MAX9779 查看數據表（PDF） - Maxim Integrated
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MAX9779 Datasheet PDF : 19 Pages
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2.6W Stereo Audio Power Amplifier and
DirectDrive Headphone Amplifier
Typical Operating Characteristics (continued)
(Measurement BW = 22Hz to 22kHz, TA = +25°C, unless otherwise noted.)
CROSSTALK vs. FREQUENCY
(SPEAKER MODE)
0
-10
VDD = 5V
VRIPPLE = 200mVP-P
-20 RL = 4Ω
-30
-40
-50
-60
-70
-80
LEFT TO RIGHT
-90
-100
RIGHT TO LEFT
-110
-120
10
100
1k
10k
100k
FREQUENCY (Hz)
SHDN
OUT_+
AND
OUT_-
TURN-ON RESPONSE
(SPEAKER MODE)
MAX9779 toc11
5V/div
2V/div
OUT_+
- OUT_-
RL = 8Ω
20ms/div
100mV/div
SHDN
OUT_+
AND
OUT_-
OUT_+
- OUT_-
TURN-OFF RESPONSE
(SPEAKER MODE)
MAX9779 toc12
5V/div
2V/div
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. FREQUENCY (HEADPHONE MODE)
10
VDD = 5V
RL = 16Ω
1 AV = 3dB
OUTPUT POWER = 90mW
0.1
RL = 8Ω
20ms/div
0.01
20mV/div
0.001
OUTPUT POWER = 30mW
0.0001
10
100
1k
10k
100k
FREQUENCY (Hz)
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. FREQUENCY (HEADPHONE MODE)
10
VDD = 5V
RL = 32Ω
1 AV = 3dB
OUTPUT POWER = 45mW
0.1
0.01
0.001
OUTPUT POWER = 10mW
0.0001
10
100
1k
10k
100k
FREQUENCY (Hz)
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. FREQUENCY (HEADPHONE MODE)
10
VDD = 3.3V
RL = 16Ω
1 AV = 3dB
OUTPUT POWER = 30mW
0.1
0.01
OUTPUT POWER = 10mW
0.001
0.0001
10
100
1k
10k
100k
FREQUENCY (Hz)
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. FREQUENCY (HEADPHONE MODE)
10
VDD = 3.3V
RL = 32Ω
1 AV = 3dB
OUTPUT POWER = 45mW
0.1
0.01
0.001
OUTPUT POWER = 10mW
0.0001
10
100
1k
10k
100k
FREQUENCY (Hz)
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. OUTPUT POWER (HEADPHONE MODE)
1000
VDD = 5V
100
RL = 16Ω
AV = 3dB
10
1
fIN = 10kHz
0.1
0.01
fIN = 20Hz
fIN = 1kHz
0.001
0
25 50 75 100 125 150
OUTPUT POWER (mW)
6 _______________________________________________________________________________________
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