Datasheet

REV.
AD7226
–3–
SINGLE SUPPLY
Parameter K, B Versions
2
Unit Conditions/Comments
STATIC PERFORMANCE
Resolution 8 Bits
Total Unadjusted Error ± 2LSB max
Differential Nonlinearity ± 1LSB max Guaranteed Monotonic
REFERENCE INPUT
Input Resistance 2 kW min
Input Capacitance
3
50 pF min Occurs when each DAC is loaded with all 0s.
200 pF max Occurs when each DAC is loaded with all 1s.
DIGITAL INPUTS
Input High Voltage, V
INH
2.4 V min
Input Low Voltage, V
INL
0.8 V max
Input Leakage Current ± 1 mA max V
IN
= 0 V or V
DD
Input Capacitance 8 pF max
Input Coding Binary
DYNAMIC PERFORMANCE
Voltage Output Slew Rate
4
2V/ms min
Voltage Output Settling Time
4
4 ms max Settling Time to ± 1/2 LSB
Digital Crosstalk 10 nV secs typ
Minimum Load Resistance 2 kW min V
OUT
= +10 V
POWER SUPPLIES
V
DD
Range 14.25/15.75 V min/V max For Specified Performance
I
DD
13 mA max Outputs Unloaded; V
IN
= V
INL
or V
INH
NOTES
1
Maximum possible reference voltage.
2
Temperature ranges are as follows:
K Version: –40∞C to +85∞C
B Version: –40∞C to +85∞C
3
Guaranteed by design. Not production tested.
4
Sample Tested at 25∞C to ensure compliance.
Specifications subject to change without notice.
(V
DD
= 15 V  5%, V
SS
= AGND = DGND = O V; V
REF
= 10 V
1
unless otherwise noted.
All specifications T
MIN
to T
MAX
unless otherwise noted.)
ABSOLUTE MAXIMUM RATINGS
1
V
DD
to AGND . . . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V, +17 V
V
DD
to DGND . . . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V, +17 V
V
SS
to AGND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –7 V, V
DD
V
SS
to DGND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –7 V, V
DD
V
DD
to V
SS
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V, +24 V
AGND to DGND . . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V, V
DD
Digital Input Voltage to DGND . . . . . . . –0.3 V, V
DD
+ 0.3 V
V
REF
to AGND . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V, V
DD
V
OUT
to AGND
2
. . . . . . . . . . . . . . . . . . . . . . . . . . . . V
SS
, V
DD
Power Dissipation (Any Package) to 75∞C . . . . . . . . . . 500 mW
Derates above 75∞C by . . . . . . . . . . . . . . . . . . . . . 2.0 mW/∞C
Operating Temperature
Commercial (K Version) . . . . . . . . . . . . . . . –40∞C to +85∞C
Industrial (B Version) . . . . . . . . . . . . . . . . . –40∞C to +85∞C
Storage Temperature . . . . . . . . . . . . . . . . . . . –65∞C to +150∞C
Lead Temperature (Soldering, 10 secs) . . . . . . . . . . . . . 300∞C
NOTES
1
Stresses above those listed under Absolute Maximum Ratings may cause perma-
nent damage to the device. This is a stress rating only, functional operation of the
device at these or any other conditions above those indicated in the operational
sections of this specification is not implied. Exposure to absolute maximum rating
conditions for extended periods may affect device reliability.
2
Outputs may be shorted to AGND provided that the power dissipation of the
package is not exceeded. Typically short circuit current to AGND is 50 mA.
CAUTION
ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily
accumulate on the human body and test equipment and can discharge without detection. Although the
AD7226 features proprietary ESD protection circuitry, permanent damage may occur on devices
subjected to high energy electrostatic discharges. Therefore, proper ESD precautions are recommended
to avoid performance degradation or loss of functionality.
4
o
f
1
4
D