Typical operating characteristics (continued) – Rainbow Electronics MAX9704 User Manual
Page 5
MAX9703/MAX9704
15W, Filterless, Spread-Spectrum
Mono/Stereo Class D Amplifiers
_______________________________________________________________________________________
5
EFFICIENCY vs. OUTPUT POWER
MAX9703/04 toc10
OUTPUT POWER (W)
EFFICIENCY (%)
16
12
8
4
2
6
10
14
18
10
20
30
40
50
60
70
80
90
100
0
0
20
V
DD
= 15V
A
V
= 16dB
f = 1kHz
R
L
= 16Ω
R
L
= 8Ω
OUTPUT POWER
vs. SUPPLY VOLTAGE
MAX9703/04 toc11
SUPPLY VOLTAGE (V)
OUTPUT POWER (W)
0
6
4
2
8
10
12
14
16
18
20
10
16
13
19
22
25
R
L
= 8Ω
R
L
= 16Ω
A
V
= 16dB
THD+N = 10%
20
18
16
14
12
10
8
6
4
2
0
1
10
100
OUTPUT POWER
vs. LOAD RESISTANCE
MAX9703/04 toc12
LOAD RESISTANCE (Ω)
OUTPUT POWER (W)
THD+N = 1%
THD+N = 10%
V
DD
= 15V
R
L
= 8Ω
A
V
= 16dB
24
22
20
18
16
14
12
10
8
6
4
2
0
1
10
100
OUTPUT POWER
vs. LOAD RESISTANCE
MAX9703/04 toc13
LOAD RESISTANCE (Ω)
OUTPUT POWER (W)
V
DD
= 20V
R
L
= 8Ω
A
V
= 16dB
THD+N = 10%
THD+N = 1%
CROSSTALK vs. FREQUENCY
MAX9703/04 toc16
FREQUENCY (Hz)
CROSSTALK (dB)
10k
1k
100
-80
-100
-60
-40
-20
0
-120
10
100k
LEFT TO RIGHT
RIGHT TO LEFT
A
V
= 16dB
1% THD+N
V
DD
= 15V
8Ω LOAD
COMMON-MODE REJECTION RATIO
vs. FREQUENCY
MAX9703/04 toc14
FREQUENCY (Hz)
CMRR (dB)
10k
1k
100
-70
-60
-50
-40
-30
-20
-10
0
-80
10
100k
V
DD
= 15V
R
L
= 8Ω
A
V
= 16dB
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY
MAX9703/04 toc15
FREQUENCY (Hz)
PSRR (dB)
10k
1k
100
-100
-80
-60
-40
-20
0
-120
10
100k
A
V
= 16dB
R
L
= 8Ω
200mV
P-P
INPUT
V
DD
= 15V
OUTPUT FREQUENCY SPECTRUM
MAX9703/04 toc17
FREQUENCY (kHz)
OUTPUT MAGNITUDE (dB)
-120
-100
-80
-60
-40
-20
0
20
-140
18
16
12 14
4
6
8
10
2
0
20
FFM MODE
A
V
= 16dB
UNWEIGHTED
f
IN
= 1kHz
P
OUT
= 5W
R
L
= 8Ω
OUTPUT FREQUENCY SPECTRUM
MAX9703/04 toc18
FREQUENCY (kHz)
OUTPUT MAGNITUDE (dB)
-120
-100
-80
-60
-40
-20
0
20
-140
18
16
12 14
4
6
8
10
2
0
20
SSM MODE
A
V
= 16dB
UNWEIGHTED
f
IN
= 1kHz
P
OUT
= 5W
R
L
= 8Ω
Typical Operating Characteristics (continued)
(33µH with 4Ω, 68µH with 8Ω, part in SSM mode, 136µH with 16Ω, measurement BW = 22Hz to 22kHz, unless otherwise noted.)