Table of Contents

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

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

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

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

5 Pin Configuration and Functions...................................3

6 Specifications.................................................................. 6

6.1 Absolute Maximum Ratings........................................ 6

6.2 ESD Ratings............................................................... 6

6.3 Recommended Operating Conditions.........................6

6.4 Thermal Information: OPA1677.................................. 7

6.5 Thermal Information: OPA1678.................................. 7

6.6 Thermal Information: OPA1679.................................. 7

6.7 Electrical Characteristics.............................................8

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

7 Detailed Description......................................................14

7.1 Overview................................................................... 14

7.2 Functional Block Diagram......................................... 14

7.3 Feature Description...................................................14

7.4 Device Functional Modes..........................................17

8 Application and Implementation.................................. 18

8.1 Application Information............................................. 18

8.2 Typical Applications.................................................. 19

8.3 Power Supply Recommendations.............................25

8.4 Layout....................................................................... 25

9 Device and Documentation Support............................27

9.1 Device Support......................................................... 27

9.2 Documentation Support............................................ 28

9.3 Receiving Notification of Documentation Updates....28

9.4 Support Resources................................................... 28

9.5 Trademarks...............................................................28

9.6 Electrostatic Discharge Caution................................28

9.7 Glossary....................................................................28

10 Mechanical, Packaging, and Orderable

Information.................................................................... 28

4 Revision History

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

Changes from Revision D (December 2021) to Revision E (December 2022)

Page

• Change OPA1677 D (SOIC, 8) package from preview to production data (active)............................................ 1

Changes from Revision C (April 2019) to Revision D (December 2021)

Page

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

• Added OPA1677 production data (active) device and associated content......................................................... 1

Changes from Revision B (June 2018) to Revision C (April 2019)

Page

• Changed status of OPA1679 QFN package to production data......................................................................... 1

• Changed GPN BUF634A in Figure 8-6, Composite Headphone Amplifier (Single-Channel Shown) ..............24

Changes from Revision A (May 2018) to Revision B (June 2018)

Page

• Added content re: preview QFN (RUM) package............................................................................................... 1

Changes from Revision * (February 2017) to Revision A (May 2018)

Page

• Added DRG (SON) 8-pin package to Device Information table..........................................................................1

• Added SON-8 package to Features list.............................................................................................................. 1

• Added DRG (SON) 8-pin pinout drawing to Pin Configuration and Functions section....................................... 3

• Added thermal pad information to Pin Functions: OPA1678 table......................................................................3

OPA1677, OPA1678, OPA1679

SBOS855E – JANUARY 2017 – REVISED DECEMBER 2022

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