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ADS1018

SBAS526D – NOVEMBER 2012 – REVISED SEPTEMBER 2019

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Copyright © 2012–2019, Texas Instruments Incorporated

Table of Contents

1

Features .................................................................. 1

2

Applications ........................................................... 1

3

Description ............................................................. 1

4

Revision History..................................................... 2

5

Device Comparison Table..................................... 4

6

Pin Configuration and Functions ......................... 4

7

Specifications......................................................... 5

7.1

Absolute Maximum Ratings ...................................... 5

7.2

ESD Ratings.............................................................. 5

7.3

Recommended Operating Conditions ....................... 5

7.4

Thermal Information .................................................. 5

7.5

Electrical Characteristics........................................... 6

7.6

Timing Requirements: Serial Interface...................... 8

7.7

Switching Characteristics: Serial Interface................ 8

7.8

Typical Characteristics .............................................. 9

8

Detailed Description ............................................ 10

8.1

Overview ................................................................. 10

8.2

Functional Block Diagram ....................................... 10

8.3

Feature Description................................................. 11

8.4

Device Functional Modes........................................ 15

8.5

Programming........................................................... 16

8.6

Register Maps ......................................................... 19

9

Application and Implementation ........................ 21

9.1

Application Information............................................ 21

9.2

Typical Application ................................................. 26

10

Power Supply Recommendations ..................... 29

10.1

Power-Supply Sequencing.................................... 29

10.2

Power-Supply Decoupling..................................... 29

11

Layout................................................................... 30

11.1

Layout Guidelines ................................................. 30

11.2

Layout Example .................................................... 31

12

Device and Documentation Support ................. 32

12.1

Documentation Support ........................................ 32

12.2

Receiving Notification of Documentation Updates 32

12.3

Community Resources.......................................... 32

12.4

Trademarks ........................................................... 32

12.5

Electrostatic Discharge Caution ............................ 32

12.6

Glossary ................................................................ 32

13

Mechanical, Packaging, and Orderable

Information ........................................................... 32

4 Revision History

NOTE: Page numbers for previous revisions may differ from page numbers in the current version.

Changes from Revision C (November 2015) to Revision D

Page

•

Changed maximum VDD voltage from 5.5 V to 7 V in the Absolute Maximum Ratings table ............................................... 5

•

Changed bit description of Config Register bit 0 .................................................................................................................. 20

Changes from Revision B (October 2013) to Revision C

Page

•

Added ESD Ratings table, Feature Description section, Noise Performance section, Device Functional Modes

section, Application and Implementation section, Power Supply Recommendations section, Layout section, Device

and Documentation Support section, and Mechanical, Packaging, and Orderable Information section .............................. 1

•

Changed title, Description section, Features section, and block diagram on front page ....................................................... 1

•

Changed title from Product Family to Device Comparison Table and deleted Package Designator column ........................ 4

•

Updated descriptions and changed name of I/O column in Pin Configurations and Functions table .................................... 4

•

Changed digital input voltage range and added minimum specification for TJ in Absolute Maximum Ratings table............. 5

•

Added Differential input impedance specification in Electrical Characteristics ...................................................................... 6

•

Changed Condition statement in Timing Requirements: Serial Interface ............................................................................. 8

•

Moved tCSDOD, tDOPD, and tCSDOZ parameters from Timing Requirements to Switching Characteristics ................................ 8

•

Moved tCSDOD and tCSDOZ values from MIN column to MAX column. ...................................................................................... 8

•

Deleted Figure 7, Noise Plot................................................................................................................................................... 9

•

Updated Overview section and deleted "Gain = 2/3, 1, 2, 4, 8, or 16" from Functional Block Diagram ............................. 10

•

Updated Analog Inputs section............................................................................................................................................. 12

•

Updated Full-Scale Range (FSR) and LSB Size section ..................................................................................................... 13

•

Updated Reset and Power Up section ................................................................................................................................. 15

•

Updated 32-Bit Data Transmission Cycle section ................................................................................................................ 18

•

Updated Register Maps section ........................................................................................................................................... 19

•

Updated Application Information section .............................................................................................................................. 21