REV. E
AD7884/AD7885
–5–
ORDERING GUIDE
Linearity
Temperature Error SNR Package
Model Range (% FSR) (dB) Option
AD7884AP –40°C to +85°C84P-44A
AD7884BP –40°C to +85°C ± 0.0075 84 P-44A
AD7885AAP –40°C to +85°C84P-44A
AD7885ABP –40°C to +85°C ± 0.0075 84 P-44A
AD7884AQ –40°C to +85°C84Q-40
AD7884BQ –40°C to +85°C ± 0.0075 84 Q-40
AD7885JQ –40°C to +85°C82Q-28
AD7885AQ –40°C to +85°C84Q-28
AD7885BQ –40°C to +85°C ± 0.0075 84 Q-28
NOTE
P = Plastic Leaded Chip Carrier (PLCC); Q = CERDIP.
ABSOLUTE MAXIMUM RATINGS
1
V
DD
to AGND . . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to +7 V
AV
DD
to AGND . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to +7 V
V
SS
to AGND . . . . . . . . . . . . . . . . . . . . . . . . . +0.3 V to –7 V
AV
SS
to AGND . . . . . . . . . . . . . . . . . . . . . . . . +0.3 V to –7 V
AGND Pins to DGND . . . . . . . . . . . . –0.3 V to V
DD
+ 0.3 V
AV
DD
to V
DD
2
. . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to +7 V
AV
SS
to V
SS
2
. . . . . . . . . . . . . . . . . . . . . . . . . .+0.3 V to –7 V
GND to DGND . . . . . . . . . . . . . . . . . –0.3 V to V
DD
+ 0.3 V
V
IN
S, V
IN
F to AGND . . . . . . . . . . V
SS
– 0.3 V to V
DD
+ 0.3 V
V
REF+
to AGND . . . . . . . . . . . . . . V
SS
– 0.3 V to V
DD
+ 0.3 V
V
REF–
to AGND . . . . . . . . . . . . . . . V
SS
– 0.3 V to V
DD
+ 0.3 V
V
INV
to AGND . . . . . . . . . . . . . . . V
SS
– 0.3 V to V
DD
+ 0.3 V
Digital Inputs to DGND . . . . . . . . . . . –0.3 V to V
DD
+ 0.3 V
Digital Outputs to DGND . . . . . . . . . . –0.3 V to V
DD
+ 0.3 V
Operating Temperature Range
Commercial Plastic (A, B Versions) . . . . . –40°C to +85°C
Industrial CERDIP (J, A, B Versions) . . . . –40°C to +85°C
Storage Temperature Range . . . . . . . . . . . . –65°C to +150°C
Lead Temperature (Soldering, 10 sec) . . . . . . . . . . . . . 300°C
28-Lead CERDIP
θ
JA
Thermal Impedance . . . . . . . . . . . . . . . . . . . . 50.9°C/W
θ
JC
Thermal Impedance . . . . . . . . . . . . . . . . . . . . . 8.3°C/W
40-Lead CERDIP
θ
JA
Thermal Impedance . . . . . . . . . . . . . . . . . . . . 44.5°C/W
44-Lead PLCC
θ
JA
Thermal Impedance . . . . . . . . . . . . . . . . . . . . 47.7°C/W
θ
JC
Thermal Impedance . . . . . . . . . . . . . . . . . . . . 17.5°C/W
Power Dissipation (Any Package) to 75°C . . . . . . . . 1000 mW
Degradation above 75°C by . . . . . . . . . . . . . . . . . . 10 mW/°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 listed in the operational
sections of this specification is not implied. Exposure to absolute maximum rating
conditions for extended periods may affect device reliability.
2
If the AD7884/AD7885 is being powered from separate analog and digital
supplies, AV
SS
should always come up before V
SS
. See Figure 12 for a recom-
mended protection circuit using Schottky diodes.
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 AD7884/AD7885 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.
WARNING!
ESD SENSITIVE DEVICE
