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
Signal-to-Noise Ratio
Slew Rate
Capacitive Drive
Crosstalk
Charge-Pump Frequency
VOLUME CONTROL
Minimum Setting
Maximum Setting
Input Gain
Mute Attenuation
SYMBOL
CONDITIONS
MIN
SNR
A-weighted,
RHP = 16Ω
ENA = 1 and
ENB = 0 or
ENA = 1 and
ENB = 0
ENA = 1 and
ENB = 1
ΔIN_ = 0
ΔIN_ = 1
ΔIN_ = 0
ΔIN_ = 1
SR
CL
HPL to HPR, HPR to HPL, f = 20Hz to 20kHz
TYP MAX UNITS
98
98
dB
96
96
0.35
V/µs
100
pF
67
dB
350
kHz
±20
_VOL = 1
_VOL = 31
Input A or B
f = 1kHz, _VOL = 0
PGAIN_ = 00
PGAIN_ = 01
PGAIN_ = 10
Speaker
Headphone
-75
dB
0
dB
0
5.5
dB
20
100
dB
110
Zero-Crossing Detection Time
Out
ANALOG SWITCH
ZCD = 1
60
ms
On-Resistance
RON
IRXIN__ = 20mA,
RXIN_ = 0 and VDD,
BYPASS = 1
TA = +25°C
TA = TMIN to TMAX
2.4
4
Ω
5.2
Total Harmonic Distortion + Noise
VDIFRXIN = 2VP-P,
Series resistance is
VCMRXIN = VDD/2,
10Ω per switch
f = 1kHz, BYPASS = 1 No series resistors
0.3 0.25
%
0.3
Off-Isolation
BYPASS = 0, RXIN+ and RXIN- to GND =
50Ω, RSPK = 8Ω, f = 10kHz, referred to
88
dB
speaker output signal
DIGITAL INPUTS (SDA, SCL, SHDN)
Input Voltage High (SDA, SCL)
VIH
0.7 x
V
VCCIO
Input Voltage Low (SDA, SCL)
Input Hysteresis (SDA, SCL)
VIL
VHYS
0.3 x
V
VCCIO
200
mV
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