AD678
ABSOLUTE MAXIMUM RATINGS*
12/8
SC OE EOCEN SYNC
EOC
CS
With
Respect
AD678
Specification
To
Min Max
Units
CONTROL LOGIC
VOLTAGE
REF.
REF
OUT
DB11
12
VCC
VEE
VCC
VDD
AGND
AGND
VEE
DGND
DGND
AGND
DGND
DGND
–0.3 +18
V
V
V
V
V
V
V
V
REF
IN
DB2
–18
+0.3
OUTPUT
REGISTER
DB1
(R/L)
12
–0.3 +26.4
CONVERSION
LOGIC
12-BIT D/A
DB0
(HBE)
CONVERTER
0
+7
AGND
–1
VEE
+1
VCC
BIPOFF
V
V
V
CC
EE
DD
4
AIN, REFIN
Digital Inputs
Digital Outputs
Max Junction
Temperature
Operating Temperature
J and K Grades
A and B Grades
S and T Grades
Storage Temperature
Lead Temperature
(10 sec max)
4-BIT FLASH
A/D
CONVERTER
GAIN
STAGE
SAMPLE/
HOLD
–0.5 +7
–0.5 VDD + 0.3
AIN
DGND
AGND
175
°C
Functional Block Diagram
0
+70
+85
+125
+150
°C
°C
°C
°C
–40
–55
–65
+300
°C
*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.
ESD SENSITIVITY
The AD678 features input protection circuitry consisting of large “distributed” diodes and polysilicon
series resistors to dissipate both high energy discharges (Human Body Model) and fast, low energy
pulses (Charged Device Model). Per Method 3015.2 of MIL-STD-883C, the AD678 has been
classified as a Category 1 device.
WARNING!
Proper ESD precautions are strongly recommended to avoid functional damage or performance
degradation. Charges as high as 4000 volts readily accumulate on the human body and test equipment
and discharge without detection. Unused devices must be stored in conductive foam or shunts, and
the foam should be discharged to the destination socket before devices are removed. For further
information on ESD precautions, refer to Analog Devices’ ESD Prevention Manual.
ESD SENSITIVE DEVICE
ORDERING GUIDE
Model1
Package
Temperature Range
Tested and Specified
Package Option2
AD678JN
AD678KN
AD678JD
AD678KD
AD678AD
AD678BD
AD678AJ
AD678BJ
AD678SD
AD678TD
28-Lead Plastic DIP
28-Lead Plastic DIP
28-Lead Ceramic DIP
28-Lead Ceramic DIP
28-Lead Ceramic DIP
28-Lead Ceramic DIP
44-Lead Ceramic JLCC
44-Lead Ceramic JLCC
28-Lead Ceramic DIP
28-Lead Ceramic DIP
0°C to +70°C
AC
AC + DC
AC
AC + DC
AC
AC + DC
AC
AC + DC
AC
N-28
N-28
D-28
D-28
D-28
D-28
J-44
J-44
D-28
D-28
0°C to +70°C
0°C to +70°C
0°C to +70°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–55°C to +125°C
–55°C to +125°C
AC + DC
NOTES
1For details on grade and package offerings screened in accordance with MIL-STD-883, refer to Analog Devices Military Products Databook or /883 data sheet.
2N = Plastic DIP; D = Ceramic DIP; J = J-Leaded Ceramic Chip Carrier.
REV. C
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