Datasheet

Stereo, High-Power, Class D Amplifiers
MAX98400A/MAX98400B
5
ELECTRICAL CHARACTERISTICS (continued)
(V
PVDD
= 18V, C
IN
= 1FF, V
SHDN
= 5V, LIM_TH = V
S
, TEMPLOCK = unconnected; G1 = GND, G2 = open (gain = 20.1dB), C
REL
= 1FF, C1 = C2 = 1FF, R
L
= J, AC measurement bandwidth 20Hz to 20kHz, differential input signal, 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
POWER STAGE
Shutdown to Full Operation t
SON
11 ms
Gain Accuracy
Q0.8 Q4
%
Left-to-Right Gain Matching All gain settings
Q2
%
Crosstalk
1kHz -85
dB
10kHz -68
Output Offset Voltage V
OS
T
A
= +25NC Q8 Q45
mV
Click-and-Pop Level K
CP
Peak voltage,
32 samples/s,
A-weighted,
T
A
= +25NC (Notes 4, 5)
Into
shutdown
-47
dBV
Out of
shutdown
-56
PVDD Power-Supply Rejection
Ratio
PSRR
PVDD
V
PVDD
= 8V to 28V 52 63
dB1kHz, 100mV
P-P
ripple 67
10kHz, 100mV
P-P
ripple 57
V
S
Power-Supply Rejection Ratio PSRR
VS
V
S
= 4.75V to 5.5V 39 55
dB1kHz, 100mV
P-P
ripple 50
10kHz, 100mV
P-P
ripple 40
MAX98400A Output Power P
OUT
Stereo, R
L
= 8I, 10% THD+N,
f
IN
= 1kHz (Note 3)
22
W
Mono, R
L
= 4I, 10% THD+N,
f
IN
= 1kHz (Note 3)
44
MAX98400B Output Power P
OUT
Stereo, R
L
= 8I, 10% THD+N,
f
IN
= 1kHz (Note 3)
15
Total Harmonic Distortion Plus
Noise
THD+N
P
OUT
= 0.1W to P
OUT
/2, f
IN
= 20Hz to
20kHz, R
L
= 8I
0.3
%
P
OUT
/2, f
IN
= 1kHz, R
L
= 8I
0.03
Output Noise V
N
A-weighted 100
FV
RMS
Efficiency
E
P
OUT
= 2x20W, R
L
= 8I (MAX98400A)
f
IN
= 1kHz (Note 3)
90 %
Current Limit I
LIM
3.5 5 A
Output FET Resistance R
DSON
0.4
I
Switching Frequency f
SW
265 330 395 kHz
Peak Output Voltage V
PVDD
= 28V 20 26 V
LIMITER
Attack Time V
LIM_TH
= 0V 240 500
Fs
Release Time V
LIM_TH
= 0V 0.8 s
Maximum Trigger Level V
PVDD
= 14V (Note 6) 4 dBFS
Minimum Trigger Level (Note 7) -6 dBFS
Trigger Level V
LIM
_
TH
= 0V -1 0 +1 dBFS
Compression Range V
LIM_TH
= 0V -12 dB