Typical Operating Characteristics (continued)
(MAX9736A, VPVDD = 12V, MOD = high, spread-spectrum modulation mode, VGND = VPGND = 0V, VSHDN = VMUTE = 5V, unless
otherwise noted.)
MAX9736
Mono/Stereo High-Power Class D Amplifier
_______________________________________________________________________________________
7
TOTAL HARMONIC DISTORTION
PLUS NOISE vs. OUTPUT POWER
MAX9736
toc10
OUTPUT POWER (W)
THD+N
(%)
16
14
12
10
8
6
4
2
0.01
0.1
1
10
0.001
018
VPVDD = 24V,
SPREAD SPECTRUM,
8
Ω LOAD
6kHz
1kHz
20Hz
TOTAL HARMONIC DISTORTION
PLUS NOISE vs. OUTPUT POWER
MAX9736
toc11
OUTPUT POWER (W)
14
12
10
8
6
4
2
016
VPVDD = 12V,
FIXED FREQUENCY,
4
Ω LOAD
6kHz
1kHz
20Hz
THD+N
(%)
0.01
0.1
1
10
0.001
TOTAL HARMONIC DISTORTION
PLUS NOISE vs. OUTPUT POWER
MAX9736
toc12
OUTPUT POWER (W)
THD+N
(%)
15
12
9
6
3
0.01
0.1
1
10
0.001
018
6kHz
1kHz
20Hz
VPVDD = 12V,
SPREAD SPECTRUM,
4
Ω LOAD
EFFICIENCY
vs. TOTAL OUTPUT POWER
MAX9736 toc13
TOTAL OUTPUT POWER (W)
EFFICIENCY
(%)
15
10
5
10
20
30
40
50
60
70
80
90
100
0
POWER
DISSIPATION
(W)
1
2
3
4
5
6
7
8
9
10
0
020
EFFICIENCY
POWER DISSIPATION
VPVDD = 12V,
FIXED FREQUENCY,
8
Ω LOAD
EFFICIENCY
vs. TOTAL OUTPUT POWER
MAX9736 toc14
TOTAL OUTPUT POWER (W)
18
16
12 14
4
6
8
10
2
020
EFFICIENCY
(%)
10
20
30
40
50
60
70
80
90
100
0
EFFICIENCY
POWER DISSIPATION
VPVDD = 12V,
SPREAD SPECTRUM,
8
Ω LOAD
POWER
DISSIPATION
(W)
1
2
3
4
5
6
7
8
9
10
0
EFFICIENCY
vs. TOTAL OUTPUT POWER
MAX9736 toc15
TOTAL OUTPUT POWER (W)
30
25
15
20
10
5
035
EFFICIENCY
(%)
10
20
30
40
50
60
70
80
90
100
0
EFFICIENCY
POWER DISSIPATION
VPVDD = 18V,
SPREAD SPECTRUM,
8
Ω LOAD
POWER
DISSIPATION
(W)
1
2
3
4
5
6
7
8
9
10
0
EFFICIENCY
vs. TOTAL OUTPUT POWER
MAX9736 toc16
TOTAL OUTPUT POWER (W)
30
25
15
20
10
5
035
EFFICIENCY
(%)
10
20
30
40
50
60
70
80
90
100
0
EFFICIENCY
POWER DISSIPATION
VPVDD = 18V,
FIXED FREQUENCY,
8
Ω LOAD
POWER
DISSIPATION
(W)
1
2
3
4
5
6
7
8
9
10
0