Datasheet

ADS7863
www.ti.com SBAS383E –JUNE 2007–REVISED JANUARY 2011
RECOMMENDED OPERATING CONDITIONS
Over operating free-air temperature range, unless otherwise noted.
ADS7863
PARAMETER MIN NOM MAX UNIT
Supply voltage, AV
DD
to AGND 2.7 5.0 5.5 V
Low voltage levels 2.7 3.6
Supply voltage, BV
DD
to BGND V
5V logic levels 4.5 5.0 5.5
Reference input voltage on REF
IN
0.5 2.5 2.525 V
Analog differential input voltage (CHXX+) – (CHXX–) –V
REF
+V
REF
V
Operating ambient temperature range, T
A
–40 +125 °C
DISSIPATION RATINGS
DERATING FACTOR ABOVE T
A
≤ +25°C T
A
= +70°C T
A
= +85°C T
A
= +125°C
PACKAGE T
A
= +25°C POWER RATING POWER RATING POWER RATING POWER RATING
SSOP-24 10mW/°C 1250mW 800mW 650mW 250mW
QFN-24
22mW/°C 2740mW 1750mW 1420mW 540mW
(4mm × 4mm)
THERMAL CHARACTERISTICS
(1)
Over operating free-air temperature range, unless otherwise noted.
PARAMETER SSOP-24 QFN-24 UNIT
Low-K thermal resistance 99.8 45.6
q
JA
Junction-to-air thermal resistance °C/W
High-K thermal resistance 61.0 33.1
q
JC
Junction-to-case thermal resistance 23.3 35 °C/W
P
DISS
Device power dissipation at AV
DD
= 5V and BV
DD
= 3.3V 45.3 45.3 mW
(1) Tested in accordance with the Low-K or High-K thermal metric definitions of EIA/JESD51-3 for leaded surface-mount packages.
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