Datasheet

ADS7945

ADS7946

SBAS539B –JUNE 2011– REVISED SEPTEMBER 2011

www.ti.com

These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam

during storage or handling to prevent electrostatic damage to the MOS gates.

FAMILY AND ORDERING INFORMATION

(1)

PRODUCT RESOLUTION (Bits) INPUT

ADS7945 14 Unipolar, differential

ADS7946 14 Unipolar, single-ended

ADS7947 12 Unipolar, single-ended

ADS7948 10 Unipolar, single-ended

ADS7949 8 Unipolar, single-ended

(1) 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.

VALUE UNIT

AINxP to GND or AINxN to GND (ADS7945) –0.3 to AVDD + 0.3 V

AINx to GND (ADS7946) –0.3 to AVDD + 0.3 V

AINxGND to GND (ADS7946) –0.3 to +0.3 V

AVDD to GND or DVDD to GND –0.3 to 7 V

Digital input voltage to GND –0.3 to DVDD + 0.3 V

Digital output to GND –0.3 to DVDD + 0.3 V

Operating temperature range –40 to +125 °C

Storage temperature range –65 to +150 °C

Human body model (HBM) 2000 V

ESD ratings Charged device model (CDM) 500 V

Machine model (MM) 200 V

(1) Stresses beyond those listed under absolute maximum ratings may cause permanent damage to the device. These are stress ratings

only, and functional operation of the device at these or any other conditions beyond those indicated under electrical characteristics is not

implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

Product Folder Link(s): ADS7945 ADS7946