MAX9721 查看數據表（PDF） - Maxim Integrated
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MAX9721 Datasheet PDF : 14 Pages
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1V, Fixed-Gain, DirectDrive, Stereo Headphone
Amplifier with Shutdown
Typical Operating Characteristics (continued)
(VDD = 1.5V, PGND = SGND = 0V, VSHDN = 1.5V, VSS = PVSS, C1 = C2 = 1µF, CIN = 1µF, THD+N measurement bandwidth = 22Hz
to 22kHz, TA = +25°C, unless otherwise noted.) (See the Functional Diagram.)
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. OUTPUT POWER
100
VDD = 1V
RL = 16Ω
10 AV = -2V/V
fIN = 20Hz
fIN = 1kHz
1
fIN = 10kHz
0.1
0.01
0.001
0
5
10
15
OUTPUT POWER (mW)
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. OUTPUT POWER
100
VDD = 1V
RL = 32Ω
10 AV = -2V/V
fIN = 20Hz
fIN = 1kHz
1
fIN = 10kHz
0.1
0.01
0.001
0
5
10
15
OUTPUT POWER (mW)
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY
-10
VDD = 1.5V
-20 RL = 32Ω
-30
-40
-50
-60
-70
-80
-90
-100
-110
10
100
1k
10k
100k
FREQUENCY (Hz)
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY
0
VDD = 1V
-10 RL = 32Ω
-20
-30
-40
-50
-60
-70
-80
-90
-100
10
100
1k
10k
100k
FREQUENCY (Hz)
OUTPUT POWER
vs. SUPPLY VOLTAGE
50
45
fIN = 1kHz
RL = 32Ω
40 BOTH INPUTS
DRIVEN IN-PHASE
35
30
THD+N = 10%
25
20
15
10
THD+N = 1%
5
0
0.9
1.1
1.3
1.5
SUPPLY VOLTAGE (V)
CROSSTALK vs. FREQUENCY
0
VDD = 1.5V
POUT = 5mW
-20 RL = 32Ω
-40
-60
LEFT TO RIGHT
-80
-100
-120
10
80
70
60
50
40
RIGHT TO LEFT
100
1k
10k
100k
FREQUENCY (Hz)
OUTPUT POWER
vs. LOAD RESISTANCE
THD+N = 10%
VDD = 1.5V
fIN = 1kHz
BOTH INPUTS
DRIVEN IN-PHASE
THD+N = 1%
30
20
10
0
10
100
1k
LOAD RESISTANCE (Ω)
OUTPUT POWER vs. SUPPLY VOLTAGE
80
fIN = 1kHz
70 RL = 16Ω
BOTH INPUTS
60 DRIVEN IN-PHASE
50
THD+N = 10%
40
30
20
10
0
0.9
THD+N = 1%
1.1
1.3
1.5
SUPPLY VOLTAGE (V)
OUTPUT POWER
vs. LOAD RESISTANCE
80
VDD = 1V
70 fIN = 1kHz
BOTH INPUTS
60 DRIVEN IN-PHASE
50
40
THD+N = 10%
30
THD+N = 1%
20
10
0
10
100
1k
LOAD RESISTANCE (Ω)
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