MAX98304 查看數據表（PDF） - Maxim Integrated
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MAX98304 Datasheet PDF : 12 Pages
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MAX98304
Mono 3.2W Class D Amplifier
ELECTRICAL CHARACTERISTICS (continued)
(VPVDD = VSHDN = 5.0V, VPGND = 0V, AV = 12dB (GAIN = PGND), RL = J, RL connected between OUT+ to OUT-, AC measurement
bandwidth 20Hz to 22kHz, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25NC.) (Notes 1, 2)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
VPVDD = 2.5V to 5.5V, TA = +25NC
72
90
Power-Supply Rejection Ratio
(Note 3)
PSRR
f = 217Hz
VRIPPLE = 200mVP-P f = 1kHz
80
dB
84
f = 20kHz
84
Output Power
POUT
THD+N = 10%,
f = 1kHz,
RL = 4I + 33FH
THD+N = 1%,
f = 1kHz,
RL = 4I + 33FH
THD+N = 10%,
f = 1kHz,
RL = 8I + 68FH
THD+N = 1%,
f = 1kHz,
RL = 8I + 68FH
VPVDD = 5.0V
VPVDD = 4.2V
VPVDD = 3.7V
VPVDD = 5.0V
VPVDD = 4.2V
VPVDD = 3.7V
VPVDD = 5.0V
VPVDD = 4.2V
VPVDD = 3.7V
VPVDD = 5.0V
VPVDD = 4.2V
VPVDD = 3.7V
3.2
2.2
1.7
2.6
1.8
1.4
W
1.8
1.2
0.96
1.4
1
0.8
Total Harmonic Distortion
Plus Noise
THD+N fIN = 1kHz
RL = 4I
POUT = 1W
RL = 8I
POUT = 0.7W
0.03 0.1
%
0.03
Oscillator Frequency
Spread-Spectrum Bandwidth
Efficiency
Noise
Output Current Limit
Thermal Shutdown Level
fOSC
E
POUT = 1.75W, RL = 8I
AV = 12dB
AV = 9dB
VN A-weighted (Note 3) AV = 6dB
AV = 3dB
AV = 0dB
ILIM
300
±12.5
93
31
26
23
21
19
2.8
155
kHz
kHz
%
FVRMS
A
NC
Thermal Shutdown Hysteresis
DIGITAL INPUT (SHDN)
Input-Voltage High
Input-Voltage Low
Input Leakage Current
VINH
VINL
VPVDD = 2.5V to 5.5V
VPVDD = 2.5V to 5.5V
TA = +25NC
15
NC
1.4
V
0.4
V
Q1
FA
Note 1: This device is 100% production tested at +25NC. All temperature limits are guaranteed by design.
Note 2: Testing performed with a resistive load in series with an inductor to simulate an actual speaker load. For RL = 4I,
L = 33FH. For RL = 8I, L = 68FH.
Note 3: Amplifier inputs AC-coupled to ground.
Note 4: Mode transitions controlled by SHDN.
Maxim Integrated
3
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