Datasheet
MAX9741
12W+12W, Low-EMI, Spread-Spectrum,
Stereo, Class D Amplifier
_______________________________________________________________________________________ 5
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY
MAX9741 toc10
FREQUENCY (Hz)
PSRR (dB)
10k1k100
-100
-80
-60
-40
-20
0
-120
10 100k
200mV
P-P
INPUT
CROSSTALK vs. FREQUENCY
MAX9741 toc11
FREQUENCY (Hz)
CROSSTALK (dB)
10k1k100
-80
-100
-60
-40
-20
0
-120
10 100k
LEFT TO RIGHT
RIGHT TO LEFT
OUTPUT FREQUENCY SPECTRUM
MAX9741 toc12
FREQUENCY (kHz)
OUTPUT MAGNITUDE (dB)
-120
-100
-80
-60
-40
-20
0
20
-140
181612 144 6 8 102020
FFM MODE
UNWEIGHTED
f
IN
= 1kHz
P
OUT
= 5W
OUTPUT FREQUENCY SPECTRUM
MAX941 toc13
FREQUENCY (kHz)
OUTPUT MAGNITUDE (dB)
-120
-100
-80
-60
-40
-20
0
20
-140
181612 144 6 8 102020
SSM MODE
UNWEIGHTED
f
IN
= 1kHz
P
OUT
= 5W
OUTPUT FREQUENCY SPECTRUM
MAX9741 toc14
FREQUENCY (kHz)
OUTPUT MAGNITUDE (dB)
-120
-100
-80
-60
-40
-20
0
20
-140
181612 144 6 8 102020
SSM MODE
A-WEIGHTED
f
IN
= 1kHz
P
OUT
= 5W
100k 1M 10M 100M
WIDEBAND OUTPUT SPECTRUM
(FFM MODE)
MAX9741 toc15
FREQUENCY (Hz)
OUTPUT AMPLITUDE (dBV)
0
-120
-100
-80
-60
-40
-20
RBW = 10kHz
Typical Operating Characteristics (continued)
(V
DD
= 18V, R
L
= 8Ω, f
IN
= 1kHz, 33µH with 4Ω, 68µH with 8Ω, part in SSM mode, 136µH with 16Ω, measurement BW = 22Hz to
22kHz, unless otherwise noted.)