Datasheet
AD7224
REV. B
–4–
ABSOLUTE MAXIMUM RATINGS
1
V
DD
to AGND . . . . . . . . . . . . . . . . . . . . . . . . . .–0.3 V, +17 V
V
DD
to DGND . . . . . . . . . . . . . . . . . . . . . . . . . .–0.3 V, +17 V
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
+ 0.3 V
V
OUT
to AGND
2
. . . . . . . . . . . . . . . . . . . . . . . . . . . . V
SS
, V
DD
Power Dissipation (Any Package) to +75°C . . . . . . . . 450 mW
Derates above 75°C by . . . . . . . . . . . . . . . . . . . . . 6 mW/°C
Operating Temperature
Commercial (K, L Versions) . . . . . . . . . . . –40°C to +85°C
Industrial (B, C Versions) . . . . . . . . . . . . . –40°C to +85°C
Extended (T, U Versions) . . . . . . . . . . . . –55°C to +125°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
permanent damage to the device. This is a stress rating only and 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
The outputs may be shorted to AGND provided that the power dissipation of the
package is not exceeded. Typically short circuit current to AGND is 60 mA.
ORDERING GUIDE
Total
Temperature Unadjusted Package
Model
1
Range Error (LSB) Option
2
AD7224KN –40°C to +85°C ±2 max N-18
AD7224LN –40°C to +85°C ±1 max N-18
AD7224KP –40°C to +85°C ±2 max P-20A
AD7224LP –40°C to +85°C ±1 max P-20A
AD7224KR-1 –40°C to +85°C ±2 max R-20
AD7224LR-1 –40°C to +85°C ±1 max R-20
AD7224KR-18 –40°C to +85°C ±2 max R-18
AD7224LR-18 –40°C to +85°C ±1 max R-18
AD7224BQ –40°C to +85°C ±2 max Q-18
AD7224CQ –40°C to +85°C ±1 max Q-18
AD7224TQ –55°C to +125°C ±2 max Q-18
AD7224UQ –55°C to +125°C ±1 max Q-18
AD7224TE –55°C to +125°C ±2 max E-20A
AD7224UE –55°C to +125°C ±1 max E-20A
NOTES
1
To order MIL-STD-883 processed parts, add /883B to part number.
Contact your local sales office for military data sheet.
2
E = Leadless Ceramic Chip Carrier; N = Plastic DIP;
P = Plastic Leaded Chip Carrier; Q = Cerdip; R = SOIC.
WARNING!
ESD SENSITIVE DEVICE
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 AD7224 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.
PIN CONFIGURATIONS
DIP and SOIC (SOIC) (SOIC)
V
SS
V
OUT
V
DD
RESET
DGND
(MSB) DB7
DB6
DB0 (LSB)
DB1
V
REF
AGND
LDAC
DB5 DB2
DB4 DB3
CS
WR
1
2
18
17
5
6
7
14
13
12
3
4
16
15
811
910
TOP VIEW
(Not to Scale)
AD7224
V
SS
V
OUT
V
DD
RESET
DGND
(MSB) DB7
DB6
DB0 (LSB)
DB1
V
REF
AGND
LDAC
DB5 DB2
DB4 DB3
CS
WR
1
2
18
17
5
6
7
14
13
12
3
4
16
15
811
9
10
TOP VIEW
(Not to Scale)
AD7224
R-18
NC = NO CONNECT
V
SS
V
OUT
V
DD
RESET
DGND
(MSB) DB7
DB6
CS
DB0 (LSB)
DB1
V
REF
AGND
LDAC
WR
DB5 DB2
DB4 DB3
NC NC
1
2
20
19
5
6
7
16
15
14
3
4
18
17
8
13
9
12
10
11
TOP VIEW
(Not to Scale)
AD7224
R-20
LCCC PLCC
NC = NO CONNECT
V
REF
AGND
DB6
DGND
(MSB) DB7
V
OUT
V
SS
RESET
NC
V
DD
DB5
DB4
DB2
NC
DB3
LDAC
WR
DB1
CS
DB0 (LSB)
193
1
220
4
5
8
6
7
12 1391110
18
17
14
16
15
TOP VIEW
(Not to Scale)
AD7224
NC = NO CONNECT
V
REF
AGND
DB6
DGND
(MSB) DB7
V
OUT
V
SS
RESET
NC
V
DD
DB5
DB4
DB2
NC
DB3
LDAC
WR
DB1
CS
DB0 (LSB)
1931220
4
5
8
6
7
12 139
11
10
18
17
14
16
15
TOP VIEW
(Not to Scale)
AD7224