PAM8803
3W Filterless Stereo Class-D Audio Amplifier
with Digital Volume Control
Typical Operating Characteristics (continued)
7. THD+N vs. Frequency
8. THD+N vs. Frequency
Po=0.1W,RL=8Ω,Gain=18dB
Po=0.8W,RL=4Ω,Gain=18dB
100
50
100
50
20
10
5
20
10
5
2
1
2
1
VDD=3.3V
%
%
VDD=3.3V
0. 5
0. 5
0. 2
0. 1
0. 2
0. 1
0. 05
0. 05
VDD=5V
VDD=5V
0. 02
0. 01
0. 02
0. 01
20
50
100
200
500
1k
2k
5k
10k
20k
20
50
100
200
500
1k
2k
5k
10k
20k
Hz
Hz
10. Power Supply Ripple Rejection VS Frequency
VDD=5V with 200mVpp Ripple
9. Frequency response
VDD=5V, Gain =18dB
+20
+35
+30
+25
+10
+0
-10
-20
-30
-40
-50
-60
d
B
r
d
B
+20
+15
-70
10
20
50
100
200
500
Hz
1k
2k
5k
10k
20k
20
50 100 200
500 1k
2k
5k 10k 20k
Hz
Hz
11. FFT of Noise Output
VDD=5V, Gain = 18dB
12.Channel Separation
VDD=5V, RL=4Ω, PO=1.0W,Gain = 18dB
+0
-40
-50
-10
-20
-30
-40
-60
-70
-50
-60
d
B
V
-70
d
-80
B
-80
-90
-100
-110
-120
-130
-140
R to L
L to R
-90
-100
-150
20
-110
20
50
100
200
500
1k
2k
5k
10k
20k
50
100
200
500
1k
2k
5k
10k
20k
Hz
Hz
Power Analog Microelectronics,Inc
www.poweranalog.com
12/2009 Rev 1.4
6
PAM [ POWER ANALOG MICOELECTRONICS ]
