AD5421 Analog Devices, AD5421 Datasheet - Page 3

• 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

Data Sheet
SPECIFICATIONS
Loop voltage = 24 V; REFIN = 2.5 V external; R
T
Table 1.
Parameter
ACCURACY, INTERNAL R
ACCURACY, EXTERNAL R
MIN
Resolution
Total Unadjusted Error (TUE)
TUE Long-Term Stability
Relative Accuracy (INL)
Differential Nonlinearity (DNL)
Offset Error
Offset Error TC
Gain Error
Gain Error TC
Full-Scale Error
Full-Scale Error TC
Downscale Alarm Current
Upscale Alarm Current
Resolution
Total Unadjusted Error (TUE)
TUE Long-Term Stability
Relative Accuracy (INL)
Differential Nonlinearity (DNL)
Offset Error
Offset Error TC
Gain Error
to T
MAX
1
, unless otherwise noted.
3
3
3
3
SET
SET
(24 kΩ)
2
2
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
L
= 250 Ω; external NMOS connected; all loop current ranges; all specifications
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
Rev. C | Page 3 of 36
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
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
Test Conditions/Comments
C grade
C grade, T
B grade
B grade, T
A grade
A grade, T
Drift after 1000 hours at T
C grade
B grade
A grade
Guaranteed monotonic
B grade and C grade
B grade and C grade, T
A grade
B grade and C grade
B grade and C grade, T
A grade
B grade and C grade
B grade and C grade, T
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, T
B grade
B grade, T
Drift after 1000 hours at T
C grade
B grade
Guaranteed monotonic
T
T
A
A
= 25°C
= 25°C
A
A
A
A
A
= 25°C
= 25°C
= 25°C
= 25°C
= 25°C
A
A
A
= 25°C
= 25°C
= 25°C
AD5421
A
A
= 125°C
= 125°C