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OPA375, OPA2375

SBOS886C – NOVEMBER 2017 – REVISED JUNE 2020

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Product Folder Links: OPA375 OPA2375

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Copyright © 2017–2020, Texas Instruments Incorporated

Table of Contents

1

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

2

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

3

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

4

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

5

Device Comparison Table..................................... 3

6

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

7

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

7.1

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

7.2

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

7.3

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

7.4

Thermal Information for Single Channel ................... 6

7.5

Thermal Information for Dual Channel...................... 7

7.6

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

7.7

Typical Characteristics: OPA375 ............................ 11

7.8

Typical Characteristics: OPA2375 .......................... 19

8

Detailed Description ............................................ 26

8.1

Overview ................................................................. 26

8.2

Functional Block Diagram ....................................... 26

8.3

Feature Description................................................. 26

8.4

Device Functional Modes........................................ 31

9

Application and Implementation ........................ 32

9.1

Application Information............................................ 32

9.2

Single-Supply Electret Microphone Preamplifier With

Speech Filter ............................................................ 32

10

Power Supply Recommendations ..................... 35

11

Layout................................................................... 35

11.1

Layout Guidelines ................................................. 35

11.2

Layout Example .................................................... 36

12

Device and Documentation Support ................. 37

12.1

Device Support...................................................... 37

12.2

Related Links ........................................................ 37

12.3

Receiving Notification of Documentation Updates 37

12.4

Support Resources ............................................... 37

12.5

Trademarks ........................................................... 37

12.6

Electrostatic Discharge Caution ............................ 37

12.7

Glossary ................................................................ 37

13

Mechanical, Packaging, and Orderable

Information ........................................................... 37

4 Revision History

Changes from Revision B (January 2020) to Revision C

Page

•

Added TI.com URLs to Applications....................................................................................................................................... 1

•

Changed new package releases for OPA2375 in the Device Information table .................................................................... 1

•

Changed new package releases for OPA2375 in the Device Comparison Table section ..................................................... 3

•

Changed new package releases for OPA2375 in the Pin Configuration and Functions section ........................................... 4

•

Changed typical input current noise density value from 2 fA

√HZ to 23 fA√Hz ...................................................................... 8

•

Changed total supply voltage total from 5V to 5.5V in Electrical Characteristics condition statement .................................. 8

•

Deleted "Vs = 2.25 V to 5.5 V" test conditions for common-mode rejection ratio parameter in Electrical Characteristics .... 8

Changes from Revision A (January 2019) to Revision B

Page

•

Changed Low Broadband Noise specification in Features section to match OPA2375 specification ................................... 1

•

Added THD+N specification to Features section.................................................................................................................... 1

•

•

Added supply range definition for OPA2375 and OPA4375 in Features section ................................................................... 1

•

Changed Noise Spectral Density vs Frequency plot on front page to the OPA2375 noise plot ............................................ 1

•

Changed wording in Description section to reflect the whole OPAx375 family...................................................................... 1

•

Added OPA2375 devices to Device Information table ........................................................................................................... 1

•

Added Device Comparison Table section .............................................................................................................................. 3

•

Added pin out drawings for OPA2375 packages in Pin Configuration and Functions section............................................... 4

•

Added pin functions for OPA2375 packages.......................................................................................................................... 4

•

Added X2QFN Package Drawing and Pin Functions for OPA2375S in Pin Configuration and Functions section................ 5

•

Changed and combined the OPA375 and OPA2375 Absolute Maximum Ratings, ESD Ratings, Recommended

Operating Conditions, Thermal Information, and Electrical Characteristics in the Specifications section ............................. 6

•

Changed Human-body model (HBM) value from: ±1000 to ±3000 and Charged-device mode (CDM) value

from ±250 to ±1000 ................................................................................................................................................................ 6