Maxim MAX9777 Manual page 6

Stereo 3W Audio Power Amplifiers with
Headphone Drive and Input Mux
(V = PV = 5V, GND = PGND = 0V, V
DD DD
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. OUTPUT POWER (SPEAKER MODE)
100
A = 4V/V
V
R = 4Ω
L
10
f = 10kHz
1
f = 1kHz
0.1
0.01
f = 20Hz
0.001
0 0.5 1.0 1.5 2.0
OUTPUT POWER (W)
OUTPUT POWER vs. AMBIENT TEMPERATURE
(SPEAKER MODE)
4
THD+N = 10%
3
THD+N = 1%
2
1
f = 1kHz
R = 3Ω
L
0
-40 -15 10 35
AMBIENT TEMPERATURE (°C)
OUTPUT POWER vs. LOAD RESISTANCE
5
4
THD+N = 10%
3
2
1
0
1 10
6 _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
Typical Operating Characteristics (continued)
= 5V, C
SHDN
BIAS
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. OUTPUT POWER (SPEAKER MODE)
100
A = 2V/V
V
R = 8Ω
L
10
1
0.1
0.01
0.001
2.5 3.0 3.5 0
OUTPUT POWER vs. AMBIENT TEMPERATURE
4
THD+N = 10%
3
THD+N = 1%
2
1
f = 1kHz
R = 4Ω
L
0
-40
60 85
(SPEAKER MODE)
f = 1kHz
THD+N = 1%
100 1k 10k 100k
LOAD RESISTANCE (Ω)
= 1µF, T = +25°C, unless otherwise noted.)
A
f = 10kHz
f = 1kHz
f = 20Hz
0.5 1.0 1.5 2.0
OUTPUT POWER (W)
(SPEAKER MODE)
-15 10 35 60 85
AMBIENT TEMPERATURE (°C)
POWER DISSIPATION vs. OUTPUT POWER
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
0
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. OUTPUT POWER (SPEAKER MODE)
100
A = 4V/V
V
R = 8Ω
L
10
1
f = 10kHz
0.1
f = 1kHz
0.01
f = 20Hz
0.001
0 0.5 1.0
OUTPUT POWER (W)
OUTPUT POWER vs. AMBIENT TEMPERATURE
(SPEAKER MODE)
2.0
THD+N = 10%
1.5
THD+N = 1%
1.0
0.5
f = 1kHz
R = 8Ω
L
0
-40 -15 10 35
AMBIENT TEMPERATURE (°C)
(SPEAKER MODE)
R = 4Ω
L
f = 1kHz
0.5 1.0 1.5 2.0 2.5
OUTPUT POWER (W)
1.5 2.0
60 85