AD7801
TIMING CHARACTERISTICS
Parameter
t
1
t
2
t
3
t
4
t
5
t
6
t
7
t
8
0
0
20
15
4.5
20
20
20
1, 2
(V
DD
= +2.7 V to +5.5 V; GND = 0 V; Internal V
DD
/2 Reference. All specifications T
MIN
to T
MAX
unless otherwise noted.)
Units
ns min
ns min
ns min
ns min
ns min
ns min
ns min
ns min
Conditions/Comments
Chip Select to Write Setup Time
Chip Select to Write Hold Time
Write Pulse Width
Data Setup Time
Data Hold Time
Write to
LDAC
Setup Time
LDAC
Pulse Width
CLR
Pulse Width
Limit at T
MIN
, T
MAX
(B Version)
NOTES
1
Sample tested at +25°C to ensure compliance. All input signals are specified with tr = tf = 5 ns (10% to 90% of V
DD
) and timed from a voltage level of
(V
IL
+ V
IH
)/2. tr and tf should not exceed 1
µs
on any digital input.
2
See Figure 1.
ABSOLUTE MAXIMUM RATINGS*
(T
A
= +25°C unless otherwise noted)
ORDERING GUIDE
V
DD
to GND . . . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to +7 V
Reference Input Voltage to AGND . . . . –0.3 V to V
DD
+ 0.3 V
Digital Input Voltage to DGND . . . . . . –0.3 V to V
DD
+ 0.3 V
AGND to DGND . . . . . . . . . . . . . . . . . . . . . –0.3 V to +0.3 V
V
OUT
to AGND . . . . . . . . . . . . . . . . . . –0.3 V to V
DD
+ 0.3 V
Operating Temperature Range
Commercial (B Version) . . . . . . . . . . . . . –40°C to +105°C
Storage Temperature Range . . . . . . . . . . . . –65°C to +150°C
Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . . . +150°C
SSOP Package, Power Dissipation . . . . . . . . . . . . . . . 700 mW
θ
JA
Thermal Impedance . . . . . . . . . . . . . . . . . . . . 143°C/W
Lead Temperature, Soldering
Vapor Phase (60 sec) . . . . . . . . . . . . . . . . . . . . . . . +215°C
Infrared (15 sec) . . . . . . . . . . . . . . . . . . . . . . . . . . +220°C
SOIC Package, Power Dissipation . . . . . . . . . . . . . . . 870 mW
θ
JA
Thermal Impedance . . . . . . . . . . . . . . . . . . . . . 74°C/W
Lead Temperature, Soldering
Vapor Phase (60 sec) . . . . . . . . . . . . . . . . . . . . . . . +215°C
Infrared (15 sec) . . . . . . . . . . . . . . . . . . . . . . . . . . +220°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 listed in the operational
sections of this specification is not implied. Exposure to absolute maximum rating
conditions for extended periods may affect device reliability.
Model
AD7801BR
AD7801BRU
Temperature
Range
–40°C to +105°C
–40°C to +105°C
Package
Option*
R-20
RU-20
*R = Small Outline; RU = Thin Shrink Small Outline.
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 AD7801 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
REV. 0
–3–
AD [ ANALOG DEVICES ]
