MP7740 – 15W CLASS D MONO SINGLE ENDED AUDIO AMPLIFIER
TYPICAL PERFORMANCE CURVES
(continued)
Circuit of Figure 1, V
DD
=24V, V
EN
=5V, T
A
= +25°C, unless otherwise noted.
0
-20
0
0
AMPLITUDE (dB)
AMPLITUDE (dB)
AMPLITUDE (dBV)
-20
-40
-60
-80
Left to Right
Right to Left
-20
-40
-60
-80
-40
-60
-80
-100
-120
20 50 100
500 1k 2k
5k 10k 20k
FREQUENCY (Hz)
Left to Right
Right to Left
-100
-120
20 50 100
500 1k 2k
5k 10k 20k
FREQUENCY (Hz)
-100
-120
60 100 200 500 1k 2k
5k 10k 20k
FREQUENCY (Hz)
P
OUT
vs. V
DD
Input Signal Freq=1kHz
0
35
30
25
100
90
Efficiency vs. P
OUT
V
DD
=24V,Input Signal Freq=1kHz
AMPLITUDE (dBV)
-20
P
OUT
(W)
-40
-60
-80
-100
-120
60 100 200 500 1k 2k
5k 10k 20k 30k
EFFICIENCY (%)
0
5
10 15 20 25 30 35 40
V
DD
(V)
80
70
60
50
40
30
20
10
0
0
2
4
6
8 10 12 14 16 18
P
OUT
(W)
20
15
10
5
0
FREQUENCY (Hz)
Thermal Rise vs. Output Power
V
DD
=24V
150
130
110
90
70
50
30
10
0
5
10
15
OUTPUT POWER (W)
MP7740 Rev. 0.9
9/22/2009
www.MonolithicPower.com
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6
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