MAX13301 Datasheet, PDF (8/37 Pages) Maxim Integrated Products – 4-Channel, Automotive Class D Audio Amplifier Feedback After the Filter

4-Channel, Automotive Class D Audio Amplifier
Typical Operating Characteristics (continued)
(VPVDD = 24V, VDD = VDD5 = 5V, VGND = VPGND = 0V, fSW = 500kHz, MAP.COMP[2:0] = 011, see Table 32 for LC filter value,
TA = +25NC, unless otherwise noted.)
3
2
1
0
-1
-2
-3
0.01
FREQUENCY RESPONSE
POUT = 1W AND 10W
R_L = 4I
POUT = 30W
R_L = 2I
C2 = 1µF
0.1
1
10
100
FREQUENCY (kHz)
FIXED-FREQUENCY MODULATION WIDEBAND
OUTPUT SPECTRUM
0
MEASURED AT OUT__
-10
WITH -20dB ATTENUATION
-20
-30
-40
-50
-60
-70
-80
-90
0.1
1
10
100
FREQUENCY (MHz)
SPREAD-SPECTRUM MODULATION WIDEBAND
OUTPUT SPECTRUM
0
CTRL5 = 0x09
-10
MEASURED AT
-20
OUT__ WITH -20dB
ATTENUATION
-30
-40
-50
-60
-70
-80
-90
0.1
1
10
100
FREQUENCY (MHz)
SPREAD-SPECTRUM MODULATION WIDEBAND
OUTPUT SPECTRUM
0
CTRL5 = 0xB9
-10
MEASURED AT OUT__
-20
WITH -20dB ATTENUATION
-30
-40
-50
-60
-70
-80
-90
0.1
1
10
100
FREQUENCY (MHz)
8