MAX9879 Ver la hoja de datos (PDF) - Maxim Integrated
Número de pieza
componentes Descripción
Fabricante
MAX9879 Datasheet PDF : 32 Pages
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MAX9879
Stereo Class D Audio Subsystem
with DirectDrive Headphone Amplifier
Typical Operating Characteristics (continued)
(VDD = VPVDDL = VPVDDR = 3.7V, VCCIO = 1.8V, VGND = VPGNDL = VPGNDR = 0. Single-ended inputs, preamp = 0dB, volume con-
trols = 0dB, BYPASS = 0, SHDN = 1. Speaker loads connected between OUT_+ and OUT_-. Headphone loads connected from HPL
or HPR to GND. RSPK = ∞, RHP = ∞. C1 = C2 = CBIAS = 1µF. TA = +25°C, unless otherwise noted.)
SPEAKER AMPLIFIERS (Headphone Disabled)
OUTPUT POWER vs. LOAD
1000
f = 1kHz
800
THD+N = 10%
600
400
THD+N = 1%
200
0
1
10
100
LOAD (Ω)
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY (SPEAKER MODE)
0
-10
RL = 8Ω
VRIPPLE = 100mVP-P
-20 INPUTS AC GROUNDED
-30
RIGHT
-40
-50
-60
-70
LEFT
-80
-90
-100
0.01
0.1
1
10
100
FREQUENCY (kHz)
CROSSTALK vs. FREQUENCY
0
RL = 8Ω
VIN = 1VP-P
-20
-40
-60
RIGHT TO LEFT
-80
-100
-120
0.01
LEFT TO RIGHT
0.1
1
10
100
FREQUENCY (kHz)
OUTPUT FREQUENCY SPECTRUM
SPEAKER MODE
0
VOUT = -60dBV
-20 f = 1kHz
RL = 8Ω
-40 UNWEIGHTED
-60
-80
-100
-120
-140
0
5
10
15
20
FREQUENCY (kHz)
WIDEBAND FREQUENCY SPECTRUM
(SPEAKER MODE)
0
-10
RBW = 1kHz
-20
INPUT AC GROUNDED
-30
-40
-50
-60
-70
-80
-90
-100
-110
-120
0
1
10
100
FREQUENCY (MHz)
MAX9879 toc19
MAX9879 toc20
SHDN
1V/div
SDA
2V/div
SCL
2V/div
OUT+ - OUT-
1V/div
400μs/div
10
2ms/div
Maxim Integrated
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