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MAX98357A/MAX98357B
PCM Input Class D Audio Power Amplifiers
10Maxim Integrated
Typical Operating Characteristics (continued)
(V
DD
= 5V, V
GND
= 0V, GAIN_SLOT = GND (+12dB). BCLK = 3.072MHz, LRCLK = 48kHz, speaker loads (Z
SPK
) connected between
OUTP and OUTN, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
= +25NC.)
-100
-90
-80
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-50
-40
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-20
-10
0
10 100 1000 10000 100000
THD+N (dB)
FREQUENCY (Hz)
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. OUTPUT FREQUENCY
V
DD
= 3.7V
Z
SPK
= 8Ω + 68μ H
P
OUT
= 75mW
P
OUT
= 350mW
toc09
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-90
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-50
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-20
-10
0
10 100 1000 10000 100000
THD+N (dB)
FREQUENCY (Hz)
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. OUTPUT FREQUENCY
V
DD
= 4.2V
Z
SPK
= 8Ω + 68μ H
P
OUT
= 100mW
P
OUT
= 500mW
toc10
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
10 100 1000 10000 100000
THD+N (dB)
FREQUENCY (Hz)
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. OUTPUT FREQUENCY
V
DD
= 5V
Z
SPK
= 8Ω + 68μ H
P
OUT
= 150mW
P
OUT
= 850mW
toc11
0.0
0.5
1.0
1.5
2.0
2.5
1 10 100
OUTPUT POWER (W)
LOAD RESISTANCE
OUTPUT POWER vs. LOAD RESISTANCE
V
DD
= 3.7V
10% THD+N
1% THD+N
toc15
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
1 10 100
OUTPUT POWER (W)
LOAD RESISTANCE
OUTPUT POWER vs. LOAD RESISTANCE
V
DD
= 4.2V
10% THD+N
1% THD+N
toc16
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
1 10 100
OUTPUT POWER (W)
LOAD RESISTANCE
OUTPUT POWER vs. LOAD RESISTANCE
V
DD
= 5V
10% THD+N
1% THD+N
toc17
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
10 100 1000 10000 100000
THD+N (dB)
FREQUENCY (Hz)
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. OUTPUT FREQUENCY
V
DD
= 3.7V
Z
SPK
= 4Ω + 33μ H
P
OUT
= 150mW
P
OUT
= 600mW
toc12
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
10 100 1000 10000 100000
THD+N (dB)
FREQUENCY (Hz)
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. OUTPUT FREQUENCY
V
DD
= 4.2V
Z
SPK
= 4Ω + 33μ H
P
OUT
= 250mW
P
OUT
= 850mW
toc13
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
10 100 1000 10000 100000
THD+N (dB)
FREQUENCY (Hz)
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. OUTPUT FREQUENCY
V
DD
= 5V
Z
SPK
= 4Ω + 33μ H
P
OUT
= 1.5W
P
OUT
= 350mW
toc14