AD421BR Analog Devices Inc, AD421BR Datasheet - Page 2

• Manufacturer Part Number: AD421BR
• Description: Digital/Analog Converter IC Interface Type:Serial
• Manufacturer: Analog Devices Inc

Specifications of AD421BR

• Number Of Bits: 16
• Package/case: 16-SOIC-WIDE
• Leaded Process Compatible: No
• Features: Loop-Powered 4-20 MA DAC
• Linearity Error (inl): 0.01LSB
• Mounting Type: Surface Mount
• Rohs Status: RoHS non-compliant
• Settling Time: 8µs
• Data Interface: Serial
• Number Of Converters: 1
• Voltage Supply Source: Single Supply
• Power Dissipation (max): 1.95mW
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 16-SOIC (0.300", 7.5mm Width)
• Number Of Channels: 1
• Resolution: 16b
• Interface Type: Serial (3-Wire)
• Single Supply Voltage (typ): 3.3/5V
• Dual Supply Voltage (typ): Not RequiredV
• Architecture: Delta-Sigma
• Power Supply Requirement: Single
• Output Type: Current
• Single Supply Voltage (min): 2.95V
• Single Supply Voltage (max): 5.05V
• Dual Supply Voltage (min): Not RequiredV
• Dual Supply Voltage (max): Not RequiredV
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 16
• Package Type: SOIC W
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

DAC SPECIFICATIONS
Parameter
ACCURACY
VOLTAGE REFERENCE
DIGITAL INPUTS
POWER SUPPLIES
NOTES
1
2
3
4
5
Specifications subject to change without notice.
AD421–LOOP-POWERED SPECIFICATIONS
Parameter
OUTPUT CHARACTERISTICS
VOLTAGE REGULATOR
The DN25D is available from Supertex, Inc., 1350 Bordeaux Drive, Sunnyvale, CA 94089.
Temperature range is – 40°C to +85°C.
The max current loop voltage compliance is determined by the pass transistor breakdown voltage and is 350 V for the DN25D.
With V
supply sensitivity in moving from 5 V to 3 V by skewing the gain of the AD421.
100 kΩ resistor only required if this reference is being used in application circuits.
Resolution
Monotonicity
Integral Nonlinearity
Offset (4 mA) @ +25°C
Offset Drift
Total Output Error (20 mA) @ +25°C
Total Output Drift
V
REF OUT2
REF OUT1
REF IN
Operating Range
Quiescent Current
Current Loop Voltage Compliance
Full-Scale Settling Time
Output Impedance
AC Loop Voltage Sensitivity
Output Voltage (V
Externally Available Current
Line Regulation
Load Regulation
CC
3 V Mode
3.3 V Mode
5 V Mode
Output Voltage
Drift
Externally Available Current
V
Output Impedance
Noise (0.1 Hz–10 Hz)
Output Voltage
Drift
Externally Available Current
V
Output Impedance
Noise (0.1 Hz–10 Hz)
Input Resistance
V
V
I
I
Data Coding
Data Rate
@ V
@ V
IH
IL
CC
CC
IH
IL
CC
Supply Sensitivity
(Logic 0)
(Logic 1)
= 3 V, the transfer function shifts negative by typically 0.25%; a 16 kΩ resistor connected between COM and LOOPRTN will approximately compensate for the V
CC
CC
Supply Sensitivity
Supply Sensitivity
= 3 V
= 5 V
CC
)
4
3
4
3.25/3.35
4.95/5.05
B Versions
16
16
± 0.01
± 0.1
± 25
± 0.2
± 50
50
2.49/2.51
± 40
0.5
150
3
6
1.24/1.26
± 50
0.5
150
3
4
40
0.75 × V
0.25 × V
± 10
± 10
Binary
10
+2.95 to +5.05
650
750
V
350
8
25
2
2.95/3.05
3.25
1
15
B Versions
CC
(V
+ 2
CC
= +3 V to +5 V; REF IN = REF OUT2; T
CC
CC
2
2
Units
V min
V max
ms typ
MΩ typ
µA/V typ
V min/V max
V min/V max
V min/V max
mA min
µV/V typ
µV/mA typ
Units
Bits
Bits min
% of FS max
% of FS max
ppm of FS/°C max Includes On-Chip Reference Drift
% of FS max
ppm of FS/°C max Includes On-Chip Reference Drift
nA/mV max
V min/V max
ppm/°C max
mA min
µV/V max
Ω typ
µV (p-p) typ
V min/V max
ppm/°C max
mA min
µV/V max
Ω typ
µV (p-p) typ
kΩ typ
V min
V max
µA max
µA max
Mbps max
V min to V max
µA max
µA max
–2–
Conditions/Comments
FS = Full-Scale Output Current
V
V
25 nA/mV Typical
2.5 V Nominal
20 ppm/°C Typical from –40°C to +25°C and
–2.5 ppm/°C Typical from +25°C to +85°C
15 µV/V Typical
1.25 V Nominal, 100 kΩ Load to COM
20 ppm/°C Typical from –40°C to +25°C and
2 ppm/°C Typical from +25°C to +85°C
15 µV/V Typical
V
V
Functional to 7 V
475 µA Typical
575 µA Typical
Conditions/Comments
DN25D Breakdown Voltage
Settling Time to ± 0.1%, C1 = C2 = 10 nF, C3 = 3.3 nF
1200 Hz to 2200 Hz
3 V Nominal. LV Pin Connected to V
3.3 V Nominal. LV Pin Connected Through 0.01 µF to V
5 V Nominal. LV Pin Connected to COM
Assuming 4 mA Flowing in the Loop
CC
CC
IN
IN
= V
= 0 V
= 5 V
= 5 V
A
= T
CC
(Using DN25D
REF IN = REF OUT2; T
MIN
to T
MAX
unless otherwise noted)
1
as pass transistor as per Figure 3;
A
= T
MIN
to T
CC
MAX
5
unless otherwise noted)
REV. C
CC
CC