Electrical characteristics (continued) – Rainbow Electronics MAX98302 User Manual
Page 3
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MAX98302
Stereo 2.4W Class D Amplifier
ELECTRICAL CHARACTERISTICS (continued)
(V
PVDD
= V
SHDN
= 5.0V, V
PGND
= 0V, AV = 12dB (GAIN = PVDD), R
L
= J, R
L
connected between OUT_+ to OUT_-, 20Hz to 22kHz
AC measurement bandwidth, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
= +25NC.) (Notes 2, 3)
Note 2: All devices are 100% production tested at T
A
= +25NC. All temperature limits are guaranteed by design.
Note 3: Testing performed with a resistive load in series with an inductor to simulate an actual speaker load. For R
L
= 4I,
L = 33FH. For R
L
= 8I, L = 68FH.
Note 4: Amplifier inputs AC-coupled to ground.
Note 5: Mode transitions controlled by SHDN.
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Click and Pop
K
CP
Peak voltage, A-weighted,
32/samples per second,
R
L
= 8I + 68FH
(Notes 4, 5)
Into shutdown
-54
dBV
Out of shutdown
-54
Common-Mode Rejection Ratio
CMRR
f
IN
= 1kHz, input referred
62
dB
Crosstalk
P
OUT
= 300mW,
R
L
= 8I + 68FH
f = 1kHz
92
dB
f = 10kHz
80
Power-Supply Rejection Ratio
(Note 4)
PSRR
V
PVDD
= 2.6V to 5.5V, T
A
= +25NC
50
67
dB
V
RIPPLE
= 200mV
P-P
,
R
L
= 8I + 68FH
f = 217Hz
67
f = 1kHz
65
f = 10kHz
58
Output Power
P
OUT
THD+N = 10%,
f
IN
= 1kHz
R
L
= 4I + 33FH
2.4
W
R
L
= 8I + 68FH
1.6
R
L
= 8I + 68FH,
V
PVDD
= 3.7V
0.87
THD+N = 1%,
f
IN
= 1kHz
R
L
= 4I + 33FH
2
W
R
L
= 8I +68FH
1.25
R
L
= 8I + 68FH,
V
PVDD
= 3.7V
0.68
Total Harmonic Distortion Plus
Noise
THD+N
f
IN
= 1kHz
R
L
= 4I + 33FH,
V
PVDD
= 1W
0.04
%
R
L
= 8I + 68FH
P
OUT
= 0.5W
0.04
Oscillator Frequency
f
OSC
300
kHz
Spread-Spectrum Bandwidth
±7
kHz
Efficiency
E
THD+N = 1%, f = 1kHz, R
L
= 8I + 68FH
83
%
Output Noise
V
N
A
V
= 6dB, A weighted (Note 4)
50
F
V
RMS
Output Current Limit
I
LIM
2
A
Thermal Shutdown Level
160
N
C
Thermal Shutdown Hysteresis
30
N
C
DIGITAL INPUT (SHDN GAIN)
Input Voltage High
V
INH
1.4
V
Input Voltage Low
V
INL
0.4
V
Input Leakage Current
T
A
= +25NC
±1
F
A