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.)
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. OUTPUT POWER
100
VDD = 5V
RL = 8Ω
10
f = 1kHz
1
f = 10kHz
0.1
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. OUTPUT POWER
100
VDD = 3.3V
RL = 4Ω
10
f = 1kHz
1
f = 10kHz
0.1
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. OUTPUT POWER
100
VDD = 3.3V
RL = 8Ω
10
f = 1kHz
1
0.1
f = 10kHz
0.01
f = 20Hz
0.01
f = 20Hz
0.01
f = 20Hz
0.001
0
0.3 0.6 0.9 1.2 1.5
OUTPUT POWER (W)
0.001
0
0.2
0.4
0.6
OUTPUT POWER (W)
0.001
0.8
0
0.2
0.4
0.6
OUTPUT POWER (W)
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. OUTPUT POWER
100
VDD = 5V
RL = 8Ω
10 f = 1kHz
1
SSM
0.1
0.01
FFM
0.001
0
0.3 0.6 0.9 1.2 1.5
OUTPUT POWER (W)
100
90
80
70
60
50
40
30
20
10
0
0
EFFICIENCY
vs. OUTPUT POWER
RL = 8Ω
RL = 4Ω
VDD = 5V
fIN = 1kHz
POUT = POUTL + POUTR
0.8 1.6 2.4 3.2 4.0
OUTPUT POWER (W)
100
90
80
70
60
50
40
30
20
10
0
0
EFFICIENCY
vs. OUTPUT POWER
RL = 8Ω
RL = 4Ω
VDD = 3.3V
fIN = 1kHz
POUT = POUTL + POUTR
0.4 0.8 1.2 1.6 2.0
OUTPUT POWER (W)
8 _______________________________________________________________________________________
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