PAM8407

Document number: DS36815 Rev. 1 - 2

1 of 12

www.diodes.com

January 2014

© Diodes Incorporated

PAM8407

A PRODUCT LINE OF

DIODES INCORPORATED

2x3W Stereo Differential Input Class D Audio Amplifier

with Up/Down Volume Control

Description

The PAM8407 is a filter-less Class-D amplifier with high SNR and

differential input that helps eliminate noise. Advanced 32-step

Up/Down volume control minimizes external components and allows

speaker volume control.

The PAM8407 supports 2.5V to 6V operation make it idea for up to 4

cells alkaline battery applications.

Features like greater than 87% efficiency and small PCB area make

the PAM8407 Class-D amplifier ideal for portable applications. The

output uses a filter-less architecture minimizing the number of

external components and PCB area whilst providing a high

performance, simple and lower cost system.

The PAM8407 built in auto recovery SCP (short circuit protection) and

thermal shutdown.

The PAM8407 is available in SO-16 package.

Features



3W Output at 10% THD with a 4Ω load and 5V Supply



2.4W Output at 1% THD with a 4Ω Load and 5V Supply



2.5V to 6.0V VDD Operating



Fully Differential Input



Filterless, Low Quiescent Current and Low EMI



Low THD+N



32-stepUp/Down Volume Control from -80dB to 24dB



Superior Low Noise: 60uV



Minimize Pop/Clip Noise



Auto Recovery Short Circuit Protection



Thermal Shutdown



Pb-Free SO-16 Package

Pin Assignments

SO-16

LOUTP

LOUTN

UP

VDD

ROUTP

VDD

ROUTN

GND

15

9

10

11

12

13

14

16

GND

RINN

GND

DOWN

LINN

SD

1

2

3

4

5

6

7

8

RINP

LINP

Applications



PC Speaker



Wireless Speaker



Home Sound Systems



Active Speakers



Docking stations

Typical Applications Circuit

6 GND

GND 13

5 DOWN

7 LINN

VDD 16

8 LINP

GND 12

1 RINP

ROUTN 14

2 RINN

ROUTP 15

LOUTP 10

VDD 9

4 UP

3 SD

LOUTN 11

PAM8407

01

.

uF

C6

4Ω

1uF

C2

RINN

01

. uF

C8

LINP

SHDN

ON

01

.

uF

C5

RINP

01

.

uF

C7

LINN

4Ω

1uF

C2