AD7245A View Datasheet(PDF) - Analog Devices
Part Name
Description
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AD7245A Datasheet PDF : 16 Pages
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AD7245A/AD7248A
SWITCHING CHARACTERISTICS1 (VDD = +12 V to +15 V;2 VSS = O V or –12 V to –15 V;2 See Figures 5 and 7.)
Parameter
t1
@ +25°C
TMIN to TMAX
t2
@ +25°C
TMIN to TMAX
t3
@ +25°C
TMIN to TMAX
t4
@ +25°C
TMIN to TMAX
t5
@ +25°C
TMIN to TMAX
t6
@ +25°C
TMIN to TMAX
t7
@ +25°C
TMIN to TMAX
t8 (AD7245A only)
@ +25°C
TMIN to TMAX
A, B Versions
55
80
40
80
0
0
0
0
40
80
10
10
40
80
40
80
T Version
55
100
40
100
0
0
0
0
40
80
10
10
40
100
40
100
Units
ns typ
ns min
ns typ
ns min
ns min
ns min
ns min
ns min
ns typ
ns min
ns min
ns min
ns typ
ns min
ns typ
ns min
Conditions
Chip Select Pulse Width
Write Pulse Width
Chip Select to Write Setup Time
Chip Select to Write Hold Time
Data Valid to Write Setup Time
Data Valid to Write Hold Time
Load DAC Pulse Width
Clear Pulse Width
NOTES
1Sample tested at +25°C to ensure compliance.
2Power supply tolerance is ± 10% for A Version and ± 5% for B and T Versions.
ABSOLUTE MAXIMUM RATINGS1
VDD to AGND . . . . . . . . . . . . . . . . . . . . . . . . .–0.3 V to +17 V
VDD to DGND . . . . . . . . . . . . . . . . . . . . . . . . .–0.3 V to +17 V
VDD to VSS . . . . . . . . . . . . . . . . . . . . . . . . . . . .–0.3 V to +34 V
AGND to DGND . . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V, VDD
Digital Input Voltage to DGND . . . . . . . . –0.3 V, VDD +0.3 V
VOUT to AGND2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . VSS, VDD
VOUT to VSS2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 V, +24 V
VOUT to VDD2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –32 V, 0 V
REF OUT2 to AGND . . . . . . . . . . . . . . . . . . . . . . . . 0 V, VDD
Power Dissipation (Any Package) to +75°C . . . . . . . . 450 mW
Derates above +75°C by . . . . . . . . . . . . . . . . . . . . 6 mW/°C
Operating Temperature
Commercial (A, B Versions) . . . . . . . . . . . –40°C to +85°C
Extended (S Version) . . . . . . . . . . . . . . . –55°C to +125°C
Storage Temperature . . . . . . . . . . . . . . . . . . –65°C to +150°C
Lead Temperature (Soldering, 10 secs) . . . . . . . . . . . . +300°C
NOTES
1Stresses above those listed under “Absolute Maximum Ratings” may cause per-
manent damage to the device. This is a stress rating only and functional opera-
tion 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.
2The output may be shorted to voltages in this range provided the power dissipa-
tion of the package is not exceeded. VOUT short circuit current is typically
80 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 AD7245A/AD7248A 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 function-
ality.
WARNING!
ESD SENSITIVE DEVICE
REV. A
–3–
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