Datasheet

MAX98357A/MAX98357B
PCM Input Class D Audio Power Amplifiers
12Maxim Integrated
Typical Operating Characteristics (continued)
(V
DD
= 5V, V
GND
= 0V, GAIN_SLOT = GND (+12dB). BCLK = 3.072MHz, LRCLK = 48kHz, speaker loads (Z
SPK
) connected between
OUTP and OUTN, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
= +25NC.)
0
10
20
30
40
50
60
70
80
90
100
10 100 1000 10000 100000
PSRR (dB)
FREQUENCY (Hz)
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY
toc27
0
10
20
30
40
50
60
70
80
90
100
2.5 3.0 3.5 4.0 4.5 5.0 5.5
PSRR (dB)
SUPPLY VOLTAGE (V)
POWER-SUPPLY REJECTION RATIO
vs. SUPPLY VOLTAGE
f
S
= 1kHz
toc28
TURN-ON RESPONSE
OUTPUT
1V/div
SD_MODE
1V/div
toc29
2ms/div
-140
-120
-100
-80
-60
-40
-20
0
20
0 5000 10000 15000 20000
AMPLITUDE (dBV)
FREQUENCY (Hz)
INBAND OUTPUT SPECTRUM
f
BCLK
= 512kHz
f
LRCLK
= 8kHz
Z
SPK
= 8μ + 68μ H
toc33
TURN-OFF RESPONSE
OUTPUT
1V/div
SD_MODE
1V/div
toc30
1ms/div
BCLK
2V/div
LRCLK
2V/div
OUTPUT
1V/div
toc30a
500µs/div
TURN-OFF RESPONSE
(STANDBY MODE)
-140
-120
-100
-80
-60
-40
-20
0
20
0 5000 10000 15000 20000
AMPLITUDE (dBV)
FREQUENCY (Hz)
INBAND OUTPUT SPECTRUM
f
BCLK
= 512kHz
f
LRCLK
= 8kHz
Z
SPK
= 8μ + 68μ H
toc31
BCLK
2V/div
LRCLK
2V/div
OUTPUT
1V/div
toc30b
2ms/div
TURN-ON RESPONSE
(STANDBY MODE)
-140
-120
-100
-80
-60
-40
-20
0
20
0 5000 10000 15000 20000
AMPLITUDE (dBV)
FREQUENCY (Hz)
INBAND OUTPUT SPECTRUM
f
BCLK
= 512kHz
f
LRCLK
= 8kHz
Z
SPK
= 8μ + 68μ H
toc32