ABSOLUTE MAXIMUM RATINGS(1)
ELECTROSTATIC
DISCHARGE SENSITIVITY
This integrated circuit can be damaged by ESD. Texas Instru-
ments recommends that all integrated circuits be handled with
appropriate precautions. Failure to observe proper handling
and installation procedures can cause damage.
AVDD to GND ....................................................................... –0.3V to +6V
DVDD to GND ................................................................... –0.3V to +3.6V
Input Current ............................................................... 100mA, Momentary
Input Current ................................................................ 10mA, Continuous
Analog Input Voltage to GND .............................. –0.5V to AVDD + 0.5V
Digital Input Voltage to GND ............................... –0.3V to DVDD + 0.3V
Digital Output Voltage to GND ............................. –0.3V to DVDD + 0.3V
Maximum Junction Temperature ................................................... +150°C
Operating Temperature Range ........................................–40°C to +85°C
Storage Temperature Range .........................................–60°C to +150°C
Lead Temperature (soldering, 10s) ............................................... +300°C
ESD damage can range from subtle performance degrada-
tion 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.
NOTE: (1) Stresses above those listed under “Absolute Maximum Ratings”
may cause permanent damage to the device. Exposure to absolute maximum
conditions for extended periods may affect device reliability.
DEMO BOARD ORDERING INFORMATION
PRODUCT
DESCRIPTION
ADS1244-EVM
ADS1244 Evaluation Module
PACKAGE/ORDERING INFORMATION
SPECIFIED
PACKAGE
DESIGNATOR(1)
TEMPERATURE
RANGE
PACKAGE
MARKING
ORDERING
NUMBER
TRANSPORT
MEDIA, QUANTITY
PRODUCT
PACKAGE-LEAD
ADS1244
MSOP-10
DGS
–40°C to +85°C
BHG
ADS1244IDGST
ADS1244IDGSR
Tape and Reel, 250
Tape and Reel, 2500
"
"
"
"
"
NOTE: (1) For the most current specifications and package information, refer to our web site at www.ti.com.
PIN DESCRIPTIONS
PIN CONFIGURATION
PIN
Top View
MSOP
NUMBER
NAME
GND
DESCRIPTION
1
2
3
4
5
6
7
8
Analog and Digital Ground
Positive Reference Input
Negative Reference Input
Negative Analog Input
Positive Analog Input
VREFP
VREFN
AINN
GND
VREFP
VREFN
AINN
1
2
3
4
5
10 CLK
9
8
7
6
SCLK
AINP
DRDY/DOUT
DVDD
AVDD
DVDD
Analog Power Supply, 2.5V to 5.25V
Digital Power Supply, 1.8V to 3.6V
DRDY/
DOUT
Dual-Purpose Output:
AINP
AVDD
Data Ready: Indicates valid data by going LOW.
Data Output: Outputs data, MSB first, on the first
rising edge of SCLK.
ADS1244
9
SCLK
CLK
Serial Clock Input: Clocks out data on the rising
edge. Used to initiate calibration and Sleep Mode,
see text for more details.
10
System Clock Input: Typically 2.4576MHz
ADS1244
2
SBAS273
www.ti.com
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