T E C H N I C A L I N F O R M A T I O N
Typical Performance
Efficiency versus Output Power
THD+N versus Output Power
100
10
5
R = 8
Ω
L
f = 1kHz
90
BBM = 80nS
Vs =+28V
R = 4
Ω
L
80
BW = 22Hz - 22kHz
2
1
70
60
50
40
30
20
10
0
R = 8Ω
R = 4Ω
L
L
0.5
0.2
0.1
f = 1kHz
BBM = 80nS
Vs =+28V
0.05
THD+N =<10%
0.02
0.01
2
5
10
20
50
100
200
0
20
40
60
80
100
120
Output Power (W)
Output Power (W)
Intermodulation Performance
Intermodulation Performance
R = 4
R = 8
Ω
Ω
L
L
+0
+0
-10
-10
19kHz, 20kHz, 1:1
Pout = 40W/Channel
0dBr = 12.65Vrms
Vs =+28V
19kHz, 20kHz, 1:1
Pout = 20W/Channel
0dBr = 12.65Vrms
Vs =+28V
-20
-30
-20
-30
BW = 22Hz - 22kHz
BW = 22Hz - 22kHz
-40
-40
-50
-50
-60
-60
-70
-70
-80
-80
-90
-90
-100
-110
-100
-110
-120
20
-120
50
100
200
500
1k
2k
5k
10k
20k
20
50
100
200
500
1k
2k
5k
10k
20k
Frequency (Hz)
Frequency (Hz)
Noise Floor
Channel Separation versus Frequency
-70
-75
-40
-45
V =+28V
S
Pout = 40W/Channel @Ω 4
Pout = 20W/Channel @Ω 8
BBM = 80nS
16K FFT
-50
VS =+28V
Fs = 48kHz
-55 BW = 22Hz - 22kHz
-80
-85
-90
-95
BW = 22Hz - 22kHz
-60
-65
-70
-75
-80
-85
-100
-105
-110
-115
-120
R
L = 4Ω
-90
-95
-100
-105
-110
-115
RL = 8Ω
-120
20
50
100
200
500
1k
2k
5k
10k
20k
20
50
100
200
500
Frequency (Hz)
1k
2k
5k
10k
20k
Frequency (Hz)
TA3020, Rev 2.1, 01.01
11