MAX9775(2008) 查看數據表（PDF） - Maxim Integrated
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产品描述 (功能)
生产厂家
MAX9775
(Rev.:2008)
(Rev.:2008)
Maxim Integrated
MAX9775 Datasheet PDF : 38 Pages
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2 x 1.5W, Stereo Class D Audio Subsystem
with DirectDrive Headphone Amplifier
Typical Operating Characteristics (continued)
(VDD = PVDD = CPVDD = 3.3V, GND = PGND = CPGND = 0V, SHDN = VDD, I2C default gain settings (INA gain = +20dB, INB gain =
INC gain = 0dB, volume setting = 0dB, mono path gain = 0dB, SHDN = 1, SSM = 1). Speaker load resistors (RLSP) are terminated
between OUT_+ and OUT_-, headphone load resistors are terminated to GND, unless otherwise stated. C1 = C2 = C3 = 1µF. TA =
+25°C, unless otherwise noted.)
CROSSTALK vs. INPUT AMPLITUDE
0
-10 fIN = 1kHz
-20
RL = 8Ω
GAIN = +12dB
-30
-40
-50
RIGHT TO LEFT
-60
-70
-80
-90
-100
-110
LEFT TO RIGHT
-120
0
0.1 0.2 0.3 0.4 0.5 0.6
INPUT AMPLITUDE (VRMS)
IN-BAND OUTPUT SPECTRUM
20
SSM MODE
0 RL = 8Ω
VDD = 3.3V
-20 fIN = 1kHz
UNWEIGHTED
-40
-60
-80
-100
-120
-140
0
5k
10k
15k
20k
FREQUENCY (Hz)
IN-BAND OUTPUT SPECTRUM
20
FFM MODE
0 RL = 8Ω
VDD = 3.3V
-20 fIN = 1kHz
UNWEIGHTED
-40
-60
-80
-100
-120
-140
0
5k
10k
15k
20k
FREQUENCY (Hz)
WIDEBAND OUTPUT SPECTRUM
FIXED-FREQUENCY MODE
20
0
-20
-40
-60
-80
-100
VDD = 5V
-120 RL = 8Ω
INPUTS AC GROUNDED
-140
0.1
1
10
100
1000
FREQUENCY (MHz)
WIDEBAND OUTPUT SPECTRUM
SPREAD-SPECTRUM MODE
20
0
-20
-40
-60
-80
-100 VDD = 5V
-120
RL = 8Ω
INPUTS AC GROUNDED
-140
0.1
1
10
100
1000
FREQUENCY (MHz)
MAX9775 SUPPLY CURRENT
vs. SUPPLY VOLTAGE
25
SP MODE
INPUTS AC GROUNDED
OUTPUTS UNLOADED
20
15
10
2.7 3.2 3.7 4.2 4.7 5.2
SUPPLY VOLTAGE (V)
10 ______________________________________________________________________________________
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