MAX9720 查看數據表（PDF） - Maxim Integrated
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MAX9720 Datasheet PDF : 21 Pages
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50mW, DirectDrive, Stereo Headphone
Amplifier with SmartSense and Shutdown
Typical Operating Characteristics (continued)
(VDD = 3V, THD+N bandwidth = 22Hz to 22kHz, MODE1 = MODE2 = VDD.)
OUTPUT POWER vs. LOAD RESISTANCE
160
f = 1kHz
140
THD+N = 1%
INPUTS
120
OUT OF
PHASE
100
80
60
40
INPUTS
20
IN PHASE
0
10
100
LOAD RESISTANCE (Ω)
OUTPUT POWER vs. LOAD RESISTANCE
160
f = 1kHz
140
THD+N = 10%
120
INPUTS
OUT OF
100
PHASE
80
60
INPUTS
40
IN PHASE
20
0
10
100
LOAD RESISTANCE (Ω)
OUTPUT POWER vs. LOAD RESISTANCE
40
VDD = 1.8V
35
f = 1kHz
THD+N = 1%
30
25
20
INPUTS
OUT OF
15
PHASE
10
INPUTS
5
IN PHASE
0
10
100
LOAD RESISTANCE (Ω)
OUTPUT POWER vs. LOAD RESISTANCE
40
35
30
INPUTS
OUT OF
25
PHASE
VDD = 1.8V
f = 1kHz
THD+N = 10%
20
15
INPUTS
10
IN PHASE
5
0
10
100
LOAD RESISTANCE (Ω)
POWER DISSIPATION vs. OUTPUT POWER
350
300
RL = 16Ω
250
200
150
100
50
0
0
RL = 32Ω
VDD = 3V
f = 1kHz
POUT = POUTL + POUTR
50 100 150 200 250
OUTPUT POWER (mW)
POWER DISSIPATION vs. OUTPUT POWER
125
100
RL = 16Ω
75
50
25
0
0
RL = 32Ω
VDD = 1.8V
f = 1kHz
POUT = POUTL + POUTR
20
40
60
80
OUTPUT POWER (mW)
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY
0
-10
-20
VDD = 3V
VRIPPLE = 200mVP-P
-30
-40
-50
-60
-70
-80
-90
-100
-110
-120
10
100
1k
10k
100k
FREQUENCY (Hz)
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY
0
-10
VDD = 1.8V
VRIPPLE = 200mVP-P
-20
-30
-40
-50
-60
-70
-80
-90
-100
10
100
1k
10k
100k
FREQUENCY (Hz)
CROSSTALK vs. FREQUENCY
0
-10
VDD = 3V
RL = 32Ω
-20 VIN = 200mVP-P
-30
-40
-50
-60
RIGHT-TO-LEFT
-70 CHANNEL
-80
-90
-100
LEFT-TO-RIGHT
-110
CHANNEL
-120
10
100
1k
10k
100k
FREQUENCY (Hz)
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