Datasheet

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MAX98307/MAX98308
3.3W Mono Class DG Multilevel Audio Amplifier
ELECTRICAL CHARACTERISTICS (continued)
V
PVDD
= V
CC
= V
SHDN
= 3.6V, V
PGND
= V
GND
= 0V, Z
L
= 8I + 68FH between OUT+ and OUT-, (MAX98307 R
IN+
= R
IN-
= 10kI,
R
FB+
= R
FB-
= 20kI), C
IN+
= C
IN-
= 0.33FF, A
V
= 14.5dB, AC measurement bandwidth 20Hz to 20kHz, T
A
= T
MIN
to T
MAX
, unless
otherwise noted. Typical values are at T
A
= +25NC.) (Notes 2, 3)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Voltage Gain
(MAX98308)
A
V
GAIN = short to GND 20 20.5 21
dB
GAIN = 100kI pulldown to GND
17 17.5 18
GAIN = short to PVDD 14 14.5 15
GAIN = 100kI pullup to PVDD
11 11.5 12
GAIN = unconnected 8 8.5 9
Common-Mode Rejection Ratio
(MAX98308)
CMRR f
IN
= 1kHz 65 dB
Output Power (MAX98307) P
OUT
f
IN
= 1kHz,
THD+N = 1%
Z
L
= 8I + 68mH,
V
PVDD
= 3.6V
1.54
W
Z
L
= 8I + 68mH,
V
PVDD
= 4.2V
2
Z
L
= 8I + 68mH,
V
PVDD
= 5.0V
2.85
f
IN
= 1kHz,
THD+N = 10%
Z
L
= 8I + 68mH,
V
PVDD
= 3.6V
1.77
Z
L
= 8I + 68mH,
V
PVDD
= 4.2V
2.3
Z
L
= 8I + 68mH,
V
PVDD
= 5.0V
3.3
Output Power (MAX98308) P
OUT
THD+N ≤ 1%
Z
SPK
= 8I + 68mH,
V
PVDD
= 3.6V
1.4
W
Z
SPK
= 8I + 68mH,
V
PVDD
= 4.2V
1.92
Z
SPK
= 8I + 68mH,
V
PVDD
= 5.0V
2.7
THD+N ≤ 10%
Z
SPK
= 8I + 68mH,
V
PVDD
= 3.6V
1.57
Z
SPK
= 8I + 68mH,
V
PVDD
= 4.2V
2.13