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MAX4295
Mono, 2W, Switch-Mode (Class D)
Audio Power Amplifier
4 _______________________________________________________________________________________
Typical Operating Characteristics
(V
CC
= PV
CC
= +3V, input amplifier gain = -1, SHDN = V
CC
, T
A
= +25°C, unless otherwise noted.)
10 1k 100k
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. INPUT FREQUENCY (V
IN
= 2.5V
P-P
)
MAX4295 toc02
INPUT FREQUENCY (Hz)
THD+N (%)
10
1
0.01
0.1
V
CC
= +5V
R
L
= 8Ω
1MHz
125kHz
250kHz
500kHz
0 0.3 0.6 1.20.9 1.5 1.8
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. OUTPUT POWER (f
IN
= 1kHz)
MAX4295 toc05
OUTPUT POWER (W)
THD+N (%)
100
10
1
0.10
0.1
V
CC
= +5V
R
L
= 8Ω
500kHz
250kHz
1MHz
125kHz
0 0.3 0.6 0.9 1.2 1.5 1.8
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. OUTPUT POWER (f
IN
= 20kHz)
MAX4295 toc08
OUTPUT POWER (W)
THD+N (%)
10
1
0.01
0.1
V
CC
= +5V
R
L
= 8Ω
1MHz
125kHz
250kHz
500kHz
10 1k 100k
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. INPUT FREQUENCY (V
IN
= 2.5V
P-P
)
MAX4295 toc01
INPUT FREQUENCY (Hz)
THD+N (%)
10
1
0.01
0.1
1MHz
125kHz
250kHz
500kHz
V
CC
= +5V
R
L
= 4Ω
0 0.5 1.0 1.5 2.0 2.5
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. OUTPUT POWER (f
IN
= 1kHz)
MAX4295 toc04
OUTPUT POWER (W)
THD+N (%)
100
10
1
0.10
0.1
V
CC
= +5V
R
L
= 4Ω
1MHz
250kHz
125kHz
500kHz
0 0.5 1.0 1.5 2.0 2.5
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. OUTPUT POWER (f
IN
= 20kHz)
MAX4295 toc07
OUTPUT POWER (W)
THD+N (%)
100
10
1
0.10
0.1
V
CC
= +5V
R
L
= 4Ω
250kHz
125kHz
500kHz
1MHz
10 1k 100k
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. INPUT FREQUENCY (V
IN
= 2.5V
P-P
)
MAX4295 toc03
INPUT FREQUENCY (Hz)
THD+N (%)
10
1
0.01
0.1
V
CC
= +5V
R
L
= 32Ω
1MHz
125kHz
250kHz
500kHz
0 0.1 0.2 0.3 0.4 0.5
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. OUTPUT POWER (f
IN
= 1kHz)
MAX4295 toc06
OUTPUT POWER (W)
THD+N (%)
100
10
1
0.10
0.1
V
CC
= +5V
R
L
= 32Ω
1MHz
500kHz
250kHz
125kHz
0 0.1 0.2 0.3 0.4 0.5
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. OUTPUT POWER (f
IN
= 20kHz)
MAX4295 toc09
OUTPUT POWER (W)
THD+N (%)
100
10
1
0.10
0.1
V
CC
= +5V
R
L
= 32Ω
500kHz
1MHz
125kHz
250kHz