Datasheet

3Maxim Integrated
Mono 2.6W Class D Amplifier
MAX98300
ELECTRICAL CHARACTERISTICS (continued)
(V
PVDD
= V
SHDN
= 5.0V, V
PGND
= 0V, A
V
= 12dB (GAIN = PVDD), R
L
= J, R
L
connected between OUT+ to OUT-, AC measurement
bandwidth 20Hz to 22kHz, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
= +25NC.) (Notes 1, 2)
Note 1: All devices are 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 R
L
= 4I,
L = 33FH. For R
L
= 8I, L = 68FH.
Note 3: Amplifier inputs AC-coupled to ground.
Note 4: Mode transitions controlled by SHDN.
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Power-Supply Rejection Ratio
(Note 3)
PSRR
V
PVDD
= 2.6V to 5.5V, T
A
= +25NC
50 70
dB
V
RIPPLE
= 200mV
P-P
f = 217Hz 67
f = 20kHz 63
Output Power P
OUT
f
IN
= 1kHz, R
L
= 4I
THD+N = 1% 2.1
W
THD+N = 10% 2.6
f
IN
= 1kHz, R
L
= 8I
THD+N = 1% 1.35
THD+N = 10% 1.65
THD+N = 1%,
V
PVDD
= 3.7V
0.71
THD+N = 10%,
V
PVDD
= 3.7V
0.89
Total Harmonic Distortion Plus
Noise
THD+N f
IN
= 1kHz
R
L
= 4I
P
OUT
= 1W
0.05 %
R
L
= 8I
P
OUT
= 0.5W
0.04 %
Oscillator Frequency f
OSC
300 kHz
Spread-Spectrum Bandwidth
±10
kHz
Efficiency
E P
OUT
= 1.3W, R
L
= 8I
89 %
Noise V
N
A
V
= 0dB, A-weighted (Note 3) 36
FV
RMS
Output Current Limit I
LIM
2 A
Thermal Shutdown Level +160
NC
Thermal Shutdown Hysteresis 20
NC
DIGITAL INPUT (SHDN)
Input-Voltage High
V
INH
1.4 V
Input-Voltage Low V
INL
0.4 V
Input Leakage Current
T
A
= +25NC Q10 FA