MAX9775 查看數據表（PDF） - Maxim Integrated
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产品描述 (功能)
生产厂家
MAX9775
Maxim Integrated
MAX9775 Datasheet PDF : 37 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.)
OUTPUT POWER
vs. SUPPLY VOLTAGE
2200
2000
RL = 4Ω
f = 1kHz
1800
1600
THD+N = 10%
1400
1200
1000
800
THD+N = 1%
600
400
200
0
2.7 3.2 3.7 4.2 4.7 5.2
SUPPLY VOLTAGE (V)
OUTPUT POWER
vs. SUPPLY VOLTAGE
1600
RL = 8Ω
1400 f = 1kHz
1200
THD+N = 10%
1000
800
600
THD+N = 1%
400
200
0
2.7 3.2 3.7 4.2 4.7 5.2
SUPPLY VOLTAGE (V)
OUTPUT POWER
vs. LOAD
2.5
VDD = 5V
f = 1kHz
2.0
THD+N = 10%
1.5
1.0
THD+N = 1%
0.5
0
1
10
100
LOAD (Ω)
OUTPUT POWER
vs. LOAD
1000
VDD = 3.3V
f = 1kHz
800
THD+N = 10%
600
400
THD+N = 1%
200
0
1
10
LOAD (Ω)
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY
0
VDD = 3.3V
-10 VIN = 100mVP-P
-20 RL = 8Ω
-30
OUTR
-40
-50
-60
-70
OUTL
-80
-90
-100
100
10
100
1k
10k
100k
FREQUENCY (Hz)
CROSSTALK vs. FREQUENCY
0
-10 OUT_ = 1VP-P
-20 RL = 8Ω
-30
-40
-50
RIGHT TO LEFT
-60
-70
-80
-90
-100
LEFT TO RIGHT
-110
-120
10
100
1k
10k
100k
FREQUENCY (Hz)
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