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MAX97003

High-Efficiency, Low-Noise Audio Subsystem

TABLE OF CONTENTS

General Description .. .. .. ... ... .. ... .. ... .. ... ... .. ... ... ... .. ... .. ... ... .. ... ... .. ... ... .. ... . 1

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

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

Simplified Block Diagram .. .. ... ... .. ... ... .. ... .. ... .. ... ... .. ... ... .. ... .. ... ... ... .. ... .. ... .. 1

Functional Diagram/Typical Application Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Absolute Maximum Ratings . .. ... ... .. .. ... ... .. ... .. ... ... .. ... ... .. ... ... .. ... ... .. ... .. ... ... . 7

Electrical Characteristics .. .. ... .. ... .. ... .. ... ... ... .. ... ... .. .. ... ... .. ... ... .. ... ... .. ... ... .. 7

Digital I/O Characteristics.. .. ... ... .. ... ... .. ... .. ... .. ... ... .. ... ... .. ... .. ... ... ... .. ... .. ... . 12

I2C Timing Characteristics .. .. ... ... .. ... ... .. ... .. ... .. ... ... .. ... ... .. ... .. ... ... ... .. ... .. ... 13

Typical Operating Characteristics . ... .. ... ... .. .. ... ... .. ... ... .. ... .. ... ... ... .. ... .. ... ... .. ... 14

Bump Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Bump Description.. .. ... ... .. ... ... .. ... .. ... .. ... ... .. ... ... .. ... .. ... ... ... .. ... .. ... ... .. .. 21

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

Signal Path ................................................................................ 22

Class D Speaker Amplifier .................................................................... 22

Ultra-Low EMI Filterless Output Stage......................................................... 23

Dynamic Range Compressor (DRC) .......................................................... 24

Expander ............................................................................... 25

Speaker Low-Power Mode.................................................................. 26

Distortion Limiter ......................................................................... 26

Headphone Amplifier ........................................................................ 26

DirectDrive .............................................................................. 26

Charge Pump ............................................................................ 27

Class H Operation ........................................................................ 28

Ground Sense ........................................................................... 28

Volume-Change Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Zero-Crossing Detection ................................................................... 28

Volume Slewing .......................................................................... 28

Enhanced Volume Smoothing ............................................................... 28

Volume Readback ........................................................................ 28

I2C Slave Address........................................................................... 28

Registers Map ........................................................................... 28

Volume Readback ...........................................................................30

Input Configuration .......................................................................... 31

Mixers .................................................................................... 32

Volume Control .............................................................................33