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www.ti.com
SBAS287A − JUNE 2003 − REVISED SEPTEMBER 2003
ORDERING INFORMATION
SPECIFIED
TEMPERATURE
RANGE
PACKAGE
DESIGNATOR
PACKAGE
MARKING
ORDERING
NUMBER
TRANSPORT
MEDIA, QUANTITY
PRODUCT
PACKAGE−LEAD
(1)
ADS1245IDGST
ADS1245IDGSR
Tape and Reel, 250
Tape and Reel, 2500
ADS1245
MSOP-10
DGS
−40°C to +85°C
BHI
(1)
For the most current specifications and package information, refer to our web site at www.ti.com.
PIN ASSIGNMENTS
ABSOLUTE MAXIMUM RATINGS
over operating free-air temperature range unless otherwise noted
(1)
ADS1245
−0.3 to +6
UNIT
DGS PACKAGE
MSOP
(TOP VIEW)
AVDD to GND
V
V
DVDD to GND
−0.3 to +3.6
Input Current
100, momentary
10, continuous
−0.5 to AVDD + 0.5
−0.3 to DVDD + 0.3
−0.3 to DVDD + 0.3
+150
mA
mA
V
ADS1245
Input Current
CLK
GND
VREFP
VREFN
AINN
1
2
3
4
5
10
9
Analog Input Voltage to GND
Analog Input Voltage to GND
Digital Output Voltage to GND
Maximum Junction Temperature
Operating Temperature Range
Storage Temperature Range
Lead Temperature (soldering, 10s)
SCLK
V
V
8
DRDY/DOUT
DVDD
°C
°C
°C
°C
7
−40 to +85
AINP
6
AVDD
−60 to +150
+300
(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.
Terminal Functions
TERMINAL
This integrated circuit can be damaged by ESD. Texas
Instruments recommends that all integrated circuits be
handledwith appropriate precautions. Failure to observe
NAME
NO.
DESCRIPTION
GND
1
2
3
4
5
6
7
8
Analog and digital ground
Positive reference input
Negative reference input
Negative analog input
Positive analog input
proper handling and installation procedures can cause damage.
VREFP
VREFN
AINN
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.
AINP
AVDD
Analog power supply, 2.5V to 5.25V
Digital power supply, 1.8V to 3.6V
DVDD
DRDY/DOUT
Dual-purpose output:
Data ready: indicates valid data by going low.
Data output: outputs data, MSB first, on the
first rising edge of SCLK.
SCLK
CLK
9
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
2
BB [ BURR-BROWN CORPORATION ]
