12

,

Power Analog Microelectronics Inc

www.poweranalog.com

Notes

1. The AP AUX-0025 low pass filter is necessary for class-D amplifier measurement with AP analyzer .

2. Two 22µH inductors are used in series with load resistor to emulate the small speaker for effic iency

measurement.

Test Setup for Performance Testing(Class D)

AP System One

Generator

PAM8010 Demo Board

+OUT

Input

Load

AP

Low Pass

Filter

AUX-0025

AP System Two

Analyzer

GND

-OUT

VDD

Power Supply

Application Notice

should be connected with the speaker before it's

powered on, otherwise it will be damaged easily.

2.

When the PAM8010 works without LC filters,

it's better to add a ferrite chip bead at the outgoing

line of speaker for suppressing the possible

electromagnetic interference.

3.

The absolute maximum rating of the PAM8010

operation voltage is 6.0V. When the PAM8010 is

powered with 4 battery cells, it should be noted

that the voltage of 4 new dry or alkaline batteries is

over 6V, higher than its maximum operation

voltage, which probably

m a k e t h e d e v i c e d a m a g e d . T h e r e f o r e , i t ' s

recommended to use either 4 Ni-MH (Nickel Metal

Hydride) rechargeable batteries or 3 dry or alkaline

batteries.

4.

The input signal should not be too high, if too

high ,it will cause the clipping of output signal when

increasing the volume. Because the DC volume

control of the PAM8010 has big gain, it will make

the device damaged.

5.

When testing the PAM8010 without LC filters

b y using resistor instead of speaker as the output

load, the test results, e.g. THD or efficiency, will be

worse than those using speaker as load.

PAM8010

3W Stereo Class-D with

DC Volume, Headphone and Power Limit

05/2011 Rev1.0