MAX9879(2009) 查看數據表（PDF） - Maxim Integrated
零件编号
产品描述 (功能)
生产厂家
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
ELECTRICAL CHARACTERISTICS (continued)
(VDD = VPVDDL = VPVDDR = 3.7V, VCCIO = 1.8V, VGND = VPGNDL = VPGNDR = 0. Single-ended inputs, preamp = 0, volume controls =
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 = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.)
(Notes 3, 4)
PARAMETER
Common-Mode Rejection Ratio
Input DC Voltage
Bias Voltage
SPEAKER AMPLIFIER
Output Offset Voltage
Click-and-Pop Level
SYMBOL
CONDITIONS
MIN
CMRR fIN = 1kHz (differential
input mode)
Preamp = 0
Preamp = 5.5dB
Preamp = 20dB
IN__ inputs
1.22
VBIAS
1.13
TYP MAX UNITS
58
55
dB
43
1.3 1.38
V
1.2 1.272
V
TA = +25°C (volume at mute)
VOS
TA = +25°C (volume at 0dB, ENA = 1 and
ENB = 0 or ENB = 1 and ENA = 0, ΔIN_ = 0)
±0.5
±4
mV
±4.5
mV
Peak voltage,
TA = +25°C
Into shutdown
-70
KCP A-weighted, 32 samples
dBV
per second, volume at Out of shutdown
-70
mute (Note 5)
PVDD_ = VDD
50
76
= 2.7V to 5.5V
Power-Supply Rejection Ratio
(Note 5)
Output Power
Total Harmonic Distortion + Noise
Signal-to-Noise Ratio
PSRR
POUT
THD+N
SNR
TA = +25°C
f = 217Hz,
100mVP-P ripple
f = 1kHz,
100mVP-P ripple
f = 20kHz,
100mVP-P ripple
THD+N ≤ 1%, RSPK =
8Ω
VDD = 3.7V
VDD = 3.3V
VDD = 3.0V
f = 1kHz, POUT = 350mW, TA = +25°C,
RSPK = 8Ω
A-weighted, ENA = 1
and ENB = 0 or ENB = 1
and ENA = 0
ΔIN_ = 0
(single-ended)
ΔIN_ = 1
(differential)
A-weighted ENA =
ENB = 1
ΔIN_ = 0
(single-ended)
ΔIN_ = 1
(differential)
72
dB
68
55
715
565
mW
470
0.04
0.2
%
92
94
dB
88
92
Output Frequency
700
±40
kHz
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