AS3418 datasheet(2/77 Pages) AMSCO

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AS3418

Content Guide

Datasheet

• PUBLIC

DS000507

• v4-00 • 2020-Jan-23

│ 2

Content Guide

General Description....................... 3

1.1

Key Benefits & Features .............................. 3

1.2

Applications .................................................. 4

1.3

Block Diagram .............................................. 4

Ordering Information..................... 5

Pin Assignment ............................. 6

3.1

Pin Diagram.................................................. 6

3.2

Pin Description ............................................. 6

Absolute Maximum Ratings.......... 9

Electrical Characteristics ............ 10

Functional Description ................ 12

6.1

Audio Line Input ......................................... 12

6.2

Microphone Inputs...................................... 13

6.3

Microphone Supply .................................... 19

6.4

Headphone Amplifier.................................. 21

6.5

Music Bypass Switch ................................. 25

6.6

Operational Amplifier.................................. 28

6.7

System ....................................................... 30

6.8

Operation Modes ....................................... 33

6.9

VNEG Charge Pump .................................... 38

6.10

EEPROM.................................................... 39

6.11

Production Trimming Interface................... 41

6.12

I2C Interface ............................................... 42

7.1

7.2

Detailed Register Description .................... 49

Application Information .............. 70

8.1

Schematic .................................................. 70

8.2

External Components ................................ 72

Package Drawings & Markings... 74

Revision Information................... 76

Legal Information ........................ 77

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