MAX9742 データシートの表示（PDF） - Maxim Integrated
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MAX9742 Datasheet PDF : 36 Pages
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Single-/Dual-Supply, Stereo 16W,
Class D Amplifier with Differential Inputs
Typical Operating Characteristics (continued)
(24V single-supply mode, ±15V dual-supply mode, both channels driven in phase, THD+N measurement bandwidth = 22Hz to
22kHz, TA = +25°C, unless otherwise noted. See Figure 1 for test circuits, see Typical Application Circuits/Functional Diagrams for
test circuit component values.)
TOTAL HARMONIC DISTORTION
PLUS NOISE vs. FREQUENCY
10
SINGLE SUPPLY
VDD = 24V
RL = 8Ω
POUT = 50mW
1
TOTAL HARMONIC DISTORTION
PLUS NOISE vs. FREQUENCY
10
SINGLE SUPPLY
VDD = 24V
RL = 4Ω
POUT = 50mW
1
TOTAL HARMONIC DISTORTION PLUS NOISE vs.
OUTPUT POWER WITH AND WITHOUT T-NETWORK
100
SINGLE SUPPLY
VDD = 24V
RL = 8Ω
10 f = 1kHz
WITHOUT T-NETWORK
1
0.1
0.1
0.1
0.01
100
1k
10k
FREQUENCY (Hz)
0.01
100k
100
EFFICIENCY AND POWER
DISSIPATION vs. OUTPUT POWER
100
5.0 MAX9742 toc22
90
4.5
80
4.0
70
EFFICIENCY
3.5
60
3.0
50
2.5
40
2.0
30
20
10
0
0
SYSTEM POWER
DISSIPATION
5
1.5
SINGLE SUPPLY
VDD = 30V
1.0
RL = 8Ω
0.5
fIN = 1kHz
0
10
15
OUTPUT POWER PER CHANNEL (W)
EFFICIENCY AND POWER
DISSIPATION vs. OUTPUT POWER
100
2.5 MAX9742 toc24
90
80
2.0
70
EFFICIENCY
60
1.5
50
SYSTEM POWER
40
DISSIPATION
1.0
30
20
10
0
0
SINGLE SUPPLY
VDD = 24V
0.5
RL = 8Ω
fIN = 1kHz
0
5
10
15
OUTPUT POWER PER CHANNEL (W)
1k
10k
FREQUENCY (Hz)
WITH T-NETWORK
0.01
100k
0.001 0.01 0.1
1
10 100
OUTPUT POWER PER CHANNEL (W)
EFFICIENCY AND POWER
DISSIPATION vs. OUTPUT POWER
100
5.0 MAX9742 toc23
90
4.5
80
4.0
70
EFFICIENCY
3.5
60
3.0
50
2.5
40
2.0
30
1.5
20
SYSTEM POWER
DISSIPATION DUAL SUPPLY
1.0
10
RL = 8Ω
fIN = 1kHz
0.5
0
0
0
5
10
15
20
OUTPUT POWER PER CHANNEL (W)
EFFICIENCY AND POWER
DISSIPATION vs. OUTPUT POWER
90
9 MAX9742 toc25
80
8
70
EFFICIENCY
7
60
6
50
SYSTEM POWER 5
DISSIPATION
40
4
30
20
10
0
0
3
SINGLE SUPPLY
VDD = 24V
2
RL = 4Ω
1
fIN = 1kHz
0
5
10
15
20
25
OUTPUT POWER PER CHANNEL (W)
8 _______________________________________________________________________________________
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