Datasheet
MAX9718/MAX9719
Low-Cost, Mono/Stereo,
1.4W Differential Audio Power Amplifiers
_______________________________________________________________________________________ 5
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. FREQUENCY
MAX9718 toc04
FREQUENCY (Hz)
THD+N (%)
100 1k 10k
0.001
0.01
0.1
1
10
0.0001
10 100k
V
CC
= 5V
R
L
= 8
Ω
A
V
= 4
OUTPUT POWER = 200mW
OUTPUT POWER = 800mW
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. FREQUENCY
MAX9718 toc05
FREQUENCY (Hz)
THD+N (%)
100 1k 10k
0.001
0.01
0.1
1
10
0.0001
10 100k
V
CC
= 3V
R
L
= 4
Ω
A
V
= 2
OUTPUT POWER = 250mW
OUTPUT POWER = 50mW
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. FREQUENCY
MAX9718 toc06
FREQUENCY (Hz)
THD+N (%)
100 1k 10k
0.001
0.01
0.1
1
10
0.0001
10 100k
V
CC
= 3V
R
L
= 4
Ω
A
V
= 4
OUTPUT POWER = 70mW
OUTPUT POWER = 175mW
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. FREQUENCY
MAX9718 toc07
FREQUENCY (Hz)
THD+N (%)
100 1k 10k
0.001
0.01
0.1
1
10
0.0001
10 100k
V
CC
= 3V
R
L
= 8
Ω
A
V
= 2
OUTPUT POWER = 250mW
OUTPUT POWER = 100mW
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. FREQUENCY
MAX9718 toc08
FREQUENCY (Hz)
THD+N (%)
100 1k 10k
0.001
0.01
0.1
1
10
0.0001
10 100k
V
CC
= 3V
R
L
= 8
Ω
A
V
= 4
OUTPUT POWER = 200mW
OUTPUT POWER = 50mW
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. OUTPUT POWER
MAX9718 toc09
OUTPUT POWER (W)
THD+N (%)
0.2 0.4 0.6 0.8 1.2 1.41.0 1.8
0.01
0.1
1
10
100
0.001
02.0
f
IN
= 1kHz
f
IN
= 100Hz
f
IN
= 10kHz
1.6
V
CC
= 5V
R
L
= 4
Ω
A
V
= 2
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. OUTPUT POWER
MAX9718 toc10
OUTPUT POWER (W)
THD+N (%)
0.5 1.51.0
0.01
0.1
1
10
100
0.001
02.0
f
IN
= 1kHz
f
IN
= 100Hz
f
IN
= 10kHz
V
CC
= 5V
R
L
= 4
Ω
A
V
= 4
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. OUTPUT POWER
MAX9718 toc11
OUTPUT POWER (W)
THD+N (%)
0.2 0.6 0.8 1.0 1.20.4
0.01
0.1
1
10
100
0.001
0 1.4
f
IN
= 1kHz
f
IN
= 100Hz
f
IN
= 10kHz
V
CC
= 5V
R
L
= 8
Ω
A
V
= 2
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. OUTPUT POWER
MAX9718 toc12
OUTPUT POWER (W)
THD+N (%)
0.2 0.6 0.8 1.0 1.20.4
0.01
0.1
1
10
100
0.001
0 1.4
f
IN
= 100Hz
f
IN
= 1kHz
f
IN
= 10kHz
V
CC
= 5V
R
L
= 8
Ω
A
V
= 4
Typical Operating Characteristics (continued)
(V
CC
= 5V, C
BIAS
= 0.1μF, THD+N measurement bandwidth = 22Hz to 22kHz, T
A
= +25°C, unless otherwise noted.)