AD9245 Просмотр технического описания (PDF) - Analog Devices
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AD9245 Datasheet PDF : 32 Pages
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ABSOLUTE MAXIMUM RATINGS
Table 7.
Parameter With Respect to Min Max
Unit
ELECTRICAL
AVDD
AGND
–0.3 +3.9
V
DRVDD
DGND
–0.3 +3.9
V
AGND
DGND
–0.3 +0.3
V
AVDD
DRVDD
–3.9 +3.9
V
D0 to D13 DGND
–0.3 DRVDD + 0.3 V
CLK, MODE AGND
–0.3 AVDD + 0.3 V
VIN+, VIN– AGND
–0.3 AVDD + 0.3 V
VREF
AGND
–0.3 AVDD + 0.3 V
SENSE
AGND
–0.3 AVDD + 0.3 V
REFT, REFB AGND
–0.3 AVDD + 0.3 V
PDWN
AGND
–0.3 AVDD + 0.3 V
ENVIRONMENTAL
Storage Temperature Range
–65 +125
°C
Operating Temperature Range –40 +85
°C
Lead Temperature
(Soldering 10 sec)
300
°C
Junction Temperature
150
°C
Stresses above those listed under Absolute Maximum Ratings
may cause permanent 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
section of this specification is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect
device reliability.
AD9245
THERMAL RESISTANCE
θJA is specified for the worst-case conditions on a 4-layer board
in still air, in accordance with EIA/JESD51-1.
Table 8. Thermal Resistance
Package Type
θJA
32-Lead LFCSP
32.5
θJC
32.71
Unit
°C/W
Airflow increases heat dissipation, effectively reducing θJA.
In addition, more metal directly in contact with the package
leads from metal traces, through holes, ground, and power
planes reduces the θJA. It is recommended that the exposed
paddle be soldered to the ground plane for the LFCSP package.
There is an increased reliability of the solder joints, and
maximum thermal capability of the package is achieved with
the exposed paddle soldered to the customer board.
ESD 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 this product 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.
Rev. D | Page 9 of 32
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