Manual

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MAX98314
Mono 3.2W Class D Amplifier
with Integrated Input Coupling Capacitors
ELECTRICAL CHARACTERISTICS (continued)
(V
PVDD
= V
SHDN
= V
GAIN
= 5V, V
PGND
= 0V, A
V
= 6dB (GAIN = PVDD), R
L
= J, R
L
connected between OUT+ to OUT-, AC measure-
ment bandwidth 20Hz to 22kHz, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
= +25NC.) (Note 2, 3)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Common-Mode Rejection Ratio CMRR f
IN
= 1kHz, input referred 67 dB
Output Offset Voltage V
OS
T
A
= +25NC (Note 4) Q1 Q3
mV
Click-and-Pop Level K
CP
R
L
= 8I + 68FH, peak
voltage, T
A
= +25NC,
A-weighted, 32
samples per second,
T
A
= +25NC (Notes 4, 5)
Into shutdown -59
dBV
Out of shutdown -82
Power-Supply Rejection Ratio
(Note 4)
PSRR
V
PVDD
= 2.5V to 5.5V, T
A
= +25NC
70 90
dB
V
RIPPLE
= 200mV
P-P
f = 217Hz 74
f = 1kHz 72
f = 20kHz 49
Output Power P
OUT
THD+N = 10%
f = 1kHz
R
L
= 4I + 33FH
V
PVDD
= 5.0V 3.2
W
V
PVDD
= 4.2V 2.2
V
PVDD
= 3.7V 1.7
THD+N = 1%
f = 1kHz
R
L
= 4I + 33FH
V
PVDD
= 5.0V 2.6
V
PVDD
= 4.2V 1.8
V
PVDD
= 3.7V 1.4
THD+N = 10%
f = 1kHz
R
L
= 8I + 68FH
V
PVDD
= 5.0V 1.8
V
PVDD
= 4.2V 1.2
V
PVDD
= 3.7V 0.96
THD+N = 1%
f = 1kHz
R
L
= 8I + 68FH
V
PVDD
= 5.0V 1.4
V
PVDD
= 4.2V 1
V
PVDD
= 3.7V 0.8
Total Harmonic Distortion Plus
Noise
THD+N f
IN
= 1kHz
R
L
= 4I,
P
OUT
= 1W
0.03 0.1
%
R
L
= 8I
P
OUT
= 0.725W
0.03
Output Noise V
N
A-weighted (Note 4)
A
V
= 12dB 31
FV
RMS
A
V
= 9dB 26
A
V
= 6dB 23
A
V
= 3dB 21
A
V
= 0dB 19
Efficiency
E R
L
= 8I, P
OUT
= 1.8W, f = 1kHz
93 %
Oscillator Frequency f
OSC
300 kHz
Spread-Spectrum Bandwidth 20 kHz
Current Limit 2.8 A
Thermal Shutdown Level 155
NC