Datasheet

MAX98355A/MAX98355B
PCM Input Class D Audio Power Amplifiers
10Maxim Integrated
Typical Operating Characteristics (continued)
(V
DD
= 5V, V
G
ND
= 0V, GAIN = V
DD
(+6dB). 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.)
10k1k10010 100k
TOTAL HARMONIC DISTORTION
PLUS NOISE vs. FREQUENCY
MAX98355A/B toc09
FREQUENCY (Hz)
THD+N RATIO (dB)
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
-100
V
DD
= 3.7V
GAIN = 12dB
Z
SPK
= 8I + 68µH
P
OUT
= 75mW
P
OUT
= 350mW
TOTAL HARMONIC DISTORTION
PLUS NOISE vs. OUTPUT POWER
MAX98355A/B toc06
OUTPUT POWER (W)
THD+N RATIO (dB)
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
-100
V
DD
= 3.7V
GAIN = 12dB
Z
SPK
= 4I + 33µH
f = 6kHz
f = 1kHz
f = 100Hz
10.10.010.001 10
10k1k10010 100k
TOTAL HARMONIC DISTORTION
PLUS NOISE vs. FREQUENCY
MAX98355A/B toc10
FREQUENCY (Hz)
THD+N RATIO (dB)
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
-100
V
DD
= 4.2V
GAIN = 12dB
Z
SPK
= 8I + 68µH
P
OUT
= 100mW
P
OUT
= 500mW
TOTAL HARMONIC DISTORTION
PLUS NOISE vs. OUTPUT POWER
MAX98355A/B toc07
OUTPUT POWER (W)
THD+N RATIO (dB)
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
-100
V
DD
= 4.2V
GAIN = 12dB
Z
SPK
= 4I + 33µH
f = 6kHz
f = 1kHz
f = 100Hz
10.10.010.001 10
10k1k10010 100k
TOTAL HARMONIC DISTORTION
PLUS NOISE vs. FREQUENCY
MAX98355A/B toc11
FREQUENCY (Hz)
THD+N RATIO (dB)
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
-100
V
DD
= 5V
GAIN = 12dB
Z
SPK
= 8I + 68µH
P
OUT
= 150mW
P
OUT
= 850mW
TOTAL HARMONIC DISTORTION
PLUS NOISE vs. OUTPUT POWER
MAX98355A/B toc08
OUTPUT POWER (W)
THD+N RATIO (dB)
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
-100
V
DD
= 5V
GAIN = 12dB
Z
SPK
= 4I + 33µH
f = 6kHz
f = 1kHz
f = 100Hz
10.10.010.001 10