PAM8404
3W/CH Filterless Stereo Class-D Audio Amplifier
Typical Operating Characteristics (TA=25°C)
WCPS 2x2-16
THD+N vs Frequency
VDD=5V, RL=8Ω, CIN=1μF, Gain=23dB
THD+N vs Frequency
VDD=5V, RL=4Ω, CIN=1μF, Gain=23dB
30
30
20
20
10
5
10
5
PO=1.2W
PO=1.8W
PO=1W
2
1
2
1
%
%
0.5
0. 5
0.2
0.1
0. 2
0. 1
PO=0.5W
PO=0.5W
PO=1.2W
0. 05
0. 0 5
0. 02
0. 01
0. 0 2
0. 0 1
20
50
100
200
500
Hz
1k
2k
5k
10k
20k
20
50
100
200
500
Hz
1k
2k
5k
10k 20k
Frequency Response
VDD=5V, RL=4Ω, CIN=1μF
PSSR vs Frequency
Input ac-ground, VDD=5V 200mVpp,
RL=4Ω, CIN=1μF, gain=5dB
+0
-10
-20
-30
-40
-50
-60
-70
-80
-90
+2 5
G0=1 G1=1
+2 2.5
+2 0
+1 7.5
+1 5
+1 2.5
+1 0
+7.5
+5
G0=0 G1=1
G0=1 G1=0
R
d
B
r
d
B
A
L
G0=0 G1=0
+2.5
+0
20
-100
20
50
100
200
500
Hz
1k
2k
5k
10k
20k
50
100
200
500
Hz
1k
2k
5k
10k 20k
Crosstalk vs Frequency
VDD=5V, RL=4Ω, Gain=23dB
Noise Floor FFT
Inputs ac-ground, VDD=5V, CIN=1μF, RL=4Ω,
Gain=23dB
-50
-60
-50
-55
-60
-65
-70
-75
-80
-85
-90
-95
-70
R to L
R
-80
d
B
r
d
-90
B
A
-100
-110
-120
L to R
L
-130
-100
20
50
100
200
500
Hz
1 k
2 k
5k
10k 20k
20
50
100
200
500
Hz
1k
2k
5k
10k
20k
Power Analog Microelectronics,Inc
www.poweranalog.com
03/2009 Rev 1.1
11
PAM [ POWER ANALOG MICOELECTRONICS ]
