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MAX97000 Datasheet(PDF) 7 Page - Maxim Integrated Products

Part No. MAX97000
Description  Audio Subsystem with Mono Class D Speaker and Class H Headphone Amplifier
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Maker  MAXIM [Maxim Integrated Products]
Homepage  http://www.maxim-ic.com
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MAX97000 Datasheet(HTML) 7 Page - Maxim Integrated Products

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Audio Subsystem with Mono Class D
Speaker and Class H Headphone Amplifier
7
ELECTRICAL CHARACTERISTICS (continued)
(VLDOIN = VPVDD = VSHDN = 3.7V, VGND = VPGND = 0V. Input signal applied at INA configured single-ended, preamp gain = 0dB,
HPLVOL = HPRVOL= SPKVOL = 0dB, speaker loads (ZSPK) connected between OUTP and OUTN. Headphone loads (RHP) con-
nected from HPL or HPR to GND. SDA and SCL pullup voltage = 1.8V. ZSPK = J, RHP = J. CC1P-C1N = CHPVDD = CHPVSS = CBIAS
= 1FF. TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25NC.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
CHARGE PUMP
Charge-Pump Frequency
VHPL = VHPR = 0V
80
83
85
kHz
VHPL = VHPR = 0.2V
665
VHPL = VHPR = 0.5V
500
Positive Output Voltage
VHPVDD
VHPL, VHPR > VTH
1.8
V
VHPL, VHPR < VTH
0.9
Negative Output Voltage
VHPVSS
VHPL, VHPR > VTH
-1.8
V
VHPL, VHPR < VTH
-0.9
Headphone Output Voltage
Threshold
VTH1
Output voltage at which the charge pump
switches between fast and slow clock
0.1
0.16
0.21
V
VTH2
Output voltage at which the charge pump
switches modes, VOUT rising or falling
0.40
0.46
0.52
Mode Transition Timeouts
Time it takes for the charge pump to
transition from invert to split mode
32
ms
Time it takes for the charge pump to
transition from split to invert mode
20
F
s
HEADPHONE AMPLIFIERS
Output Offset Voltage
VOS
TA = +25NC volume at mute
Q
0.15
Q
0.6
mV
TA = +25NC, HP_VOL = 0dB, HP_MIX = 0x1,
IN_DIFF = 0
Q
0.5
Click-and-Pop Level
KCP
Peak voltage, TA =
+25NC, A-weighted, 32
samples per second,
volume at mute
(Note 2)
Into shutdown
-74
dBV
Out of shutdown
-74
Power-Supply Rejection Ratio
PSRR
TA = +25NC (Note 2)
VLDOIN = 2.5V to 5.5V
70
85
dB
f = 217Hz,
VRIPPLE = 200mVP-P
84
f = 1kHz,
VRIPPLE = 200mVP-P
80
f = 20kHz,
VRIPPLE = 200mVP-P
62
Output Power
POUT
THD+N = 1%,
f = 1kHz
RHP = 16I
40
mW
RHP = 32I
23
RHP = 32I,
LPMODE = 1,
LP gain = 3dB
34
Channel-to-Channel Gain
Tracking
TA = +25NC, HPL to HPR, volume at
maximum, HPLMIX = 0x01, HPRMIX = 0x02,
IN_DIFF = 0
Q
0.3
Q
2.5
%


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