ADS8699IPWR datasheet(2/74 Pages) TI2

2 / 74 page

Table of Contents

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

2 Applications..................................................................... 1

3 Description.......................................................................1

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

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

6 Specifications.................................................................. 5

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

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

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

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

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

6.6 Timing Requirements: Conversion Cycle..................10

6.7 Timing Requirements: Asynchronous Reset.............10

6.8 Timing Requirements: SPI-Compatible Serial

Interface...................................................................... 10

6.9 Timing Requirements: Source-Synchronous

Serial Interface (External Clock)..................................11

6.10 Timing Requirements: Source-Synchronous

Serial Interface (Internal Clock)................................... 11

6.11 Timing Diagrams..................................................... 12

6.12 Typical Characteristics............................................ 15

7 Detailed Description......................................................22

7.1 Overview................................................................... 22

7.2 Functional Block Diagram......................................... 22

7.3 Feature Description...................................................23

7.4 Device Functional Modes..........................................35

7.5 Programming............................................................ 40

7.6 Register Maps...........................................................48

8 Application and Implementation.................................. 57

8.1 Application Information............................................. 57

8.2 Typical Application.................................................... 57

9 Power Supply Recommendations................................61

9.1 Power Supply Decoupling.........................................61

9.2 Power Saving............................................................61

10 Layout...........................................................................63

10.1 Layout Guidelines................................................... 63

10.2 Layout Example...................................................... 64

11 Device and Documentation Support..........................65

11.1 Documentation Support.......................................... 65

11.2 Receiving Notification of Documentation Updates.. 65

11.3 Support Resources................................................. 65

11.4 Trademarks............................................................. 65

11.5 Electrostatic Discharge Caution.............................. 65

11.6 Glossary.................................................................. 65

4 Revision History

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

Changes from Revision A (October 2018) to Revision B (March 2021)

Page

• Updated the numbering format for tables, figures, and cross-references throughout the document .................1

• Changed Applications section............................................................................................................................ 1

• Changed AIN_P, AIN_GND to GND specification in Absolute Maximum Ratings table .................................... 5

• Updated specification of Input Overvoltage Protection Circuit, VOVP parameter, to ±15 V for test condition

AVDD = floating.................................................................................................................................................. 6

• Changed Standard SPI Timing Protocol figures............................................................................................... 46

• Changed DEVICE_ADDR[3:0] type to R/W from R in DEVICE_ID_REG Register ......................................... 48

• Changed the description of PAR_EN bit in DATAOUT_CTL_REG Register ................................................... 52

Changes from Revision * (December 2016) to Revision A (October 2018)

Page

• Deleted per channel from ALARM → High, Low Threshold bullet in Features section...................................... 1

• Deleted WQFN package option from document................................................................................................. 1

• Deleted RUM (WQFN) information from Pin Configuration and Functions section............................................ 4

• Deleted offers a low impedance of 30 kΩ from footnotes 2 and 3 in Absolute Maximum Ratings table ........... 5

• Deleted RUM (WQFN) column from Thermal Information table......................................................................... 5

• Changed test conditions of Input Overvoltage Protection Circuit, VOVP parameter............................................6

• Deleted WQFN row from VREFIO and dVREFIO/dTA parameters..........................................................................6

• Deleted multichannel reference from Overview section................................................................................... 22

• Changed the input voltage range for each analog channel to the input voltage range in Analog Input Structure

section.............................................................................................................................................................. 23

• Changed Input Overvoltage Protection Limits When AVDD = 5 V table name from Input Overvoltage

Protection Limits When AVDD = 5 V or Offers a Low Impedance of 30 kΩ .....................................................23

• Changed AVDD is floating with an impedance 30 kΩ to AVDD is floating in Input Protection Circuit section.. 23

ADS8691, ADS8695, ADS8699

SBAS777B – DECEMBER 2016 – REVISED MARCH 2021

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