MAX9879(2009) データシートの表示（PDF） - Maxim Integrated
部品番号
コンポーネント説明
メーカー
MAX9879
(Rev.:2009)
(Rev.:2009)
Maxim Integrated
MAX9879 Datasheet PDF : 31 Pages
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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.)
HEADPHONE AMPLIFIERS (Speaker Disabled)
TOTAL HARMONIC DISTORTION + NOISE
vs. OUTPUT POWER (HEADPHONE MODE)
POWER DISSIPATION vs. OUTPUT POWER
(HEADPHONE MODE)
100
250
80
VDD = 3.7V
225 VDD = 3.0V
75
200
10
60
175
150
50
OUTPUT POWER vs. SUPPLY VOLTAGE
THD+N = 10%
THD+N = 10%
0.1
RL = 16Ω
0.01
0.001
0.1
RL = 32Ω
1
10
100
OUTPUT POWER (mW)
OUTPUT POWER vs. SUPPLY VOLTAGE
160
140
THD+N = 10%
120
100
80
THD+N = 1%
125
RL = 16Ω
100
75
50
RL = 32Ω
25
0
0
1
10
100
TOTAL OUTPUT POWER (mW)
OUTPUT POWER vs. LOAD RESISTANCE
(HEADPHONE MODE)
100
90
VDD = 3.3V
f = 1kHz
80
70
THD+N = 10%
60
50
40
30
20
10
RL = 32Ω
fIN = 1kHz
0
2.7 3.1 3.5 3.9 4.3 4.7 5.1 5.5
SUPPLY VOLTAGE (V)
OUTPUT POWER vs. LOAD RESISTANCE
(HEADPHONE MODE)
100
f = 1kHz
90
THD+N = 1%
80
70
50
C1 = C2 = 0.47μF
60
40
THD+N = 1%
30
40
RL = 16Ω
20
20
fIN = 1kHz
10
30
C1 = C2 = 1μF
20 C1 = C2 = 2.2μF
10
0
2.7 3.1 3.5 3.9 4.3 4.7 5.1 5.5
SUPPLY VOTAGE (V)
0
10
100
LOAD RESISTANCE (Ω)
0
10
100
LOAD RESISTANCE (Ω)
POWER SUPPLY REJECTION RATIO
vs. FREQUENCY (HEADPHONE MODE)
0
-10
VRIPPLE = 100mVP-P
INPUTS AC GROUNDED
-20
-30
-40
-50
-60
-70
LEFT
-80
-90
-100
0.01
0.1
RIGHT
1
10
100
FREQUENCY (kHz)
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY (HEADPHONE MODE)
0
VOUT = -60dB
-20 f =1kHz
RL = 32Ω
-40
-60
-80
-100
-120
-140
0
5
10
15
20
FREQUENCY (kHz)
CROSSTALK vs. FREQUENCY
(HEADPHONE MODE)
0
RL = 16Ω
-10 f = 1kHz
VIN = 1VP-P
-20
-30
-40
RIGHT TO LEFT
-50
LEFT TO RIGHT
-60
-70
-80
0.01
0.1
1
10
100
FREQUENCY (Hz)
12 ______________________________________________________________________________________
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