AD5421 Analog Devices, AD5421 Datasheet - Page 5

• 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
Parameter
REG
ADC ACCURACY
DV
DIGITAL INPUTS
DIGITAL OUTPUTS
FAULT THRESHOLDS
REFOUT2 Pin
Output Voltage
Output Voltage TC
Output Voltage Accuracy
Externally Available Current
Short-Circuit Current
Line Regulation
Load Regulation
Inductive Load
Capacitive Load
Die Temperature
V
Output Voltage
Externally Available Current
Short-Circuit Current
Load Regulation
Input High Voltage, V
Input Low Voltage, V
Hysteresis
Input Current
Pin Capacitance
SDO Pin
FAULT Pin
I
I
Temp 140°C
DD
LOOP
LOOP
LOOP
OUT
Output Voltage
Output Impedance
Output Low Voltage, V
Output High Voltage, V
High Impedance Leakage
High Impedance Output
Output Low Voltage, V
Output High Voltage, V
OUTPUT
Under
Over
OUTPUT
Current
Capacitance
Input
1
3
3
3
3
3
IL
IH
OL
OL
OH
OH
3, 6
3, 6
Min
1.18
1.8
−4
3.15
2
3.17
3.15
0.7 × IODV
−0.015
IODV
−0.01
IODV
DD
DD
− 0.5
− 0.5
DD
I
I
LOOP
LOOP
Typ
1.227
72
110
±2
23
500
10
8
50
10
±5
±1
3.3
7.7
45
0.21
0.63
1.46
5
5
133
− 0.01% FSR
+ 0.01% FSR
Rev. C | Page 5 of 36
0.25 × IODV
Max
1.28
12
+4
3.48
+0.015
0.4
+0.01
0.4
DD
Unit
V
V
ppm/°C
mA
mA
mV/V
mV/V
mV/mA
mH
μF
°C
mA
mA
mV/mA
V
V
V
V
pF
V
pF
V
mA
mA
°C
kΩ
%
%
V
V
μA
V
μA
V
Test Conditions/Comments
T
Voltage regulator output
See Table 10
Assuming 4 mA flowing in the loop
and during HART communications
Internal NMOS
External NMOS
Stable operation
Recommended operation
Can be overdriven up to 5.5 V
Assuming 4 mA flowing in the loop
and during HART communications
Measured at 0 mA and 3 mA loads
SCLK, SYNC , SDIN, LDAC
IODV
IODV
IODV
Per pin
Per pin
Fault removed when temperature
≤ 125°C
A
= 25°C
DD
DD
DD
= 1.8 V
= 3.3 V
= 5.5 V
AD5421