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PDF AD5421 Datasheet ( Hoja de datos )

Número de pieza AD5421
Descripción 4mA to 20mA DAC
Fabricantes Analog Devices 
Logotipo Analog Devices Logotipo
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AD5421 datasheet

1 Page

AD5421 pdf
AD5421
Data Sheet
SPECIFICATIONS
Loop voltage = 24 V; REFIN = 2.5 V external; RL = 250 Ω; external NMOS connected; all loop current ranges; all specifications
TMIN to TMAX, unless otherwise noted.
Table 1.
Parameter1
ACCURACY, INTERNAL RSET
Resolution
Total Unadjusted Error (TUE)2
TUE Long-Term Stability
Relative Accuracy (INL)
Differential Nonlinearity (DNL)
Offset Error
Offset Error TC3
Gain Error
Gain Error TC3
Full-Scale Error
Full-Scale Error TC3
Downscale Alarm Current
Upscale Alarm Current
ACCURACY, EXTERNAL RSET (24 kΩ)
Resolution
Total Unadjusted Error (TUE)2
TUE Long-Term Stability
Relative Accuracy (INL)
Differential Nonlinearity (DNL)
Offset Error
Offset Error TC3
Gain Error
Min
16
−0.126
−0.041
−0.18
−0.06
−0.27
−0.08
−0.0035
−0.012
−0.024
−1
−0.056
−0.008
−0.11
−0.107
−0.035
−0.2
−0.126
−0.041
−0.25
3.19
22.77
23.97
16
−0.048
−0.027
−0.08
−0.04
−0.0035
−0.012
−1
−0.021
−0.007
−0.03
−0.023
Typ
±0.0064
±0.011
±0.011
210
±0.0015
±0.006
±0.01
±0.0008
±0.0008
1
±0.0058
±0.0058
4
±0.0065
±0.0065
5
±0.002
±0.003
40
±0.0015
±0.006
±0.0012
0.5
±0.0006
Max
+0.126
+0.041
+0.18
+0.06
+0.27
+0.08
+0.0035
+0.012
+0.024
+1
+0.056
+0.008
+0.11
+0.107
+0.035
+0.2
+0.126
+0.041
+0.25
3.21
22.83
24.03
+0.048
+0.027
+0.08
+0.04
+0.0035
+0.012
+1
+0.021
+0.007
+0.03
+0.023
Unit Test Conditions/Comments
Bits
% FSR
% FSR
% FSR
% FSR
% FSR
ppm FSR
% FSR
% FSR
% FSR
LSB
% FSR
% FSR
% FSR
ppm FSR/°C
% FSR
% FSR
% FSR
ppm FSR/°C
% FSR
% FSR
% FSR
ppm FSR/°C
mA
mA
mA
Bits
% FSR
% FSR
% FSR
% FSR
ppm FSR
% FSR
% FSR
LSB
% FSR
% FSR
ppm FSR/°C
% FSR
% FSR
C grade
C grade, TA = 25°C
B grade
B grade, TA = 25°C
A grade
A grade, TA = 25°C
Drift after 1000 hours at TA = 125°C
C grade
B grade
A grade
Guaranteed monotonic
B grade and C grade
B grade and C grade, TA = 25°C
A grade
B grade and C grade
B grade and C grade, TA = 25°C
A grade
B grade and C grade
B grade and C grade, TA = 25°C
A grade
4 mA to 20 mA and 3.8 mA to 21 mA
ranges
3.2 mA to 24 mA range
Assumes ideal resistor, B grade and
C grade only; not specified for A grade
C grade
C grade, TA = 25°C
B grade
B grade, TA = 25°C
Drift after 1000 hours at TA = 125°C
C grade
B grade
Guaranteed monotonic
TA = 25°C
TA = 25°C
Rev. H | Page 4 of 36

5 Page

AD5421 arduino
AD5421
Timing Diagrams
SCLK
SDIN
SDO
SYNC
LDAC
t12 t1
1 2 8 9 10 11 12 22 23 24
t3 t2
D23 D16 D15 D14 D13
t4
t6
t7
t8
D15 D14 D13
t11
D2 D1 D0
D2 D1
D0
t5
t13
t9 t10
Figure 2. Serial Interface Timing Diagram
Data Sheet
SCLK
SDIN
SDO
SYNC
1
89
24
D23 D16 D15
D0
INPUT WORD SPECIFIES REGISTER TO BE READ
UNDEFINED DATA
1 8 9 24
D23 D16 D15
D0
NOP OR REGISTER ADDRESS
D15 D0
SPECIFIED REGISTER DATA CLOCKED OUT
Figure 3. Readback Timing Diagram
200µA
IOL
TO OUTPUT
PIN CL
30pF
VOH (MIN) OR
VOL (MAX)
200µA
IOH
Figure 4. SDO Load Diagram
Rev. H | Page 10 of 36

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