MAX9875 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
MAX9875
Maxim Integrated
MAX9875 Datasheet PDF : 30 Pages
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Low RF Susceptibility, Mono Audio
Subsystem with DirectDrive Headphone Amplifier
ELECTRICAL 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. SDA and
SCL pullup voltage = 3.3V. ZSPK = ∞, RHP = ∞. C1 = C2 = CBIAS = 1µF. TA = TMIN to TMAX, unless otherwise noted. Typical values are
at TA = +25°C.) (Note 3)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
Output Frequency
Current Limit
Efficiency
Speaker Gain
Output Noise
Spread-spectrum modulation mode,
OSC = 00
Fixed-frequency mode, OSC = 01
Fixed-frequency mode, OSC = 10
η
POUT = 600mW, f = 1kHz
AV
A-weighted, OUTMODE = 1, ∆IN_ = 0
(Note 4)
1176
±60
kHz
1100
700
1.5
A
87
%
11.5 12.0 12.5
dB
63
µVRMS
HEADPHONE AMPLIFIERS (OUTMODE = 2)
Output Offset Voltage
VOS
Click-and-Pop Level
KCP
TA = +25°C (volume at mute)
TA = +25°C (volume at 0dB)
Peak voltage, TA =
+25°C, A-weighted,
Into shutdown
32 samples per
second. volume at
mute (Note 4)
Out of shutdown
±0.15 ±0.6
mV
±1.6
-80
dBV
-80
PVDD = VDD = 2.7V
70
85
to 5.25V
f = 217Hz,
84
Power-Supply Rejection Ratio
(Note 4)
PSRR
TA = +25°C, PVDD = VRIPPLE = 100mVP-P
VDD
f = 1kHz,
80
dB
VRIPPLE = 100mVP-P
Output Power
Headphone Gain
Channel-to-Channel Gain
Tracking
Total Harmonic Distortion Plus
Noise
Signal-to-Noise Ratio
f = 20kHz,
62
VRIPPLE = 100mVP-P
POUT
AV
THD+N ≤ 1%
RHP = 16Ω
RHP = 32Ω
53
mW
27
-0.4
0
+0.4
dB
TA = +25°C, HPL to HPR, volume at 0dB,
OUTMODE = 2, 5; ∆IN_ = 0
±0.3 ±2.5
%
THD+N
RHP = 32Ω (POUT = 10mW, f = 1kHz)
RHP = 16Ω (POUT = 10mW, f = 1kHz),
TA = +25°C
0.016
%
0.03
A-weighted,
OUTMODE = 2, 3,
∆IN_ = 0
(single-ended)
98
5, 6; RHP = 16Ω
∆IN_ = 1 (differential)
98
SNR
dB
A-weighted, RHP = ∆IN_ = 0
96
16Ω, OUTMODE = (single-ended)
8, 9
∆IN_ = 1 (differential)
96
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