MAX9875 데이터 시트보기 (PDF) - Maxim Integrated
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MAX9875
Maxim Integrated
MAX9875 Datasheet PDF : 30 Pages
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Low RF Susceptibility, Mono Audio
Subsystem with DirectDrive Headphone Amplifier
Typical Operating Characteristics (continued)
(VDD = VPVDD = 3.7V, VGND = VPGND = 0V. Single-ended inputs, preamp gain = 0dB, volume controls = 0dB, OSC = 00, 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.)
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. OUTPUT POWER
10
VDD = VPVDD = 3.7V
ZSPK = 4Ω + 33µH
DASHED LINES ARE LIMITED
BY THE ABS. MAX RATINGS
1
fIN = 20Hz fIN = 6kHz
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. OUTPUT POWER
10
VDD = VPVDD = 3V
ZSPK = 8Ω + 68µH
1
fIN = 20Hz
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. OUTPUT POWER
10
VDD = VPVDD = 3V
ZSPK = 4Ω + 33µH
DASHED LINES ARE LIMITED
BY THE ABS. MAX RATINGS
1
fIN = 20Hz
fIN = 6kHz
0.1
0.01
0
fIN = 1kHz
0.5
1.0
OUTPUT POWER (W)
0.1
0.01
1.5
0
fIN = 1kHz
fIN = 6kHz
200
400
600
OUTPUT POWER (mW)
0.1
fIN = 1kHz
0.01
0
0.2 0.4 0.6 0.8 1.0 1.2
OUTPUT POWER (W)
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. OUTPUT POWER
1
VDD = VPVDD = 3.7V
fIN = 1kHz
ZSPK = 8Ω + 68µH
fOSC = 1176kHz SSM
0.1
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. OUTPUT POWER
1
fOSC = 1100kHz
fOSC = 700kHz
0.1
fOSC = 1176kHz SSM
EFFICIENCY
vs. OUTPUT POWER
100
90
80
70
60
ZSPK = 8Ω + 68µH ZSPK = 4Ω + 33µH
50
40
0.01
0
fOSC = 700kHz
fOSC = 1100kHz
200
400
600
800
OUTPUT POWER (mW)
0.01
0
VDD = VPVDD = 3.7V
fIN = 6kHz
ZSPK = 8Ω + 68µH
200
400
600
800
OUTPUT POWER (mW)
30
20
10
0
0
VDD = VPVDD = 5V
fIN = 1kHz
DASHED LINES ARE LIMITED
BY THE ABS. MAX RATINGS
0.5 1.0 1.5 2.0 2.5 3.0
OUTPUT POWER (W)
100
90
80
70
60
50
40
30
20
10
0
0
EFFICIENCY
vs. OUTPUT POWER
ZSPK = 8Ω + 68µH ZSPK = 4Ω + 33µH
VDD = VPVDD = 3.7V
fIN = 1kHz
DASHED LINES ARE LIMITED
BY THE ABS. MAX RATINGS
0.5
1.0
1.5
2.0
OUTPUT POWER (W)
EFFICIENCY
vs. OUTPUT POWER
100
fOSC = 700kHz
90
80
70
60
fOSC = 1176kHz AND 1100kHz
50
40
30
20
10
0
0
VDD = VPVDD = 3.7V
fIN = 1kHz
ZSPK = 8Ω + 68µH
200 400 600 800 1000
OUTPUT POWER (mW)
_______________________________________________________________________________________ 9
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