MAX9724A(2007) Просмотр технического описания (PDF) - Maxim Integrated
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Компоненты Описание
производитель
MAX9724A
(Rev.:2007)
(Rev.:2007)
Maxim Integrated
MAX9724A Datasheet PDF : 19 Pages
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60mW, DirectDrive, Stereo Headphone Amplifier
with Low RF Susceptibility and Shutdown
Typical Operating Characteristics (continued)
(VDD = 5V, PGND = SGND = 0V, SHDN = VDD, C1 = C2 = 1µF, RL = ∞, gain = -1.5V/V (RIN = 20kΩ, RF = 30kΩ for the MAX9724A),
THD+N measurement bandwidth = 22Hz to 22kHz, both outputs driven in phase, TA = +25°C, unless otherwise noted.)
OUTPUT POWER
vs. SUPPLY VOLTAGE (TQFN ONLY)
120
fIN = 1kHz
RL = 32Ω
100
80
10% THD+N
60
40
20
1% THD+N
0
2.5 3.0 3.5 4.0 4.5 5.0 5.5
SUPPLY VOLTAGE (V)
OUTPUT POWER
vs. LOAD RESISTANCE (TQFN ONLY)
35
10% THD+N
30
VDD = 3V
fIN = 1kHz
25
20
15
1% THD+N
10
5
0
10
100
1000
LOAD RESISTANCE (Ω)
OUTPUT POWER
vs. LOAD RESISTANCE (TQFN ONLY)
100
90
THD+N = 10%
80
70
60
50
40
THD+N = 1%
30
20
10
VDD = 5V
fIN = 1kHz
0
10
100
LOAD RESISTANCE (Ω)
POWER DISSIPATION
vs. OUTPUT POWER (TQFN ONLY)
250
200
RL = 16Ω
150
RL = 32Ω
100
50
0
0
VDD = 3V
fIN = 1kHz
POUT = POUTL + POUTR
OUTPUTS IN PHASE
20
40
60
80
OUTPUT POWER (mW)
POWER-SUPPLY REJECTION
RATIO vs. FREQUENCY (TQFN ONLY)
0
RL = 32Ω
-20
-40
-60
VDD = 5V
-80
-100
-120
10
VDD = 3V
100
1k
10k
100k
FREQUENCY (Hz)
CROSSTALK vs. FREQUENCY
(TQFN ONLY)
0
POUT = 15mW
-20 RL = 16Ω
-40
-60
RIGHT TO LEFT
-80
-100
LEFT TO RIGHT
-120
10
100
1k
10k
100k
FREQUENCY (Hz)
OUTPUT POWER vs. LOAD RESISTANCE AND
CHARGE-PUMP CAPACITOR SIZE (TQFN ONLY)
80
C1 = C2 = 2.2µF
70
C1 = C2 = 1µF
60
50
40
30
20
0
C1 = C2 = 0.47µF
VDD = 5V
fIN = 1kHz
THD+N = 1%
50
100
150
LOAD RESISTANCE (Ω)
-40
-50
-60
-70
-80
-90
-100
-110
-120
-130
-140
0
OUTPUT SPECTRUM
vs. FREQUENCY (TQFN ONLY)
RL = 32Ω
VDD = 3V
fIN = 1kHz
VOUT = -60dBV
5
10
15
20
FREQUENCY (kHz)
SUPPLY CURRENT
vs. SUPPLY VOLTAGE (TQFN ONLY)
3.5
3.4
3.3
3.2
3.1
3.0
2.9
2.8
2.5
NO LOAD
INPUTS
GROUND
3.0 3.5 4.0 4.5 5.0 5.5
SUPPLY VOLTAGE (V)
_______________________________________________________________________________________ 5
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