MAX9877AERP 데이터 시트보기 (PDF) - Maxim Integrated
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MAX9877AERP
Maxim Integrated
MAX9877AERP Datasheet PDF : 31 Pages
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Low RF Susceptibility, Mono Audio
Subsystem with DirectDrive Headphone Amplifier
Typical Operating Characteristics (continued)
(VDD = PVDD = 3.7V, VGND = VPGND = 0V. Single-ended inputs, preamp gain = 0dB, volume controls = 0dB, OSC = 00, BYPASS =
0, SHDN = 1. Speaker loads (ZSPK) connected between OUT+ and OUT-. Headphone loads (RHP) connected from HPL or HPR to
GND. ZSPK = ∞, RHP = ∞. C1 = C2 = CBIAS = 1µF. TA = +25°C, unless otherwise noted.)
EFFICIENCY
vs. OUTPUT POWER
100
90
80
70
60
ZSPK = 8Ω + 68µH ZSPK = 4Ω + 33µH
50
40
OUTPUT POWER
vs. SUPPLY VOLTAGE
3.5
VDD = PVDD
3.0 ZSPK = 4Ω + 33µH
DASHED LINES ARE LIMITED
2.5 BY THE ABS. MAX RATINGS
10% THD+N
2.0
1.5
OUTPUT POWER
vs. SUPPLY VOLTAGE
2.0
1.8
VDD = PVDD
ZSPK = 8Ω + 68µH
1.6
1.4
1.2
10% THD+N
1.0
0.8
30
VDD = PVDD = 3V
1.0
20
fIN = 1kHz
DASHED LINES ARE LIMITED
0.5
10
BY THE ABS. MAX RATINGS
1% THD+N
0.6
1% THD+N
0.4
0.2
0
0
200 400 600 800 1000
OUTPUT POWER (mW)
0
2.5 3.0 3.5 4.0 4.5 5.0 5.5
SUPPLY VOLTAGE (V)
0
2.5 3.0 3.5 4.0 4.5 5.0 5.5
SUPPLY VOLTAGE (V)
OUTPUT POWER
vs. LOAD RESISTANCE
1.8
VDD = PVDD = 3.7V
1.6
fIN = 1kHz
1.4
ZSPK = LOAD + 68µH
1.2
1.0
0.8
10% THD+N
0.6
1% THD+N
0.4
0.2
0
0 10 20 30 40 50 60 70 80 90 100
LOAD RESISTANCE (Ω)
OUTPUT POWER
vs. LOAD RESISTANCE
1.2
VDD = PVDD = 3V
1.0
fIN = 1kHz
ZSPK = LOAD + 68µH
0.8
0.6
10% THD+N
0.4
1% THD+N
0.2
0
0 10 20 30 40 50 60 70 80 90 100
LOAD RESISTANCE (Ω)
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY
0
VDD = PVDD = 3.7V
-10 VRIPPLE = 100mVP-P
-20 INPUTS AC-COUPLED TO GND
-30
-40
-50
-60
-70
-80
-90
-100
10
100
1k
10k
100k
FREQUENCY (Hz)
IN-BAND OUTPUT SPECTRUM
0
fOSC = 1100kHz
-20 fIN = 1kHz
-40
-60
-80
-100
-120
-140
0
5
10
15
20
FREQUENCY (kHz)
IN-BAND OUTPUT SPECTRUM
0
fOSC = 700kHz
-20 fIN = 1kHz
-40
-60
-80
-100
-120
-140
0
5
10
15
20
FREQUENCY (kHz)
10 ______________________________________________________________________________________
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