Typical operating characteristics (continued) – Rainbow Electronics MAX98314 User Manual
Page 7
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MAX98314
Mono 3.2W Class D Amplifier
with Integrated Input Coupling Capacitors
Typical Operating Characteristics (continued)
(V
PVDD
= V
SHDN
= 5.0V, V
PGND
= 0V, A
V
= 6dB, R
L
= J, R
L
connected between OUT+ to OUT-, AC measurement bandwidth 20Hz
to 22kHz, T
A
= +25NC, unless otherwise noted.)
OUTPUT POWER vs. SUPPLY VOLTAGE
MAX98304 toc16
SUPPLY VOLTAGE (V)
OUTPUT POWER (W)
5.0
4.5
4.0
3.5
3.0
0.5
1.0
1.5
2.0
2.5
0
2.5
5.5
f = 1kHz
Z
LOAD
= 8I + 68µH
THD+N = 10%
THD+N = 1%
FREQUENCY (Hz)
1k
100k
GAIN (dB)
10k
100
10
GAIN vs. FREQUENCY
MAX98314 toc17
-15
-10
-5
0
5
10
15
20
-20
GAIN = 0dB
GAIN = 3dB
GAIN = 9dB
GAIN = 6dB
GAIN = 12dB
EFFICIENCY vs. OUTPUT POWER
MAX98314 toc18
OUTPUT POWER (W)
EFFICIENCY (%)
3.0
2.5
1.5
2.0
1.0
0.5
10
20
30
40
50
60
70
80
90
100
0
0
3.5
V
PVDD
= 5V
Z
LOAD
= 8I + 68µH
Z
LOAD
= 4I + 33µH
EFFICIENCY vs. OUTPUT POWER
MAX98314 toc19
OUTPUT POWER (W)
EFFICIENCY (%)
1.5
1.0
0.5
10
20
30
40
50
60
70
80
90
100
0
0
2.0
V
PVDD
= 3.7V
Z
LOAD
= 8I + 68µH
Z
LOAD
= 4I + 33µH
SUPPLY CURRENT
vs. SUPPLY VOLTAGE
MAX98314 toc20
SUPPLY VOLTAGE (V)
SUPPLY CURRENT (mA)
5.0
4.5
4.0
3.5
3.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2.0
0
2.5
5.5
POWER-SUPPLY REJECTION
RATIO vs. FREQUENCY
MAX98314 toc21
FREQUENCY (Hz)
PSRR (dB)
10k
1k
100
10
20
30
40
50
60
70
80
90
100
0
10
100k
V
RIPPLE
= 200mV
P-P
Z
LOAD
= 8I + 68µH
POWER-SUPPLY REJECTION
RATIO vs. SUPPLY VOLTAGE
MAX98314 toc22
SUPPLY VOLTAGE (V)
PSRR (dB)
5.0
4.5
4.0
3.5
3.0
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
-100
2.5
5.5
f = 1kHz
V
RIPPLE
= 200mV
P-P
10
20
30
40
50
60
70
80
90
100
110
FREQUENCY (Hz)
10k
1k
100
10
100k
COMMON-MODE REJECTION RATIO
vs. FREQUENCY
MAX98314 toc23
CMRR (dB)
120
0
Z
LOAD
= 8I + 68µH
A
V
= 0dB
A
V
= 6dB
A
V
= 9dB
A
V
= 12dB
A
V
= 3dB