MAX9723 Ver la hoja de datos (PDF) - Maxim Integrated
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MAX9723 Datasheet PDF : 26 Pages
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MAX9723
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 connected
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
SYMBOL
POUT
THD+N
AMAX
CONDITIONS
THD+N = 1%,
fIN = 1kHz
RL = 32Ω
RL = 16Ω (Note 5)
RL = 16Ω, POUT = 35mW, fIN = 1kHz
RL = 32Ω, POUT = 45mW, fIN = 1kHz
MAX9723A/
Gain range bit 5 = 1
MAX9723B
Gain range bit 5 = 0
MAX9723C/
MAX9723D
Gain range bit 5 = 1
Gain range bit 5 = 0
Signal-to-Noise Ratio
Slew Rate
SNR
SR
RL = 32Ω,
VOUT = 1VRMS
BW = 22Hz to 22kHz
A-weighted
Capacitive Drive
No sustained oscillations
Output Resistance in Shutdown
ROUT_SHDN
VSHDN = 0V, measured from OUT_ to
SGND
Output Capacitance in Shutdown
COUT_SHDN
VSHDN = 0V, measured from OUT_ to
SGND
Click/Pop Level
Into
RL = 32Ω,
peak voltage,
MAX9723A/
MAX9723B
shutdown
Out of
KCP
A-weighted,
32 samples
shutdown
Into
per second
(Notes 2, 4)
MAX9723C/ shutdown
MAX9723D Out of
shutdown
Charge-Pump Switching
Frequency
fCP
Crosstalk
XTALK
L to ≥ or ≥ to L, f = 10kHz,
VOUT = 1VP-P, RL = 32Ω, both channels
loaded
DIGITAL INPUTS (SHDN, SDA, SCL)
Input High Voltage
VIH
Input Low Voltage
Input Leakage Current
DIGITAL OUTPUTS (SDA)
Output Low Voltage
Output High Current
VIL
VOL
IOL = 3mA
IOH
VSDA = VDD
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
60
pF
-69
-71
dB
-70
-69
505
600
700
kHz
80
dB
0.7 x
VDD
V
0.3 x
VDD
V
P1
µA
0.4
V
1
µA
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