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.)
SHUTDOWN SUPPLY CURRENT
vs. SUPPLY VOLTAGE
1.0
SINGLE SUPPLY
INPUTS AC GROUNDED
0.8 NO LOAD CONNECTED
0.6
0.4
WIDEBAND OUTPUT SPECTRUM
0
RBW = 10kHz
MEASURED AT SINGLE-
-20
ENDED FILTER OUTPUT
INPUTS AC GROUNDED
-40
-60
-80
OUTPUT SPECTRUM FFT
0
SINGLE SUPPLY
RL = 8Ω
-20 fIN = 1kHz
VOUT_ = -60dBV
-40
-60
-80
0.2
-100
-100
0
-120
20
25
30
35
40
0.1
SUPPLY VOLTAGE (V)
1.0
10
FREQUENCY (MHz)
-120
100
0
5k
10k
15k
20k
FREQUENCY (Hz)
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY
0
DUAL SUPPLY
-10 RL = 8Ω
-20
-30
-40
-50
VSS = -15V + 500mVP-P
-60
-70
-80
10
VDD = 15V + 500mVP-P
100
1k
10k
100k
FREQUENCY (Hz)
CROSSTALK vs. FREQUENCY
0
DUAL SUPPLY
-10 RL = 8Ω
-20 POUT = 1W
-30
-40
-50
-60
R INTO L
-70
-80
-90
10
L INTO R
100
1k
10k
100k
FREQUENCY (Hz)
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY
20
SINGLE SUPPLY
0 VDD = 24V + 500mVP-P
RL = 8Ω
-20
OUT_ PSRR
-40
-60
-80
-100
MID PSRR
-120
10
100
1k
10k
100k
FREQUENCY (Hz)
CROSSTALK vs. FREQUENCY
20
SINGLE SUPPLY
0 RL = 8Ω
POUT = 1W
-20
-40
R INTO L
-60
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY
0
BTL
-10 VDD = 24V + 500mVP-P
-20 RL = 8Ω
-30
-40
-50
-60
-70
-80
-90
-100
10
100
1k
10k
100k
FREQUENCY (Hz)
VSHDN
2V/div
EXITING SHUTDOWN
(DUAL SUPPLY)
DUAL SUPPLY
RL = 8Ω
MAX9742 toc43
VOUT_
20V/div
-80
FILTERED
VOUT_
-100
L INTO R
5V/div
-120
10
100
1k
10k
100k
FREQUENCY (Hz)
20ms/div
10 ______________________________________________________________________________________
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