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AD5421 Fiches technique(PDF) 14 Page - Analog Devices

No de pièce AD5421
Description  16-Bit, Serial Input, Loop-Powered, 4 mA to 20 mA DAC
Download  36 Pages
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Fabricant  AD [Analog Devices]
Site Internet  http://www.analog.com
Logo AD - Analog Devices

AD5421 Fiches technique(HTML) 14 Page - Analog Devices

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AD5421
Data Sheet
Rev. F | 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
60k
50k
40k
30k
20k
10k
DAC CODE
VLOOP = 24V
EXT NMOS
RLOAD = 250Ω
TA = 25°C
4mA TO 20mA RANGE
EXT VREF
EXT RSET
Figure 6. 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
60k
50k
40k
30k
20k
10k
DAC CODE
VLOOP = 24V
EXT NMOS
RLOAD = 250Ω
TA = 25°C
4mA TO 20mA RANGE
EXT VREF
EXT RSET
Figure 7. Differential Nonlinearity Error vs. Code
0.01
–0.06
–0.05
–0.04
–0.03
–0.02
–0.01
0
0
60k
50k
40k
30k
20k
10k
DAC CODE
VREF EXT, RSET EXT, NMOS EXT, 24V
VREF EXT, RSET EXT, NMOS INT, 24V
VREF EXT, RSET EXT, NMOS INT, 52V
VREF INT, RSET INT, NMOS EXT, 24V
VREF INT, RSET INT, NMOS INT, 24V
VREF INT, RSET INT, NMOS INT, 52V
RLOAD = 250Ω
TA = 25°C
4mA TO 20mA RANGE
Figure 8. Total Unadjusted Error vs. Code
0.015
–0.010
–0.005
0
0.005
0.010
–40
85
60
35
10
–15
TEMPERATURE (°C)
EXT VREF, INT RSET
EXT VREF, EXT RSET
INT VREF, INT RSET
INT VREF, EXT RSET
VLOOP = 24V
4mA TO 20mA RANGE
RLOAD = 250Ω
EXT NMOS
Figure 9. Offset Error vs. Temperature
0.03
–0.06
–0.05
–0.04
–0.03
–0.02
–0.01
0
0.01
0.02
–40
85
60
35
10
–15
TEMPERATURE (°C)
EXT VREF, INT RSET
EXT VREF, EXT RSET
INT VREF, INT RSET
INT VREF, EXT RSET
VLOOP = 24V
4mA TO 20mA RANGE
RLOAD = 250Ω
EXT NMOS
Figure 10. 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
85
60
35
MAX INL
MIN INL
10
–15
TEMPERATURE (°C)
EXT VREF, INT RSET
EXT VREF, EXT RSET
INT VREF, INT RSET
INT VREF, EXT RSET
VLOOP = 24V
4mA TO 20mA RANGE
RLOAD = 250Ω
Figure 11. Integral Nonlinearity Error vs. Temperature


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