Datasheet

ADS7865
SBAS441C –OCTOBER 2008–REVISED APRIL 2012 www.ti.com
This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled with
appropriate precautions. Failure to observe proper handling and installation procedures can cause damage.
ESD damage can range from subtle performance degradation to complete device failure. Precision integrated circuits may be more
susceptible to damage because very small parametric changes could cause the device not to meet its published specifications.
ORDERING INFORMATION
For the most current package and ordering information, see the Package Option Addendum at the end of this
document, or visit the device product folder at www.ti.com.
ABSOLUTE MAXIMUM RATINGS
(1)
Over operating free-air temperature range, unless otherwise noted.
ADS7865 UNIT
Supply voltage, AV
DD
to AGND –0.3 to +6 V
Supply voltage, BV
DD
to BGND –0.3 to +6 V
Supply voltage, BV
DD
to AV
DD
1.5 × AVDD V
Analog and reference input voltage with respect to AGND AGND – 0.3 to AVDD + 0.3 V
Digital input voltage with respect to BGND BGND – 0.3 to BVDD + 0.3 V
Ground voltage difference |AGND – BGND| 0.3 V
Input current to all pins except power-supply pins –10 to +10 mA
Maximum virtual junction temperature, T
J
+150 °C
Human body model (HBM),
±4000 V
JEDEC standard 22, test method A114-C.01, all pins
ESD ratings
Charged device model (CDM),
±1500 V
JEDEC standard 22, test method C101, all pins
(1) Stresses above these ratings may cause permanent damage. Exposure to absolute maximum conditions for extended periods may
degrade device reliability. These are stress ratings only, and functional operation of the device at these or any other conditions beyond
those specified is not implied.
RECOMMENDED OPERATING CONDITIONS
Over operating free-air temperature range, unless otherwise noted.
ADS7865
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 V
Supply voltage, BV
DD
to BGND
5V logic levels 4.5 5.0 5.5 V
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
THERMAL CHARACTERISTICS
(1)
Over operating free-air temperature range, unless otherwise noted.
PARAMETER ADS7865 UNIT
θ
JA
Junction-to-air thermal resistance High-K thermal resistance 56.4 °C/W
θ
JC
Junction-to-case thermal resistance 20.8 °C/W
P
D
Device power dissipation at AVDD = 5V and BVDD = 3.3V 44 mW
(1) Tested in accordance with the High-K thermal metric definitions of EIA/JESD51-3 for leaded surface-mount packages with a 3×3 via
array.
2 Copyright © 2008–2012, Texas Instruments Incorporated