MAX9723(2005) 查看數據表（PDF） - Maxim Integrated
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产品描述 (功能)
生产厂家
MAX9723
(Rev.:2005)
(Rev.:2005)
Maxim Integrated
MAX9723 Datasheet PDF : 23 Pages
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Stereo DirectDrive Headphone Amplifier with
BassMax, Volume Control, and I2C
ELECTRICAL CHARACTERISTICS (continued)
(VDD = SHDN = 3V, PGND = SGND = 0V, C1 = C2 = 1µF, BB_ = 0V. gain = 0dB, maximum volume, BassMax disabled. Load connect-
ed between OUT_ and SGND where specified. TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1)
PARAMETER
Output Power
Total Harmonic Distortion Plus
Noise
Maximum Gain
Signal-to-Noise Ratio
Slew Rate
Capacitive Drive
Output Resistance in Shutdown
SYMBOL
CONDITIONS
POUT
THD+N
AMAX
THD+N = 1%,
fIN = 1kHz
RL = 32Ω
RL = 16Ω (Note 5)
RL = 16Ω, POUT = 35mW, fIN = 1kHz
RL = 32Ω, POUT = 45mW, fIN = 1kHz
MAX9723A/
MAX9723B
Gain range bit 5 = 1
Gain range bit 5 = 0
MAX9723C/
MAX9723D
Gain range bit 5 = 1
Gain range bit 5 = 0
SNR
RL = 32Ω,
VOUT = 1VRMS
BW = 22Hz to 22kHz
A-weighted
SR
No sustained oscillations
ROUT_SHDN
VSHDN = 0V, measured from OUT_ to
SGND
MIN TYP MAX UNITS
59
mW
38
60
0.006
%
0.004
0
dB
-5
+6
dB
+1
99
dB
100
0.35
V/µs
300
pF
20
kΩ
Output Capacitance in Shutdown
COUT_SHDN
VSHDN = 0V, measured from OUT_ to
SGND
60
pF
Click/Pop Level
RL = 32Ω,
peak voltage,
A-weighted,
MAX9723A/
MAX9723B
Into
shutdown
Out of
shutdown
-69
-71
KCP
32 samples
Into
per second MAX9723C/ shutdown
-70
dB
(Notes 2, 4) MAX9723D Out of
-69
shutdown
Charge-Pump Switching
Frequency
fCP
505
600
700
kHz
Crosstalk
XTALK
DIGITAL INPUTS (SHDN, SDA, SCL)
Input High Voltage
VIH
L to R or R to L, f = 10kHz,
VOUT = 1VP-P, RL = 32Ω, both channels
loaded
Input Low Voltage
Input Leakage Current
DIGITAL OUTPUTS (SDA)
Output Low Voltage
Output High Current
VIL
VOL
IOL = 3mA
IOH
VSDA = VDD
80
dB
0.7 x
VDD
V
0.3 x
V
VDD
±1
µA
0.4
V
1
µA
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