MAX9742 查看數據表（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
(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. OUTPUT POWER
100
SINGLE SUPPLY
VDD = 24V
f = 1kHz
10
RL = 8Ω
1
RL = 6Ω
RL = 4Ω
0.1
TOTAL HARMONIC DISTORTION
PLUS NOISE vs. OUTPUT POWER
100
SINGLE SUPPLY
VDD = 32V
f = 1kHz
10
RL = 8Ω
RL = 6Ω
1
THERMALLY
LIMITED
0.1
RL = 4Ω
TOTAL HARMONIC DISTORTION
PLUS NOISE vs. OUTPUT POWER
100
SINGLE SUPPLY
VDD = 36V
f = 1kHz
10
RL = 8Ω
1
RL = 6Ω
THERMALLY
LIMITED
0.1
0.01
0
5
10
15
20
OUTPUT POWER PER CHANNEL (W)
0.01
0
10
20
30
40
OUTPUT POWER PER CHANNEL (W)
RL = 4Ω
0.01
0
10
20
30
40
OUTPUT POWER PER CHANNEL (W)
TOTAL HARMONIC DISTORTION
PLUS NOISE vs. OUTPUT POWER
100
SINGLE SUPPLY
VDD = 40V
f = 1kHz
10
RL = 6Ω
RL = 8Ω
1
THERMALLY
0.1
LIMITED
RL = 4Ω
0.01
0
10
20
30
40
OUTPUT POWER PER CHANNEL (W)
TOTAL HARMONIC DISTORTION
PLUS NOISE vs. OUTPUT POWER
100
BTL
CONFIGURATION
VDD = 24V
10 RL = 8Ω
f = 1kHz
VDD = 24V
VDD = 36V
1
0.1
0.01
0
THERMALLY
LIMITED
10
20
30
40
50
OUTPUT POWER (W)
TOTAL HARMONIC DISTORTION
PLUS NOISE vs. OUTPUT POWER
100
DUAL SUPPLY
RL = 8Ω
10
1
f = 1kHz
0.1
f = 100Hz
0.01
0
5
10
15
20
OUTPUT POWER PER CHANNEL (W)
TOTAL HARMONIC DISTORTION
PLUS NOISE vs. OUTPUT POWER
100
DUAL SUPPLY
RL = 4Ω
THERMALLY LIMITED
10
TOTAL HARMONIC DISTORTION
PLUS NOISE vs. OUTPUT POWER
100
SINGLE SUPPLY
VDD = 24V
RL = 8Ω
10
TOTAL HARMONIC DISTORTION
PLUS NOISE vs. OUTPUT POWER
100
SINGLE SUPPLY
VDD = 24V
RL = 4Ω
10
1
f = 1kHz
0.1
f = 100Hz
0.01
0 5 10 15 20 25 30
OUTPUT POWER PER CHANNEL (W)
1
f = 1kHz
0.1
f = 100Hz
0.01
0
5
10
15
OUTPUT POWER PER CHANNEL (W)
1
f = 1kHz
0.1
f = 100Hz
0.01
0
5
10
15
20
OUTPUT POWER PER CHANNEL (W)
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