Datasheet

MAX98355A/MAX98355B
PCM Input Class D Audio Power Amplifiers
6Maxim Integrated
ELECTRICAL CHARACTERISTICS (continued)
(V
DD
= 5V, V
GND
= 0V, GAIN = V
DD
(+6dB). BCLK = 3.072MHz, LRCLK = 48kHz, speaker loads (Z
SPK
) connected between OUTP
and OUTN, Z
SPK
= J, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
= +25NC.) (Note 2)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
AUDIO MODE FIR LOWPASS FILTER (30kHz < LRCLK < 50kHz)
Passband Cutoff f
PLP
Ripple limit cutoff
0.43
x f
S
Hz-3dB cutoff
0.47
x f
S
-6.02dB cutoff
0.5
x f
S
Stopband Cutoff f
SLP
0.58
x f
S
Hz
Stopband Attenuation f > f
SLP
60 dB
AUDIO MODE FIR LOWPASS FILTER (LRCLK > 50kHz)
Passband Cutoff f
PLP
Ripple limit cutoff
0.24
x f
S
Hz
-3dB cutoff
0.31
x f
S
Stopband Cutoff f
SLP
0.477
x f
S
Hz
Stopband Attenuation f < f
SLP
60 dB
DIGITAL AUDIO INTERFACE
Resolution
I
2
S/left justified mode 16/24/32
Bits
TDM mode 16
BCLK Frequency Range f
BCLK
BCLK must be 32, 48, or 64X of LRCLK 0.2432 6.4512 MHz
BCLK High Time t
BCLKH
40 ns
BCLK Low Time t
BCLKL
40 ns
Maximum Low Frequency
BCLK and LRCLK Jitter
RMS jitter below 40kHz 0.5
ns
Maximum High Frequency
BCLK and LRCLK Jitter
RMS jitter above 40kHz 12
Input High Voltage V
IH
Digital audio inputs 1.3 V
Input Low Voltage V
IL
Digital audio inputs 0.6 V