Datasheet

MAX9718/MAX9719
GAIN AND PHASE
vs. FREQUENCY
MAX9718 toc27
FREQUENCY (Hz)
GAIN/PHASE (°/dB)
10k1k100
-120
-90
-60
-30
0
30
60
90
120
150
-150
10 100k
A
V
= 60dB
Low-Cost, Mono/Stereo,
1.4W Differential Audio Power Amplifiers
_______________________________________________________________________________________ 7
OUTPUT POWER
vs. LOAD RESISTANCE
MAX9718 toc22
LOAD RESISTANCE (
Ω
)
OUTPUT POWER (mW)
10010
200
100
300
400
500
600
0
1
THD+N = 10%
THD+N = 1%
V
CC
= 3V
f = 1kHz
A
V
= 2
POWER DISSIPATION
vs. OUTPUT POWER
MAX9718 toc23
OUTPUT POWER (W)
POWER DISSIPATION (W)
1.51.20.90.60.3
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
0
0 1.8
V
CC
= 5V
R
L
= 4
Ω
f = 1kHz
A
V
= 2
POWER DISSIPATION
vs. OUTPUT POWER
MAX9718 toc24
OUTPUT POWER (W)
POWER DISSIPATION (W)
1.21.00.80.60.40.2
0.2
0.4
0.6
0.8
1.0
0
0 1.4
V
CC
= 5V
R
L
= 8
Ω
f = 1kHz
A
V
= 2
POWER DISSIPATION
vs. OUTPUT POWER
MAX9718 toc25
OUTPUT POWER (mW)
POWER DISSIPATION (mW)
600500400300200100
100
200
300
400
500
600
700
0
0700
V
CC
= 3V
R
L
= 4
Ω
f = 1kHz
A
V
= 2
POWER DISSIPATION
vs. OUTPUT POWER
MAX9718 toc26
OUTPUT POWER (mW)
POWER DISSIPATION (mW)
400300200100
50
100
150
200
250
300
350
0
0500
V
CC
= 3V
R
L
= 8
Ω
f = 1kHz
A
V
= 2
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY
MAX9718 toc28
FREQUENCY (Hz)
PSRR (dB)
10k1k100
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
-100
10 100k
V
RIPPLE
= 200mV
P-P
R
L
= 8
Ω
C
BIAS
= 1
μ
F
V
CC
= 5V
V
CC
= 3V
COMMON-MODE REJECTION RATIO
vs. FREQUENCY
MAX9718 toc29
FREQUENCY (Hz)
CMRR (dB)
10k1k100
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
-100
10 100k
V
RIPPLE
= 200mV
P-P
R
L
= 8
Ω
C
BIAS
= 1
μ
F
V
CC
= 5V
V
CC
= 3V
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.)