ADS1245

SBAS287A − JUNE 2003 − REVISED SEPTEMBER 2003

www.ti.com

2

ORDERING INFORMATION

PRODUCT

PACKAGE−LEAD

PACKAGE

DESIGNATOR(1)

SPECIFIED

TEMPERATURE

RANGE

PACKAGE

MARKING

ORDERING

NUMBER

TRANSPORT

MEDIA, QUANTITY

ADS1245

MSOP-10

DGS

−40

°C to +85°C

BHI

ADS1245IDGST

Tape and Reel, 250

ADS1245

MSOP-10

DGS

−40

°C to +85°C

BHI

ADS1245IDGSR

Tape and Reel, 2500

(1) For the most current specifications and package information, refer to our web site at www.ti.com.

ABSOLUTE MAXIMUM RATINGS

over operating free-air temperature range unless otherwise noted(1)

ADS1245

UNIT

AVDD to GND

−0.3 to +6

V

DVDD to GND

−0.3 to +3.6

V

Input Current

100, momentary

mA

Input Current

10, continuous

mA

Analog Input Voltage to GND

−0.5 to AVDD + 0.5

V

Analog Input Voltage to GND

−0.3 to DVDD + 0.3

V

Digital Output Voltage to GND

−0.3 to DVDD + 0.3

V

Maximum Junction Temperature

+150

°C

Operating Temperature Range

−40 to +85

°C

Storage Temperature Range

−60 to +150

°C

Lead Temperature (soldering, 10s)

+300

°C

(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.

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.

PIN ASSIGNMENTS

DGS PACKAGE

MSOP

(TOP VIEW)

1

2

3

4

5

10

9

8

7

6

CLK

SCLK

DRDY/DOUT

DVDD

AVDD

GND

VREFP

VREFN

AINN

AINP

ADS1245

Terminal Functions

TERMINAL

NAME

NO.

DESCRIPTION

GND

1

Analog and digital ground

VREFP

2

Positive reference input

VREFN

3

Negative reference input

AINN

4

Negative analog input

AINP

5

Positive analog input

AVDD

6

Analog power supply, 2.5V to 5.25V

DVDD

7

Digital power supply, 1.8V to 3.6V

DRDY/DOUT

8

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

9

Serial clock input: clocks out data on the

rising edge. Used to initiate calibration and

Sleep mode (see text for more details).

CLK

10

System clock input: typically 2.4576MHz