参数资料
型号: EVAL-AD5421SDZ
厂商: Analog Devices Inc
文件页数: 32/36页
文件大小: 0K
描述: BOARD EVAL FOR AD5421
标准包装: 1
DAC 的数量: 1
位数: 16
数据接口: 串行,SPI?
设置时间: 50µs
DAC 型: 电压
工作温度: -40°C ~ 105°C
已供物品:
已用 IC / 零件: AD5421
Data Sheet
AD5421
Rev. G | Page 5 of 36
Parameter1
Min
Typ
Max
Unit
Test Conditions/Comments
Gain Error TC3
1
ppm FSR/°C
Full-Scale Error
0.047
+0.047
% FSR
0.028
±0.0017
+0.028
% FSR
TA = 25°C
Full-Scale Error TC3
1
ppm FSR/°C
Downscale Alarm Current
3.08
3.21
mA
Upscale Alarm Current
22.78
23
mA
4 mA to 20 mA and 3.8 mA to 21 mA
ranges
23.99
24.01
mA
3.2 mA to 24 mA range
OUTPUT CHARACTERISTICS3
Loop Compliance Voltage4
LOOP + 5.5
V
REGOUT < 5.5 V, loop current = 24 mA
LOOP + 12.5
V
REGOUT = 12 V, loop current = 24 mA
Loop Current Long-Term Stability
100
ppm FSR
Drift after 1000 hours at TA = 125°C,
loop current = 12 mA, internal RSET
15
ppm FSR
Drift after 1000 hours at TA = 125°C,
loop current = 12 mA, external RSET
Loop Current Error vs. REGOUT Load
Current
1.2
A/mA
Loop current = 12 mA, load current
from REGOUT = 5 mA
Resistive Load
0
2
k
See Figure 21 for a load line graph
Inductive Load
50
mH
Stable operation
Power Supply Sensitivity
0.1
A/V
Loop current = 12 mA
Output Impedance
12
400
M
Output TC
3
ppm FSR/°C
Loop current = 12 mA, internal RSET
1
ppm FSR/°C
Loop current = 12 mA, external RSET
Output Noise
0.1 Hz to 10 Hz
50
nA p-p
500 Hz to 10 kHz
0.2
mV rms
HART bandwidth; measured across
500 load
Noise Spectral Density
195
nA/√Hz
At 1 kHz
256
nA/√Hz
At 10 kHz
REFERENCE INPUT (REFIN PIN)3
Reference Input Voltage5
2.5
V
For specified performance
DC Input Impedance
75
800
M
REFERENCE OUTPUTS
REFOUT1 Pin
Output Voltage
2.498
2.5
2.503
V
TA = 25°C
Temperature Coefficient
1.5
4
ppm/°C
C grade
2
8
ppm/°C
B grade
4
10
ppm/°C
A grade
Output Noise (0.1 Hz to 10 Hz)3
7.5
V p-p
Noise Spectral Density3
245
nV/√Hz
At 1 kHz
70
nV/√Hz
At 10 kHz
Output Voltage Drift vs. Time3
200
ppm
Drift after 1000 hours at TA = 125°C
Capacitive Load3
10
nF
Recommended operation
Load Current3, 6
4
mA
Short-Circuit Current3
6.5
mA
Short circuit to COM
Power Supply Sensitivity3
2
12
V/V
Thermal Hysteresis3
285
ppm
First temperature cycle
5
ppm
Second temperature cycle
Load Regulation3
0.1
0.2
mV/mA
Measured at 0 mA and 1 mA loads
Output Impedance
0.1
REFOUT2 Pin
Output Voltage
1.18
1.227
1.28
V
TA = 25°C
Output Impedance
72
k
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