SSM2380

Rev. A | Page 2 of 32

TABLE OF CONTENTS

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

 

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

 

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

 

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

 

Functional Block Diagram .............................................................. 3

 

Specifications..................................................................................... 4

 

I2C Timing Characteristics.......................................................... 5

 

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

 

Thermal Resistance ...................................................................... 6

 

ESD Caution.................................................................................. 6

 

Pin Configuration and Function Descriptions............................. 7

 

Typical Performance Characteristics ............................................. 8

 

Theory of Operation ...................................................................... 14

 

Overview...................................................................................... 14

 

Pop-and-Click Suppression....................................................... 14

 

Output Modulation Description .............................................. 14

 

Operating Modes........................................................................ 15

 

ALC Mode Operation ................................................................ 15

 

Gain Select Mode Operation .................................................... 16

 

I2C Control Mode Operation.................................................... 16

 

Automatic Level Control (ALC)............................................... 16

 

Mixer Mode................................................................................. 18

 

Applications Information .............................................................. 19

 

Layout .......................................................................................... 19

 

Input Capacitor Selection.......................................................... 19

 

Power Supply Decoupling ......................................................... 20

 

Typical Application Circuits ......................................................... 21

 

I2C Interface .................................................................................... 24

 

Register Map ................................................................................... 25

 

Register Map Details ...................................................................... 26

 

Register R0: Left Channel Gain Control, Address 0x00........ 26

 

Register R1: Right Channel Gain Control, Address 0x01..... 26

 

Register R2: Mode Control, Address 0x02.............................. 27

 

Register R3: ALC Control 1, Address 0x03............................. 27

 

Register R4: ALC Control 2, Address 0x04............................. 28

 

Register R5: Shutdown, Address 0x05..................................... 29

 

Register R6: Error, Address 0x06.............................................. 29

 

Register R7: Error Clear, Address 0x07 ................................... 29

 

Register R8: Reset, Address 0x08 ............................................. 29

 

Outline Dimensions ....................................................................... 30

 

Ordering Guide .......................................................................... 30

 

REVISION HISTORY

2/11—Rev. 0 to Rev. A

Changes to Setting the ALC Threshold Voltage Section........... 15

10/10—Revision 0: Initial Version