PAM8404 Datasheet, PDF (7/18 Pages) Power Analog Micoelectronics – 3W/CH Filterless Stereo Class-D Audio Amplifier

PAM8404
3W/CH Filterless Stereo Class-D Audio Amplifier
Typical Operating Characteristics (T_A=25°C)
QFN 4x4 20-Pin
Efficiency vs Output Power
100 ^{RL=8Ω, V = DD 5V, L =33μH}
90
80
70
60
50
40
30
20
10
0
200 400 600 800 1000 1200 1400 1600 1800
Output Pow er(mW)
THD+N vs Output Power
R
30
L⁼
8
Ω
,
Gain=23dB,
f=1kHz
10
VDD=5V
5
2
1
% _0.5
V_DD=3.6V
VDD =2 . 5 V
0.2
0.1
0.05
0.02
0.01
10m
20m
50m 100m 200m
W
500m 1
2
4
Efficiency vs Output Power
100 ^{RL=4Ω, V = DD 5V, L =33μH}
90
80
70
60
50
40
30
20
10
0
300 600 900 1200 1500 1800 2100 2400 2700 3000
Output Pow er(mW)
THD+N vs Output Power
R_L=4Ω, Gain=23dB, f=1kHz
30
VDD=5V
10
5
V_DD=3.6V
2
1
% 0.5
VDD =2 . 5 V
0.2
0.1
0.05
0.02
0.01
10 m
20 m
50 m 100m 200m
W
500m 1
2
4
THD+N vs Frequency
P_O=0.5W, R_L=8Ω, C_IN=1μF,Gain=23dB
30
20
10
5
2
1
%
0.5
V_DD =3. 6V
VDD =5 . 5 V
0.2
0.1
0.05
0.02
0.01
20
VDD =5V
50 100 200
500 1k
2k
Hz
5k 10k 20k
THD+N vs Frequency
P_O=0.5W, R_L=4Ω, C = _IN 1μF,Gain=23dB
30
20
10
5
2
1
%
0.5
V_DD =3. 6V
0.2
0.1
0.05 _VDD=5V
0.02
VDD =5 . 5 V
0.01
20
50 100 200
500 1k
2k
Hz
5k 10k 20k
Power Analog Microelectronics,Inc
www.poweranalog.com
7
03/2009 Rev 1.1