Datasheet

ADS1244
2
SBAS273
www.ti.com
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.
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.
ABSOLUTE MAXIMUM RATINGS
(1)
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
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.
SPECIFIED
PACKAGE TEMPERATURE PACKAGE ORDERING TRANSPORT
PRODUCT PACKAGE-LEAD DESIGNATOR
(1)
RANGE MARKING NUMBER MEDIA, QUANTITY
ADS1244 MSOP-10 DGS –40°C to +85°C BHG ADS1244IDGST Tape and Reel, 250
" """"ADS1244IDGSR Tape and Reel, 2500
NOTE: (1) For the most current specifications and package information, refer to our web site at www.ti.com.
PACKAGE/ORDERING INFORMATION
PIN CONFIGURATION
PIN
NUMBER NAME DESCRIPTION
1 GND Analog and Digital Ground
2 VREFP Positive Reference Input
3 VREFN Negative Reference Input
4 AINN Negative Analog Input
5 AINP Positive Analog Input
6 AVDD Analog Power Supply, 2.5V to 5.25V
7 DVDD Digital Power Supply, 1.8V to 3.6V
8 DRDY/ Dual-Purpose Output:
DOUT Data Ready: Indicates valid data by going LOW.
Data Output: Outputs data, MSB first, on the first
rising edge of SCLK.
9 SCLK Serial Clock Input: Clocks out data on the rising
edge. Used to initiate calibration and Sleep Mode,
see text for more details.
10 CLK System Clock Input: Typically 2.4576MHz
PIN DESCRIPTIONS
Top View MSOP
1
2
3
4
5
10
9
8
7
6
CLK
SCLK
DRDY/DOUT
DVDD
AVDD
GND
VREFP
VREFN
AINN
AINP
ADS1244
PRODUCT DESCRIPTION
ADS1244-EVM ADS1244 Evaluation Module
DEMO BOARD ORDERING INFORMATION