MAX9877 데이터 시트보기 (PDF) - Maxim Integrated
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MAX9877
Maxim Integrated
MAX9877 Datasheet PDF : 30 Pages
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Low RF Susceptibility, Mono Audio
Subsystem with DirectDrive Headphone Amplifier
Typical Operating Characteristics
(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.)
GENERAL
SUPPLY CURRENT
vs. SUPPLY VOLTAGE
9
HEADPHONE ONLY
INPUTS AC-COUPLED TO GND
8 OUTMODE = 8
VSDA = VSCL = 3.3V
7
fOSC = 1176kHz SREAD-SPECTRUM MODE
6
5
4
2.5
fOSC = 700kHz
fOSC = 1100kHz
3.0 3.5 4.0 4.5 5.0 5.5
SUPPLY VOLTAGE (V)
SUPPLY CURRENT
vs. SUPPLY VOLTAGE
10
SPEAKER ONLY
INPUTS AC-COUPLED TO GND
9 OUTMODE = 7
VSDA = VSCL = 3.3V
8
fOSC = 1176kHz
SPREAD-SPECTRUM MODE
7
6
fOSC = 700kHz
5
fOSC = 1100kHz
4
2.5 3.0 3.5 4.0 4.5 5.0 5.5
SUPPLY VOLTAGE (V)
SUPPLY CURRENT
vs. SUPPLY VOLTAGE
13
HEADPHONE AND SPEAKER
INPUTS AC-COUPLED TO GND
12 OUTMODE = 9
VSDA = VSCL = 3.3V
11
10
9
8
7
2.5
fOSC = 700kHz
fOSC = 1176kHz
SPREAD-SPECTRUM MODE
fOSC = 1100kHz
3.0 3.5 4.0 4.5 5.0 5.5
SUPPLY VOLTAGE (V)
SHUTDOWN CURRENT
vs. SUPPLY VOLTAGE
14
INPUTS AC-COUPLED TO GND
13 VSDA = VSCL = 3.3V
12
11
10
9
8
7
2.5 3.0 3.5 4.0 4.5 5.0 5.5
SUPPLY VOLTAGE (V)
VOLUME ATTENUATION
vs. _VOL CONTROL CODE
20
0
-20
-40
-60
-80
fIN = 1kHz
-100 MEASURED AT HPL
AND HPR
-120
35 30 25 20 15 10 5 0
_VOL CONTROL CODE
_______________________________________________________________________________________ 7
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