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MAX9702 Datenblatt(Datasheet) 4 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
4
_______________________________________________________________________________________
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
HEADPHONE AMPLIFIERS (HPS = VDD)
TA = +25°C
±1.8
±6
Output Offset Voltage
VOS
TMIN to TMAX
±8
mV
VDD = 2.5V to 5.5V
66
75
fRIPPLE = 217Hz
73
Power-Supply Rejection Ratio
(Note 4)
PSRR
100mVP-P ripple,
VIN = 0V, TA = +25°C
fRIPPLE = 20kHz
53
dB
RL = 32
48
Output Power
POUT
THD+N = 1%, VDD =
3.3V, TA = +25°C
RL = 16
47
mW
RL = 16
Ω (POUT = 40mW, f = 1kHz)
0.03
Total Harmonic Distortion Plus
Noise
THD+N
RL = 32
Ω (POUT = 32mW, f = 1kHz)
0.015
%
BW = 22Hz to 22kHz
95.5
Signal-to-Noise Ratio
SNR
VOUT = 1VRMS,
RL = 32
A-weighted
97.9
dB
Charge-Pump Frequency
fCP
fOSC/2
kHz
Into shutdown
65
Click-and-Pop Level
KCP
Peak voltage, 32
samples/second,
A-weighted (Note 3)
Out of shutdown
85
dB
Slew Rate
SR
±1V output step
0.3
V/µs
B4 = 0
B3 = 0
-2
B4 = 0
B3 = 1
+1
B4 = 1
B3 = 0
+4
Gain (see I
2C Section)
AV
B4 = 1
B3 = 1
+7
dB
Channel-to-Channel Gain
Tracking
±0.2
%
Capacitance Drive
CL
No sustained oscillations
300
pF
Crosstalk
L to R, R to L, f = 10kHz, RL = 16
Ω,
POUT = 10mW
70
dB
HP_ Resistance to GND
In speaker mode
1
k
DIGITAL INPUTS (
SHDN, SYNC, SDA, SCL, HPS)
Input Voltage High,
SHDN,
SYNC, HPS
VINH
2V
Input Voltage High, SCL
VINH
0.7 x
VDD
V
Input Voltage Low,
SHDN, SYNC,
HPS
VINL
0.8
V




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