AD5421 データシートの表示（PDF） - Analog Devices
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AD5421 Datasheet PDF : 36 Pages
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AD5421
Data Sheet
Loop voltage = 24 V; REFIN = REFOUT1 (2.5 V internal reference); RL = 250 Ω; external NMOS connected; all loop current ranges;
all specifications TMIN to TMAX, unless otherwise noted.
Table 2.
Parameter1, 2
ACCURACY, INTERNAL RSET
Total Unadjusted Error (TUE)3
Relative Accuracy (INL)
Offset Error
Offset Error TC
Gain Error
Gain Error TC
Full-Scale Error
Full-Scale Error TC
ACCURACY, EXTERNAL RSET (24 kΩ)
Total Unadjusted Error (TUE)3
Relative Accuracy (INL)
Offset Error
Offset Error TC
Gain Error
Gain Error TC
Full-Scale Error
Full-Scale Error TC
Min
−0.157
−0.117
−0.004
−0.004
−0.04
−0.025
−0.128
−0.093
−0.157
−0.117
−0.133
−0.133
−0.004
−0.004
−0.029
−0.029
−0.11
−0.106
−0.133
−0.133
C Grade
Typ
Max
±0.0172
±0.0015
±0.0025
1
±0.0137
5
±0.0172
6
+0.157
+0.117
+0.004
+0.004
+0.04
+0.025
+0.128
+0.093
+0.157
+0.117
±0.0252
±0.0015
±0.0038
0.5
±0.0197
2
±0.0252
2
+0.133
+0.133
+0.004
+0.004
+0.029
+0.029
+0.11
+0.106
+0.133
+0.133
Unit
Test Conditions/Comments
% FSR
% FSR
% FSR
% FSR
% FSR
% FSR
ppm FSR/°C
% FSR
% FSR
ppm FSR/°C
% FSR
% FSR
ppm FSR/°C
% FSR
% FSR
% FSR
% FSR
% FSR
% FSR
ppm FSR/°C
% FSR
% FSR
ppm FSR/°C
% FSR
% FSR
ppm FSR/°C
TA = 25°C
TA = 25°C
TA = 25°C
TA = 25°C
TA = 25°C
Assumes ideal resistor
TA = 25°C
TA = 25°C
TA = 25°C
TA = 25°C
TA = 25°C
1 Temperature range: −40°C to +105°C; typical at +25°C.
2 Specifications guaranteed by design and characterization; not production tested.
3 Total unadjusted error is the total measured error (offset error + gain error + linearity error + output drift over temperature) after factory calibration of the AD5421.
System level total error can be reduced using the offset and gain registers.
Rev. H | Page 8 of 36
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