Figure 13. Total Unadjusted Error vs. Temperature
V
4mA TO 20mA RANGE
R
EXT NMOS
LOOP
LOOP
LOAD
LOAD
Figure 14. Full-Scale Error vs. Temperature
EXT V
EXT V
INT V
INT V
EXT V
EXT V
INT V
INT V
= 24V
= 250Ω
= 24V
= 250Ω
–15
–15
–15
REF
REF
REF
REF
REF
REF
REF
REF
, INT R
, EXT R
, INT R
, EXT R
, INT R
, EXT R
, INT R
, EXT R
10
10
10
TEMPERATURE (°C)
TEMPERATURE (°C)
TEMPERATURE (°C)
MAX DNL
MIN DNL
SET
SET
SET
SET
SET
SET
SET
SET
35
35
35
V
4mA TO 20mA RANGE
R
LOOP
LOAD
60
60
60
= 24V
= 250Ω
85
85
85
Rev. C | Page 14 of 36
–0.0002
–0.0004
–0.0006
0.0006
0.0004
0.0002
0.0029
0.0027
0.0025
0.0023
0.0021
0.0019
0.0017
0.0015
0.0024
0.0022
0.0020
0.0018
0.0016
0.0014
0.0012
0.0010
Figure 15. Integral Nonlinearity Error vs. Loop Supply Voltage
Figure 16. Total Unadjusted Error vs. Loop Supply Voltage
0
0
0
0
R
T
3.8mA TO 21mA RANGE
EXT V
EXT R
R
T
3.8mA TO 21mA RANGE
EXT V
EXT R
R
T
3.8mA TO 21mA RANGE
EXT V
EXT R
A
A
A
Figure 17. Offset Error vs. Loop Supply Voltage
LOAD
LOAD
LOAD
= 25°C
= 25°C
= 25°C
REF
SET
REF
SET
REF
SET
= 250Ω
= 250Ω
= 250Ω
10
10
10
LOOP SUPPLY VOLTAGE (V)
LOOP SUPPLY VOLTAGE (V)
LOOP SUPPLY VOLTAGE (V)
20
20
20
MAX INL
MIN INL
30
30
30
40
40
40
Data Sheet
50
50
50
60
60
60