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MAX9702 Datenblatt(Datasheet) 3 Page - Maxim Integrated Products

Teile-Nr. MAX9702
Beschreibung  1.8W, Filterless, Stereo, Class D Audio Power Amplifier and DirectDrive Stereo Headphone Amplifier
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Hersteller  MAXIM [Maxim Integrated Products]
Homepage  http://www.maxim-ic.com
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1.8W, Filterless, Stereo, Class D Audio Power
Amplifier and DirectDrive Stereo Headphone Amplifier
_______________________________________________________________________________________
3
ELECTRICAL CHARACTERISTICS (VDD = 3.3V) (continued)
(VDD = PVDD = CPVDD = SHDN = 3.3V, GND = PGND = CPGND = 0V, SYNC = VDD (SSM), speaker gain = +12dB, headphone gain
= +1dB. Speaker load RL connected between OUT+ and OUT-, unless otherwise noted, RL = ∞. Headphone load RLH connected
between HPR/HPL to GND. CBIAS = 1µF to GND, 1µF capacitor between C1P and C1N, CVSS = 1µF. TA = TMIN to TMAX, unless oth-
erwise noted. Typical values are at TA = +25°C.) (Notes 1, 2)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
RL = 8
470
Output Power
POUT
THD+N = 1%, TA = +25°C,
f = 1kHz, VDD = 3.3V
RL = 4
700
mW
RL = 8
Ω (POUT = 400mW), f = 1kHz
0.07
Total Harmonic Distortion Plus
Noise
THD+N
RL = 4
Ω (POUT = 600mW), f = 1kHz
0.13
%
FFM
86.5
BW = 22Hz
to 22kHz
SSM
87.5
FFM
91.5
Signal-to-Noise Ratio
SNR
VOUT =
2VRMS,
RL = 8
A-weighted
SSM
91.5
dB
SYNC = GND
1000
1100
1200
SYNC = float
1250
1340
1450
Oscillator Frequency
fS
SYNC = VDD
1150
±50
kHz
SYNC Frequency Lock Range
fSYNC
1000
2000
kHz
SYNC_OUT Capacitance Drive
CSYNC_OUT
100
pF
Into shutdown
56
Click-and-Pop Level
KCP
Peak voltage, 32
samples/second,
A-weighted (Note 3)
Out of shutdown
48
dB
Efficiency
η
POUT = 2 x 500mW, fIN = 1kHz, RL = 8
Ω,
L = 68µH
94
%
B2 = 0
B1 = 0
B0 = 0
0
B2 = 0
B1 = 0
B0 = 1
+3
B2 = 0
B1 = 1
B0 = 0
+6
B2 = 0
B1 = 1
B0 = 1
+9
B2 = 1
B1 = 0
B0 = 0
+12
B2 = 1
B1 = 0
B0 = 1
+15
B2 = 1
B1 = 1
B0 = 0
+18
Gain (see I
2C Section)
AV
B2 = 1
B1 = 1
B0 = 1
+21
dB
Channel-to-Channel Gain
Tracking
±0.2
%
Crosstalk
L to R, R to L, f = 10kHz, RL = 8
Ω,
POUT = 300mW
65
dB




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