AD5421CREZ-RL7 View Datasheet(PDF) - Analog Devices
Part Name
Description
Manufacturer
AD5421CREZ-RL7 Datasheet PDF : 36 Pages
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AD5421
0.0015
0.0010
0.0005
RLOAD = 250Ω
TA = 25°C
3.8mA TO 21mA RANGE
EXT VREF
EXT RSET
0
–0.0005
–0.0010
–0.0015
–0.0020
–0.0025
0
10
20
30
40
50
60
LOOP SUPPLY VOLTAGE (V)
Figure 19. Gain Error vs. Loop Supply Voltage
0.0030
0.0025
0.0020
0.0015
0.0010
0.0005
RLOAD = 250Ω
TA = 25°C
0 3.8mA TO 21mA RANGE
EXT VREF
EXT RSET
–0.0005
0
10
20
30
40
50
60
LOOP SUPPLY VOLTAGE (V)
Figure 20. Full-Scale Error vs. Loop Supply Voltage
2000
1750
1500
TA = 25°C
EXT VREF
ILOOP = 24mA
EXT RSET
1250
1000
750
OPERATING AREA
500
250
0
0
10
20
30
40
50
LOOP SUPPLY VOLTAGE (V)
Figure 21. Load Resistance Load Line vs. Loop Supply Voltage
(Voltage Between LOOP− and REGIN)
Data Sheet
4.70
4.65
4.60
RLOAD = 250Ω
3.2mA TO 24mA RANGE
EXT VREF
ILOOP = 24mA
4.55
4.50
4.45
4.40
4.35
–40 –20
0
20
40
60
TEMPERATURE (°C)
80
100
Figure 22. Compliance Voltage Headroom vs. Temperature
7
VLOOP = 24V
EXT NMOS
6 RLOAD = 250Ω
TA = 25°C
ILOOP = 20mA
5
4
3
2
1
0
0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
REGOUT LOAD CURRENT (mA)
Figure 23. Loop Current Error vs. REGOUT Load Current
8
6
4
2
0
–2
–4
VLOOP = 24V
EXT NMOS
EXT VREF
–6
ILOOP = 4mA
RLOAD = 250Ω
TA = 25°C
–8
0 1 2 3 4 5 6 7 8 9 10
TIME (Seconds)
Figure 24. Loop Current Noise, 0.1 Hz to 10 Hz Bandwidth
Rev. H | Page 16 of 36
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